summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/at.cpp
blob: 9b0d55be11d7951e44f9ecd6505d577d9941e729 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
// license:BSD-3-Clause
// copyright-holders:Wilbert Pol, Miodrag Milanovic
/***************************************************************************

    IBM AT Compatibles

Commodore PC 30-III and PC 40-III
=================================
Links: http://www.richardlagendijk.nl/cip/computer/item/pc30iii/en , ftp://ftp.zimmers.net/pub/cbm-pc/firmware/pc30/
Info: The PC 30-III and PC 40-III share the same mainboard. On a PC 30-III the onboard Paradise VGA is not populated.
Form factor: Desktop PC
CPU: Siemens SAB 80286-12 (PC 30-III), Intel 80286-12 (PC 40-III)
RAM: 1MB on board
Chipset: Faraday FE3020, MOS 5720 1788 41, Faraday FE3000, FE3010B, 
Bus: 3x16 bit ISA, 1x8 bit ISA
Video: PC 30-III: ATI EGA Wonder 800+, PC 40-III: Onboard Paradise VGA, 256KB
Mass storage: One HD disk drive standard, second drive optional; PC 30-III: 20MB, PC 40-III: 40MB AT-IDE HD standard, 80MB or 100MB optional
On board: Serial, Parallel, Commodore 1532 Mouse port (MS Bus mouse compatible), Keyboard, Beeper, Floppy (2 devices), AT-IDE (1 device)
Options: 80287

Sanyo MBC-28
============
Links: http://www.cc-computerarchiv.de/CC-Archiv/bc-alt/gb-san/gb-san-12_91.html
Form factor: Desktop
CPU: 80386sx-20
RAM: 1MB - 8MB on board
Mass storage: 1.44MB Floppy disk drive and 80MB IDE hard disk
On board: 2xserial, parallel, bus mouse, keyboard
To-Do: Complains about missing mouse hardware (Bus Mouse), hangs in POST

Siemens PCD-2
=============
Links: http://www.z80.eu/siemenspcd2.html , http://www.z80.eu/downloads/Siemens_PCD-2_SW-Monitor-Buchse-Belegung.pdf , https://www.computerwoche.de/a/at-klon-und-lan-ergaenzen-siemens-palette,1166395
Form factor: low profile desktop
CPU: 80286-12 on a Tandon supplied slot CPU card
RAM: 1MB - 4MB in four SIMM modules
Mass storage: 1.2MB Floppy disk drive and 20MB or 40MB MFM harddisk
Bus: Vertical passive ISA backplane with six slots
On board: 2xserial, parallel, floppy, keyboard, RTC, MFM harddisk controller piggybacked to bus extension on slot CPU
Options: 80287

Compaq Portable II
==================
Links: http://tkc8800.com/post/compaq-portable-ii-restoration , https://www.seasip.info/VintagePC/compaq2.html , https://en.wikipedia.org/wiki/Compaq_Portable_II
Form factor: Luggable
CPU: 80286-8
RAM: 256K or 640K on board, 512kB and 2048kB ISA memory cards and 512kB and 1536kB memory boards that attached to the back of the motherboard, 4.2M max.
Display: Green-screen CRT
Mass storage: one or two 5.25" floppy drives, 10MB or 20MB mfm harddisk connected via an MFM=>IDE bridgeboard
Bus: two 8bit and two 16bit ISA slots
On board: Serial, parallel
Standard cards: Floppy/IDE combo card, special Compaq CGA/MDA hybrid video card
Options: Compaq EGA card (drives internal monitor), 80287, floppy drives (360K, 1.2M, 1.44M)

Compaq Portable III
===================
Links: http://www.old-computers.com/museum/computer.asp?c=1064 , http://www.freakedenough.at/infoseiten/read.php?id=66 , http://www.1000bit.it/ad/bro/compaq/CompaqProtable3.pdf , http://oldcomputers.net/compaqiii.pdf
Info: The later Compaq Portable 386 uses the same case, screen and video adapter; Models: 1 (no), 20 (20MB) and 40 (40MB harddisk)
Form factor: Luggable
CPU: AMD N80L286-12/S 12MHz (could be downclocked to 8MHz)
RAM: 640KB, attitional RAM cards were 512KB or 2MB to give 1.1MB, 1.6MB, 2.1MB, 2.6MB, 4.6MB or 6.6MB of total RAM
Video: AT&T 6300/Olivetti M24 driver compatible "Super CGA" with a 640x400 red/amber Plasma screen
Mass storage: One 1.2MB floppy disk drive, no/20MB/40MB hard disk
On board: Serial, Parallel, RTC, RGBI (external Monitor), keyboard
Options: 80827, Expansion box with 2 ISA slots, 300/1200Baud internal Modem, Compaq EGA Board
To-Do: Emulate Graphics card fully

Ericsson/Nokia Data/ICL WS286
=============================
Links: http://oju.mbnet.fi/retro/EricssonPC_eng.html
Info: WS286 was introduced 1986 as first 8Mhz AT in the world a few weeks ahead competition, aquired by Nokia Data 1988 which in turn was aquired by ICL 1990
Form factor: Desktop PC
CPU: Intel 286, 8MHz
RAM: 640KB
Mass storage: Floppy: 5.25" 1.2Mb, HDD: 40Mb

Nixdorf 8810 M55
================
Links: https://www.computerwoche.de/a/auch-nixdorf-nun-in-der-at-clone-riege,1166613
Info: Rebadged NCR PC-8, an AT-clone in a huge desktop case
Form factor: Desktop PC
CPU: Intel 286; CPU card has a 20Mhz, a 12 MHz and a 14.31818 crystal
RAM: 512K on CPU card, 128K on a piggyback card and a memory expansion board
Bus: Passive backplane, ISA
Video: Paradise EGA on another piggyback board
Mass storage: Floppy: 5.25" 1.2MB, MFM HDD

Lion 3500C/T
==========
Info: BIOS saved according to http://mess.redump.net/dumping/dump_bios_using_debug from a 3560C machine
Form factor: notebook
CPU: Intel 486DX2-66
RAM: 2MB, 4MB, 8MB or 16MB
Chipset: ETEQ ET/486H (ET82C491 & ET82C492), 82C206, 82C712
ROM: 128K Video (E0000-EFFFF) & BIOS ROM  (F0000-FFFFF)
Video: Cirrus Logic GD-6420BF/6430 6342 internal VGA, 640x480 256 color display
Mass storage: Floppy 3.5" 1.44MB, 3.5" HDD, 120MB
Input: Trackball connected as a PS/2 mouse
Options: 100 pin expansion port for 3305 Docking station (2xISA16 slots), external keypad
Ports: External VGA, external keyboard, COM1, external keypad, COM2, LPT1, buzzer
Variants: T denotes an active 8.4" display, C a passive 9.5" color display. 3560T/C (486DX2-66), 3530T/C(486DX2-50), 3500T/C (486DX-33), 3500SXT/SXC(486SX-25)

***************************************************************************/

#include "emu.h"

/* mingw-gcc defines this */
#ifdef i386
#undef i386
#endif /* i386 */

#include "bus/isa/isa_cards.h"
#include "bus/lpci/pci.h"
#include "bus/lpci/vt82c505.h"
#include "bus/pc_kbd/keyboards.h"
#include "cpu/i386/i386.h"
#include "cpu/i86/i286.h"
#include "machine/at.h"
#include "machine/cs8221.h"
#include "machine/ds128x.h"
#include "machine/idectrl.h"
#include "machine/nvram.h"
#include "machine/ram.h"
#include "machine/vt82c496.h"
#include "machine/wd7600.h"
#include "emupal.h"
#include "softlist_dev.h"
#include "speaker.h"

class at_state : public driver_device
{
public:
	at_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_mb(*this, "mb"),
		m_ram(*this, RAM_TAG)
	{ }

	void pc30iii(machine_config &config);
	void k286i(machine_config &config);
	void ibm5170(machine_config &config);
	void ct386sx(machine_config &config);
	void xb42639(machine_config &config);
	void at486l(machine_config &config);
	void comportii(machine_config &config);
	void comportiii(machine_config &config);
	void comslt286(machine_config &config);
	void dsys200(machine_config &config);
	void ibm5162(machine_config &config);
	void neat(machine_config &config);
	void at386l(machine_config &config);
	void ibm5170a(machine_config &config);
	void ec1842(machine_config &config);
	void at486(machine_config &config);
	void ficpio2(machine_config &config);
	void at386sx(machine_config &config);
	void pc40iii(machine_config &config);
	void pc45iii(machine_config &config);
	void c286lt(machine_config &config);
	void csl286(machine_config &config);
	void c386sx16(machine_config &config);
	void atvga(machine_config &config);
	void at386(machine_config &config);
	void m290(machine_config &config);
	void ncrpc8(machine_config &config);
	void n8810m15(machine_config &config);
	void n8810m55(machine_config &config);
	void ews286(machine_config &config);

	void init_at();
	void init_atpci();

protected:
	required_device<cpu_device> m_maincpu;
	required_device<at_mb_device> m_mb;
	required_device<ram_device> m_ram;
	DECLARE_READ16_MEMBER(ps1_unk_r);
	DECLARE_WRITE16_MEMBER(ps1_unk_w);
	DECLARE_READ8_MEMBER(ps1_portb_r);

	void init_at_common(int xmsbase);
	uint16_t m_ps1_reg[2];

	static void cfg_single_360K(device_t *device);
	static void cfg_single_1200K(device_t *device);
	void at16_io(address_map &map);
	void at16_map(address_map &map);
	void at16l_map(address_map &map);
	void at32_io(address_map &map);
	void at32_map(address_map &map);
	void at32l_map(address_map &map);
	void ficpio_io(address_map &map);
	void ficpio_map(address_map &map);
	void neat_io(address_map &map);
	void ps1_16_io(address_map &map);
};

class at_vrom_fix_state : public at_state
{
public:
	using at_state::at_state;

	void init_megapcpla();

	void ibmps1(machine_config &config);
	void megapcpla(machine_config &config);

protected:
	virtual void machine_start() override;
};

class megapc_state : public driver_device
{
public:
	megapc_state(const machine_config &mconfig, device_type type, const char *tag) :
		driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_ram(*this, RAM_TAG),
		m_wd7600(*this, "wd7600"),
		m_isabus(*this, "isabus"),
		m_speaker(*this, "speaker")
	{ }

	void megapcpl(machine_config &config);
	void megapc(machine_config &config);

	void init_megapc();
	void init_megapcpl();

private:
	required_device<cpu_device> m_maincpu;
	required_device<ram_device> m_ram;
	required_device<wd7600_device> m_wd7600;
	required_device<isa16_device> m_isabus;
	required_device<speaker_sound_device> m_speaker;

	DECLARE_READ16_MEMBER( wd7600_ior );
	DECLARE_WRITE16_MEMBER( wd7600_iow );
	DECLARE_WRITE_LINE_MEMBER( wd7600_hold );
	DECLARE_WRITE8_MEMBER( wd7600_tc ) { m_isabus->eop_w(offset, data); }
	DECLARE_WRITE_LINE_MEMBER( wd7600_spkr ) { m_speaker->level_w(state); }
	void megapc_io(address_map &map);
	void megapc_map(address_map &map);
	void megapcpl_io(address_map &map);
	void megapcpl_map(address_map &map);
};


void at_state::at16_map(address_map &map)
{
	map.unmap_value_high();
	map(0x000000, 0x09ffff).bankrw("bank10");
	map(0x0e0000, 0x0fffff).rom().region("bios", 0);
	map(0xfe0000, 0xffffff).rom().region("bios", 0);
}

void at_state::at16l_map(address_map &map)
{
	map.unmap_value_high();
	map(0x000000, 0x09ffff).bankrw("bank10");
	map(0x0e0000, 0x0fffff).rom().region("bios", 0x20000);
	map(0xfe0000, 0xffffff).rom().region("bios", 0x20000);
}

void at_state::at32_map(address_map &map)
{
	map.unmap_value_high();
	map(0x00000000, 0x0009ffff).bankrw("bank10");
	map(0x000e0000, 0x000fffff).rom().region("bios", 0);
	map(0x00800000, 0x00800bff).ram().share("nvram");
	map(0xfffe0000, 0xffffffff).rom().region("bios", 0);
}

void at_state::at32l_map(address_map &map)
{
	map.unmap_value_high();
	map(0x00000000, 0x0009ffff).bankrw("bank10");
	map(0x000e0000, 0x000fffff).rom().region("bios", 0x20000);
	map(0x00800000, 0x00800bff).ram().share("nvram");
	map(0xfffe0000, 0xffffffff).rom().region("bios", 0x20000);
}

void at_state::ficpio_map(address_map &map)
{
	map.unmap_value_high();
	map(0x00000000, 0x0009ffff).bankrw("bank10");
	map(0x00800000, 0x00800bff).ram().share("nvram");
	map(0xfffe0000, 0xffffffff).rom().region("isa", 0x20000);
}

void at_state::at16_io(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x00ff).m(m_mb, FUNC(at_mb_device::map));
}

READ16_MEMBER( at_state::ps1_unk_r )
{
	return m_ps1_reg[offset];
}

WRITE16_MEMBER( at_state::ps1_unk_w )
{
	if((offset == 0) && (data == 0x60))
		data = 0x68;

	COMBINE_DATA(&m_ps1_reg[offset]);
}

READ8_MEMBER( at_state::ps1_portb_r )
{
	uint8_t data = m_mb->portb_r(space, offset);
	/* 0x10 is the dram refresh line bit, 15.085us. */
	data = (data & ~0x10) | ((machine().time().as_ticks(66291) & 1) ? 0x10 : 0);

	return data;
}

void at_state::ps1_16_io(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x00ff).m(m_mb, FUNC(at_mb_device::map));
	map(0x0061, 0x0061).r(FUNC(at_state::ps1_portb_r));
	map(0x0102, 0x0105).rw(FUNC(at_state::ps1_unk_r), FUNC(at_state::ps1_unk_w));
}

void at_state::neat_io(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x00ff).m(m_mb, FUNC(at_mb_device::map));
	map(0x0022, 0x0023).m("cs8221", FUNC(cs8221_device::map));
}

void at_state::at32_io(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x00ff).m(m_mb, FUNC(at_mb_device::map));
}

void at_state::ficpio_io(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x00ff).m(m_mb, FUNC(at_mb_device::map));
	map(0x00a8, 0x00af).rw("chipset", FUNC(vt82c496_device::read), FUNC(vt82c496_device::write));
	map(0x0170, 0x0177).rw("ide2", FUNC(ide_controller_32_device::cs0_r), FUNC(ide_controller_32_device::cs0_w));
	map(0x01f0, 0x01f7).rw("ide", FUNC(ide_controller_32_device::cs0_r), FUNC(ide_controller_32_device::cs0_w));
	map(0x0370, 0x0377).rw("ide2", FUNC(ide_controller_32_device::cs1_r), FUNC(ide_controller_32_device::cs1_w));
	map(0x03f0, 0x03f7).rw("ide", FUNC(ide_controller_32_device::cs1_r), FUNC(ide_controller_32_device::cs1_w));
	map(0x0cf8, 0x0cff).rw("pcibus", FUNC(pci_bus_device::read), FUNC(pci_bus_device::write));
}

void megapc_state::init_megapc()
{
	uint8_t* ROM = memregion("bios")->base();
	ROM[0x19145] = 0x45;  // hack to fix keyboard.  To be removed when the keyboard controller from the MegaPC is dumped
	ROM[0x1fea0] = 0x20;  // to correct checksum
}

void megapc_state::init_megapcpl()
{
	uint8_t* ROM = memregion("bios")->base();
	ROM[0x187b1] = 0x55;  // hack to fix keyboard.  To be removed when the keyboard controller from the MegaPC is dumped
	ROM[0x1fea0] = 0x20;  // to correct checksum
}

void at_vrom_fix_state::init_megapcpla()
{
	uint8_t* ROM = memregion("bios")->base();

	init_at_common(0xa0000);

	ROM[0x33c2a] = 0x45;  // hack to fix keyboard.  To be removed when the keyboard controller from the MegaPC is dumped
	ROM[0x3af37] = 0x45;
	ROM[0x3cf1b] = 0x54;  // this will allow the keyboard to work during the POST memory test
	ROM[0x3fffe] = 0x1c;
	ROM[0x3ffff] = 0x41;  // to correct checksum
}

READ16_MEMBER( megapc_state::wd7600_ior )
{
	if (offset < 4)
		return m_isabus->dack_r(offset);
	else
		return m_isabus->dack16_r(offset);
}

WRITE16_MEMBER( megapc_state::wd7600_iow )
{
	if (offset < 4)
		m_isabus->dack_w(offset, data);
	else
		m_isabus->dack16_w(offset, data);
}

WRITE_LINE_MEMBER( megapc_state::wd7600_hold )
{
	// halt cpu
	m_maincpu->set_input_line(INPUT_LINE_HALT, state ? ASSERT_LINE : CLEAR_LINE);

	// and acknowledge hold
	m_wd7600->hlda_w(state);
}

void megapc_state::megapc_map(address_map &map)
{
}

void megapc_state::megapcpl_map(address_map &map)
{
}

void megapc_state::megapc_io(address_map &map)
{
	map.unmap_value_high();
}

void megapc_state::megapcpl_io(address_map &map)
{
	map.unmap_value_high();
}

/**********************************************************
 *
 * Init functions
 *
 **********************************************************/

void at_state::init_at_common(int xmsbase)
{
	address_space& space = m_maincpu->space(AS_PROGRAM);

	/* MESS managed RAM */
	membank("bank10")->set_base(m_ram->pointer());

	if (m_ram->size() > xmsbase)
	{
		offs_t ram_limit = 0x100000 + m_ram->size() - xmsbase;
		space.install_read_bank(0x100000,  ram_limit - 1, "bank1");
		space.install_write_bank(0x100000,  ram_limit - 1, "bank1");
		membank("bank1")->set_base(m_ram->pointer() + xmsbase);
	}
}

void at_state::init_at()
{
	init_at_common(0xa0000);
}

void at_state::init_atpci()
{
	init_at_common(0x100000);
}

void at_vrom_fix_state::machine_start()
{
	at_state::machine_start();

	address_space& space = m_maincpu->space(AS_PROGRAM);
	space.install_read_bank(0xc0000, 0xcffff, "vrom_bank");
	membank("vrom_bank")->set_base(machine().root_device().memregion("bios")->base());
}

void at_state::cfg_single_1200K(device_t *device)
{
	dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:0")).set_default_option("525hd");
	dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:1")).set_default_option("");
}

void at_state::cfg_single_360K(device_t *device)
{
	dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:0")).set_default_option("525dd");
	dynamic_cast<device_slot_interface &>(*device->subdevice("fdc:1")).set_default_option("");
}

static void pci_devices(device_slot_interface &device)
{
	device.option_add_internal("vt82c505", VT82C505);
}

void at_state::ibm5170(machine_config &config)
{
	/* basic machine hardware */
	i80286_cpu_device &maincpu(I80286(config, m_maincpu, 12_MHz_XTAL / 2 /*6000000*/));
	maincpu.set_addrmap(AS_PROGRAM, &at_state::at16_map);
	maincpu.set_addrmap(AS_IO, &at_state::at16_io);
	maincpu.set_irq_acknowledge_callback("mb:pic8259_master", FUNC(pic8259_device::inta_cb));
	maincpu.shutdown_callback().set("mb", FUNC(at_mb_device::shutdown));

	AT_MB(config, m_mb, 0);
	config.m_minimum_quantum = attotime::from_hz(60);

	m_mb->at_softlists(config);

	// FIXME: determine ISA bus clock
	ISA16_SLOT(config, "isa1", 0, "mb:isabus", pc_isa16_cards, "ega", false);
	ISA16_SLOT(config, "isa2", 0, "mb:isabus", pc_isa16_cards, "fdc", false);
	ISA16_SLOT(config, "isa3", 0, "mb:isabus", pc_isa16_cards, "comat", false);
	ISA16_SLOT(config, "isa4", 0, "mb:isabus", pc_isa16_cards, "ide", false);
	PC_KBDC_SLOT(config, "kbd", pc_at_keyboards, STR_KBD_IBM_PC_AT_84).set_pc_kbdc_slot(subdevice("mb:pc_kbdc"));

	/* internal ram */
	RAM(config, m_ram).set_default_size("1664K").set_extra_options("640K,1024K,2M,4M,8M,15M");
}

void at_state::ibm5170a(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(16_MHz_XTAL / 2);
}

void at_state::ews286(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(16_MHz_XTAL / 2); // Exact crystal needs to be verified, 8 MHz according to specification

	subdevice<isa16_slot_device>("isa2")->set_option_machine_config("fdc", cfg_single_1200K); // From pictures but also with a 3.5" as second floppy

	SOFTWARE_LIST(config, "ews286_disk_list").set_original("ews286_flop");

	m_ram->set_default_size("640K");
}

void at_state::ec1842(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(12000000);
}

void at_state::ibm5162(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(6000000);
	subdevice<isa16_slot_device>("isa1")->set_default_option("cga");
}

void at_vrom_fix_state::ibmps1(machine_config &config)
{
	ibm5170(config);

	m_maincpu->set_clock(10_MHz_XTAL);
	m_maincpu->set_addrmap(AS_PROGRAM, &at_vrom_fix_state::at16l_map);
	m_maincpu->set_addrmap(AS_IO, &at_vrom_fix_state::ps1_16_io);

	subdevice<isa16_slot_device>("isa1")->set_default_option("vga");
	subdevice<isa16_slot_device>("isa1")->set_fixed(true);
	subdevice<pc_kbdc_slot_device>("kbd")->set_default_option(STR_KBD_MICROSOFT_NATURAL);
}

void at_state::atvga(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(12000000);
	subdevice<isa16_slot_device>("isa1")->set_default_option("svga_et4k");
	subdevice<pc_kbdc_slot_device>("kbd")->set_default_option(STR_KBD_MICROSOFT_NATURAL);
	ISA16_SLOT(config, "isa5", 0, "mb:isabus", pc_isa16_cards, nullptr, false); // FIXME: determine ISA bus clock
}

void at_state::neat(machine_config &config)
{
	atvga(config);
	m_maincpu->set_addrmap(AS_IO, &at_state::neat_io);

	ds12885_device &rtc(DS12885(config.replace(), "mb:rtc")); // TODO: move this into the cs8221
	rtc.irq().set("mb:pic8259_slave", FUNC(pic8259_device::ir0_w)); // this is in :mb
	rtc.set_century_index(0x32);

	CS8221(config, "cs8221", 0, "maincpu", "mb:isa", "bios");
}

void at_state::xb42639(machine_config &config)
{
	atvga(config);
	m_maincpu->set_clock(12500000);
}

void at_state::k286i(machine_config &config)
{
	ibm5162(config);
	subdevice<pc_kbdc_slot_device>("kbd")->set_default_option(STR_KBD_MICROSOFT_NATURAL);
	ISA16_SLOT(config, "isa5", 0, "mb:isabus", pc_isa16_cards, nullptr, false); // FIXME: determine ISA bus clock
	ISA16_SLOT(config, "isa6", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa7", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa8", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
}

void at_state::at386(machine_config &config)
{
	i386_device &maincpu(I386(config, m_maincpu, 12000000));
	maincpu.set_addrmap(AS_PROGRAM, &at_state::at32_map);
	maincpu.set_addrmap(AS_IO, &at_state::at32_io);
	maincpu.set_irq_acknowledge_callback("mb:pic8259_master", FUNC(pic8259_device::inta_cb));

	AT_MB(config, m_mb, 0).at_softlists(config);

	config.m_minimum_quantum = attotime::from_hz(60);

	NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);

	// on-board devices
	ISA16_SLOT(config, "board1", 0, "mb:isabus", pc_isa16_cards, "fdcsmc", true); // FIXME: deteremine ISA bus clock
	ISA16_SLOT(config, "board2", 0, "mb:isabus", pc_isa16_cards, "comat", true);
	ISA16_SLOT(config, "board3", 0, "mb:isabus", pc_isa16_cards, "ide", true);
	ISA16_SLOT(config, "board4", 0, "mb:isabus", pc_isa16_cards, "lpt", true);
	// ISA cards
	ISA16_SLOT(config, "isa1", 0, "mb:isabus", pc_isa16_cards, "svga_et4k", false);
	ISA16_SLOT(config, "isa2", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa3", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa4", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa5", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	PC_KBDC_SLOT(config, "kbd", pc_at_keyboards, STR_KBD_MICROSOFT_NATURAL).set_pc_kbdc_slot(subdevice("mb:pc_kbdc"));

	/* internal ram */
	RAM(config, m_ram).set_default_size("1664K").set_extra_options("2M,4M,8M,15M,16M,32M,64M");
}

void at_state::at386l(machine_config &config)
{
	at386(config);
	m_maincpu->set_addrmap(AS_PROGRAM, &at_state::at32l_map);
}

void at_state::at486(machine_config &config)
{
	at386(config);
	i486_device &maincpu(I486(config.replace(), m_maincpu, 25000000));
	maincpu.set_addrmap(AS_PROGRAM, &at_state::at32_map);
	maincpu.set_addrmap(AS_IO, &at_state::at32_io);
	maincpu.set_irq_acknowledge_callback("mb:pic8259_master", FUNC(pic8259_device::inta_cb));
}

void at_state::at486l(machine_config &config)
{
	at486(config);
	m_maincpu->set_addrmap(AS_PROGRAM, &at_state::at32l_map);
}

void at_state::at386sx(machine_config &config)
{
	atvga(config);
	i386sx_device &maincpu(I386SX(config.replace(), m_maincpu, 16000000)); /* 386SX */
	maincpu.set_addrmap(AS_PROGRAM, &at_state::at16_map);
	maincpu.set_addrmap(AS_IO, &at_state::at16_io);
	maincpu.set_irq_acknowledge_callback("mb:pic8259_master", FUNC(pic8259_device::inta_cb));
}

void at_state::ct386sx(machine_config &config)
{
	at386sx(config);
	m_maincpu->set_addrmap(AS_IO, &at_state::neat_io);
	CS8221(config, "cs8221", 0, "maincpu", "mb:isa", "maincpu");
}

// Commodore PC 30-III
void at_state::pc30iii(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(6000000); // should be 24_MHz_XTAL / 2, but doesn't post with that setting
	subdevice<isa16_slot_device>("isa1")->set_default_option("vga"); // should be ATI EGA Wonder 800+
}

// Commodore PC 40-III
void at_state::pc40iii(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(6000000); // should be 24_MHz_XTAL / 2, but doesn't post with that setting
	subdevice<isa16_slot_device>("isa1")->set_default_option("vga"); // should be onboard Paradise VGA, see ROM declarations
}

void megapc_state::megapc(machine_config &config)
{
	i386sx_device &maincpu(I386SX(config, m_maincpu, 50_MHz_XTAL / 2));
	maincpu.set_addrmap(AS_PROGRAM, &megapc_state::megapc_map);
	maincpu.set_addrmap(AS_IO, &megapc_state::megapc_io);
	maincpu.set_irq_acknowledge_callback("wd7600", FUNC(wd7600_device::intack_cb));

	WD7600(config, m_wd7600, 50_MHz_XTAL / 2);
	m_wd7600->set_cputag(m_maincpu);
	m_wd7600->set_isatag("isa");
	m_wd7600->set_ramtag(m_ram);
	m_wd7600->set_biostag("bios");
	m_wd7600->set_keybctag("keybc");
	m_wd7600->hold_callback().set(FUNC(megapc_state::wd7600_hold));
	m_wd7600->nmi_callback().set_inputline(m_maincpu, INPUT_LINE_NMI);
	m_wd7600->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
	m_wd7600->cpureset_callback().set_inputline(m_maincpu, INPUT_LINE_RESET);
	m_wd7600->a20m_callback().set_inputline(m_maincpu, INPUT_LINE_A20);
	// isa dma
	m_wd7600->ior_callback().set(FUNC(megapc_state::wd7600_ior));
	m_wd7600->iow_callback().set(FUNC(megapc_state::wd7600_iow));
	m_wd7600->tc_callback().set(FUNC(megapc_state::wd7600_tc));
	// speaker
	m_wd7600->spkr_callback().set(FUNC(megapc_state::wd7600_spkr));

	// on board devices
	ISA16(config, m_isabus, 0);
	m_isabus->set_memspace(m_maincpu, AS_PROGRAM);
	m_isabus->set_iospace(m_maincpu, AS_IO);
	m_isabus->iochck_callback().set(m_wd7600, FUNC(wd7600_device::iochck_w));
	m_isabus->irq2_callback().set(m_wd7600, FUNC(wd7600_device::irq09_w));
	m_isabus->irq3_callback().set(m_wd7600, FUNC(wd7600_device::irq03_w));
	m_isabus->irq4_callback().set(m_wd7600, FUNC(wd7600_device::irq04_w));
	m_isabus->irq5_callback().set(m_wd7600, FUNC(wd7600_device::irq05_w));
	m_isabus->irq6_callback().set(m_wd7600, FUNC(wd7600_device::irq06_w));
	m_isabus->irq7_callback().set(m_wd7600, FUNC(wd7600_device::irq07_w));
	m_isabus->irq10_callback().set(m_wd7600, FUNC(wd7600_device::irq10_w));
	m_isabus->irq11_callback().set(m_wd7600, FUNC(wd7600_device::irq11_w));
	m_isabus->irq12_callback().set(m_wd7600, FUNC(wd7600_device::irq12_w));
	m_isabus->irq14_callback().set(m_wd7600, FUNC(wd7600_device::irq14_w));
	m_isabus->irq15_callback().set(m_wd7600, FUNC(wd7600_device::irq15_w));
	m_isabus->drq0_callback().set(m_wd7600, FUNC(wd7600_device::dreq0_w));
	m_isabus->drq1_callback().set(m_wd7600, FUNC(wd7600_device::dreq1_w));
	m_isabus->drq2_callback().set(m_wd7600, FUNC(wd7600_device::dreq2_w));
	m_isabus->drq3_callback().set(m_wd7600, FUNC(wd7600_device::dreq3_w));
	m_isabus->drq5_callback().set(m_wd7600, FUNC(wd7600_device::dreq5_w));
	m_isabus->drq6_callback().set(m_wd7600, FUNC(wd7600_device::dreq6_w));
	m_isabus->drq7_callback().set(m_wd7600, FUNC(wd7600_device::dreq7_w));

	ISA16_SLOT(config, "board1", 0, "isabus", pc_isa16_cards, "fdcsmc", true); // FIXME: determine ISA bus clock
	ISA16_SLOT(config, "board2", 0, "isabus", pc_isa16_cards, "comat", true);
	ISA16_SLOT(config, "board3", 0, "isabus", pc_isa16_cards, "ide", true);
	ISA16_SLOT(config, "board4", 0, "isabus", pc_isa16_cards, "lpt", true);
	ISA16_SLOT(config, "board5", 0, "isabus", pc_isa16_cards, "vga", true);
	// ISA cards
	ISA16_SLOT(config, "isa1", 0, "isabus", pc_isa16_cards, nullptr, false);

	at_keyboard_controller_device &keybc(AT_KEYBOARD_CONTROLLER(config, "keybc", 12_MHz_XTAL));
	keybc.hot_res().set("wd7600", FUNC(wd7600_device::kbrst_w));
	keybc.gate_a20().set("wd7600", FUNC(wd7600_device::gatea20_w));
	keybc.kbd_irq().set("wd7600", FUNC(wd7600_device::irq01_w));
	keybc.kbd_clk().set("pc_kbdc", FUNC(pc_kbdc_device::clock_write_from_mb));
	keybc.kbd_data().set("pc_kbdc", FUNC(pc_kbdc_device::data_write_from_mb));

	pc_kbdc_device &pc_kbdc(PC_KBDC(config, "pc_kbdc", 0));
	pc_kbdc.out_clock_cb().set("keybc", FUNC(at_keyboard_controller_device::kbd_clk_w));
	pc_kbdc.out_data_cb().set("keybc", FUNC(at_keyboard_controller_device::kbd_data_w));
	PC_KBDC_SLOT(config, "kbd", pc_at_keyboards, STR_KBD_MICROSOFT_NATURAL).set_pc_kbdc_slot(subdevice("pc_kbdc"));

	/* internal ram */
	RAM(config, m_ram).set_default_size("4M").set_extra_options("1M,2M,8M,15M,16M");

	// sound hardware
	SPEAKER(config, "mono").front_center();
	SPEAKER_SOUND(config, "speaker").add_route(ALL_OUTPUTS, "mono", 0.50);

	// video hardware
	PALETTE(config, "palette").set_entries(256); // todo: really needed?

	/* software lists */
	SOFTWARE_LIST(config, "disk_list").set_original("megapc");
}

void megapc_state::megapcpl(machine_config &config)
{
	megapc(config);
	i486_device &maincpu(I486(config.replace(), m_maincpu, 66000000 / 2));
	maincpu.set_addrmap(AS_PROGRAM, &megapc_state::megapcpl_map);
	maincpu.set_addrmap(AS_IO, &megapc_state::megapcpl_io);
	maincpu.set_irq_acknowledge_callback("wd7600", FUNC(wd7600_device::intack_cb));
}

void at_vrom_fix_state::megapcpla(machine_config &config)
{
	i486_device &maincpu(I486(config, m_maincpu, 66000000 / 2));  // 486SLC
	maincpu.set_addrmap(AS_PROGRAM, &at_vrom_fix_state::at32l_map);
	maincpu.set_addrmap(AS_IO, &at_vrom_fix_state::at32_io);
	maincpu.set_irq_acknowledge_callback("mb:pic8259_master", FUNC(pic8259_device::inta_cb));

	AT_MB(config, m_mb, 0).at_softlists(config);

	config.m_minimum_quantum = attotime::from_hz(60);

	NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);

	// on board devices
	ISA16_SLOT(config, "board1", 0, "mb:isabus", pc_isa16_cards, "fdcsmc", true); // FIXME: determine ISA bus clock
	ISA16_SLOT(config, "board2", 0, "mb:isabus", pc_isa16_cards, "comat", true);
	ISA16_SLOT(config, "board3", 0, "mb:isabus", pc_isa16_cards, "ide", true);
	ISA16_SLOT(config, "board4", 0, "mb:isabus", pc_isa16_cards, "lpt", true);
	// ISA cards
	ISA16_SLOT(config, "isa1", 0, "mb:isabus", pc_isa16_cards, "svga_dm", false);  // closest to the CL-GD5420
	ISA16_SLOT(config, "isa2", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa3", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa4", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa5", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	PC_KBDC_SLOT(config, "kbd", pc_at_keyboards, STR_KBD_MICROSOFT_NATURAL).set_pc_kbdc_slot(subdevice("mb:pc_kbdc"));

	/* internal ram */
	RAM(config, m_ram).set_default_size("4M").set_extra_options("2M,8M,15M,16M,32M,64M,128M,256M");

	/* software lists */
	SOFTWARE_LIST(config, "disk_list").set_original("megapc");
}

void at_state::ficpio2(machine_config &config)
{
	i486_device &maincpu(I486(config, m_maincpu, 25000000));
	maincpu.set_addrmap(AS_PROGRAM, &at_state::ficpio_map);
	maincpu.set_addrmap(AS_IO, &at_state::ficpio_io);
	maincpu.set_irq_acknowledge_callback("mb:pic8259_master", FUNC(pic8259_device::inta_cb));

	AT_MB(config, m_mb, 0).at_softlists(config);
	config.m_minimum_quantum = attotime::from_hz(60);

	ds12885_device &rtc(DS12885(config.replace(), "mb:rtc"));
	rtc.irq().set("mb:pic8259_slave", FUNC(pic8259_device::ir0_w)); // this is in :mb
	rtc.set_century_index(0x32);

	RAM(config, m_ram).set_default_size("4M").set_extra_options("1M,2M,8M,16M,32M,64M,128M");

	// on board devices
	ISA16_SLOT(config, "board1", 0, "mb:isabus", pc_isa16_cards, "fdcsmc", true); // FIXME: determine ISA bus clock
	ISA16_SLOT(config, "board2", 0, "mb:isabus", pc_isa16_cards, "comat", true);
	ISA16_SLOT(config, "board3", 0, "mb:isabus", pc_isa16_cards, "lpt", true);

	ide_controller_32_device &ide(IDE_CONTROLLER_32(config, "ide").options(ata_devices, "hdd", nullptr, true));
	ide.irq_handler().set("mb:pic8259_slave", FUNC(pic8259_device::ir6_w));
	ide_controller_32_device &ide2(IDE_CONTROLLER_32(config, "ide2").options(ata_devices, "cdrom", nullptr, true));
	ide2.irq_handler().set("mb:pic8259_slave", FUNC(pic8259_device::ir7_w));

	PCI_BUS(config, "pcibus", 0).set_busnum(0);
	PCI_CONNECTOR(config, "pcibus:0", pci_devices, "vt82c505", true);
	ISA16_SLOT(config, "isa1", 0, "mb:isabus", pc_isa16_cards, "svga_et4k", false);
	ISA16_SLOT(config, "isa2", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa3", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa4", 0, "mb:isabus", pc_isa16_cards, nullptr, false);
	PC_KBDC_SLOT(config, "kbd", pc_at_keyboards, STR_KBD_MICROSOFT_NATURAL).set_pc_kbdc_slot(subdevice("mb:pc_kbdc"));

	vt82c496_device &chipset(VT82C496(config, "chipset"));
	chipset.set_cputag(m_maincpu);
	chipset.set_ramtag(m_ram);
	chipset.set_isatag("isa");
}

// Compaq Portable III
void at_state::comportiii(machine_config &config)
{
	/* basic machine hardware */
	i80286_cpu_device &maincpu(I80286(config, m_maincpu, 48_MHz_XTAL / 4 /*12000000*/));
	maincpu.set_addrmap(AS_PROGRAM, &at_state::at16_map);
	maincpu.set_addrmap(AS_IO, &at_state::at16_io);
	maincpu.set_irq_acknowledge_callback("mb:pic8259_master", FUNC(pic8259_device::inta_cb));
	maincpu.shutdown_callback().set("mb", FUNC(at_mb_device::shutdown));

	AT_MB(config, m_mb, 0).at_softlists(config);
	config.m_minimum_quantum = attotime::from_hz(60);

	// FIXME: determine ISA bus clock
	ISA16_SLOT(config, "board1", 0, "mb:isabus", pc_isa16_cards, "fdc", true).set_option_machine_config("fdc", cfg_single_1200K);
	ISA16_SLOT(config, "board2", 0, "mb:isabus", pc_isa16_cards, "comat", true);
	ISA16_SLOT(config, "board3", 0, "mb:isabus", pc_isa16_cards, "hdc", true);
	ISA16_SLOT(config, "board4", 0, "mb:isabus", pc_isa16_cards, "cga_cportiii", true);
	ISA16_SLOT(config, "isa1",   0, "mb:isabus", pc_isa16_cards, nullptr, false);
	ISA16_SLOT(config, "isa2",   0, "mb:isabus", pc_isa16_cards, nullptr, false);

	PC_KBDC_SLOT(config, "kbd", pc_at_keyboards, STR_KBD_IBM_PC_AT_84).set_pc_kbdc_slot(subdevice("mb:pc_kbdc"));

	/* internal ram */
	RAM(config, m_ram).set_default_size("640K").set_extra_options("1152K,1664K,2176K,2688K,4736K,6784K");
}

void at_state::comportii(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(48_MHz_XTAL / 6);

	subdevice<isa16_slot_device>("isa2")->set_option_machine_config("fdc", cfg_single_360K);
	subdevice<isa16_slot_device>("isa4")->set_default_option("hdc");
	m_ram->set_default_size("640K").set_extra_options("1152K,1664K,2176K,2688K,4224K");
}

// Nixdorf 8810 M55
void at_state::n8810m15(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(6000000);
	subdevice<isa16_slot_device>("isa1")->set_default_option("cga");
}

// Nixdorf 8810 M55
void at_state::n8810m55(machine_config &config)
{
	ibm5170(config);
	m_maincpu->set_clock(6000000);
	subdevice<isa16_slot_device>("isa1")->set_default_option("ega");
}

//**************************************************************************
//  ROM DEFINITIONS
//**************************************************************************

//**************************************************************************
//  IBM systems
//**************************************************************************
ROM_START( ibm5170 )
	ROM_REGION(0x20000,"bios", 0) // - IBM 5170, 6 Mhz, one wait state RAM or 8 Mhz, one wait state RAM

	ROM_SYSTEM_BIOS( 0, "rev1", "IBM PC/AT 5170 01/10/84")
	ROMX_LOAD( "6181028.u27", 0x10000, 0x8000, CRC(f6573f2a) SHA1(3e52cfa6a6a62b4e8576f4fe076c858c220e6c1a), ROM_SKIP(1) | ROM_BIOS(0)) /* T 6181028 8506AAA // TMM23256P-5878 // (C)IBM CORP 1981,-1984 */
	ROMX_LOAD( "6181029.u47", 0x10001, 0x8000, CRC(7075fbb2) SHA1(a7b885cfd38710c9bc509da1e3ba9b543a2760be), ROM_SKIP(1) | ROM_BIOS(0)) /* T 6181029 8506AAA // TMM23256P-5879 // (C)IBM CORP 1981,-1984 */

	ROM_SYSTEM_BIOS( 1, "rev2", "IBM PC/AT 5170 06/10/85")  /* Another verifaction of these crcs would be nice */
	ROMX_LOAD( "6480090.u27", 0x10000, 0x8000, CRC(99703aa9) SHA1(18022e93a0412c8477e58f8c61a87718a0b9ab0e), ROM_SKIP(1) | ROM_BIOS(1))
	ROMX_LOAD( "6480091.u47", 0x10001, 0x8000, CRC(013ef44b) SHA1(bfa15d2180a1902cb6d38c6eed3740f5617afd16), ROM_SKIP(1) | ROM_BIOS(1))

//  ROM_SYSTEM_BIOS( 2, "atdiag", "IBM PC/AT 5170 w/Super Diagnostics")
//  ROMX_LOAD( "atdiage.bin", 0xf8000, 0x4000, CRC(e8855d0c) SHA1(c9d53e61c08da0a64f43d691bf6cadae5393843a), ROM_SKIP(1) | ROM_BIOS(2))
//  ROMX_LOAD( "atdiago.bin", 0xf8001, 0x4000, CRC(606fa71d) SHA1(165e45bae7ae2da274f1e645c763c5bfcbde027b), ROM_SKIP(1) | ROM_BIOS(2))

	/* Mainboard PALS */
	ROM_REGION( 0x2000, "pals", 0 )
	ROM_LOAD( "1501824_717750.mmipal14l4.u87.jed", 0x0000, 0x02E7, CRC(3c819a27) SHA1(d2f4889e628dbbef50b7f48cb1d1a313232bacc8)) /* MMI 1501824 717750 // (C)1983 IBM(M) */
	ROM_LOAD( "1503135_705075.mmipal14l4.u130.jed", 0x02E7, 0x02E7, CRC(aac77198) SHA1(b318da3a1fbe5402836c1b548e231e0794d0c032)) /* MMI 1503135 705075 // (C) IBM CORP 83 */
	/* P/N 6320947 Serial/Parallel ISA expansion card PAL */
	ROM_LOAD( "1503085.mmipal.u14.jed", 0x1000, 0x0800, NO_DUMP) /* MMI 1503085 8449 // (C) IBM CORP 83 */ /* Not sure of type */

	/* Mainboard PROMS */
	ROM_REGION( 0x2000, "proms", 0 )
	ROM_LOAD( "1501814.82s123an.u115", 0x0000, 0x0020, CRC(849c9217) SHA1(2955ae1705c3b59170f1373f99b3ea5c174c4544)) /* N82S123AN 8713 // SK-D 1501814 */
	ROM_LOAD( "55x8041.82s147an.u72", 0x0020, 0x0200, CRC(f2cc4fe6) SHA1(e285468516bd05083155a8a272583deef655315a)) /* S N82S147AN 8709 // V-C55X8041 */
ROM_END

ROM_START( ibm5170a )
	ROM_REGION(0x20000,"bios", 0)
	ROM_SYSTEM_BIOS( 0, "rev3", "IBM PC/AT 5170 11/15/85")
	ROMX_LOAD( "61x9266.u27", 0x10000, 0x8000, CRC(4995be7a) SHA1(8e8e5c863ae3b8c55fd394e345d8cca48b6e575c), ROM_SKIP(1) | ROM_BIOS(0))
	ROMX_LOAD( "61x9265.u47", 0x10001, 0x8000, CRC(c32713e4) SHA1(22ed4e2be9f948682891e2fd056a97dbea01203c), ROM_SKIP(1) | ROM_BIOS(0))

	ROM_SYSTEM_BIOS( 1, "3270at", "IBM 3270 PC/AT 5281 11/15/85") /* pretty much just a part string and checksum change from the 5170 rev3 */
	ROMX_LOAD( "62x0820.u27", 0x10000, 0x8000, CRC(e9cc3761) SHA1(ff9373c1a1f34a32fb6acdabc189c61b01acf9aa), ROM_SKIP(1) | ROM_BIOS(1)) /* T 62X0820-U27 8714HAK // TMM23256P-6746 // (C)IBM CORP 1981,-1985 */
	ROMX_LOAD( "62x0821.u47", 0x10001, 0x8000, CRC(b5978ccb) SHA1(2a1aeb9ae3cd7e60fc4c383ca026208b82156810), ROM_SKIP(1) | ROM_BIOS(1)) /* T 62X0821-U47 8715HAK // TMM23256P-6747 // (C)IBM CORP 1981,-1985 */

	/* Mainboard PALS */
	ROM_REGION( 0x2000, "pals", 0 )
	ROM_LOAD( "1501824_717750.mmipal14l4.u87.jed", 0x0000, 0x02E7, CRC(3c819a27) SHA1(d2f4889e628dbbef50b7f48cb1d1a313232bacc8)) /* MMI 1501824 717750 // (C)1983 IBM(M) */
	ROM_LOAD( "1503135_705075.mmipal14l4.u130.jed", 0x02E7, 0x02E7, CRC(aac77198) SHA1(b318da3a1fbe5402836c1b548e231e0794d0c032)) /* MMI 1503135 705075 // (C) IBM CORP 83 */    /* P/N 6320947 Serial/Parallel ISA expansion card PAL */
	ROM_LOAD( "1503085.mmipal.u14.jed", 0x1000, 0x0800, NO_DUMP) /* MMI 1503085 8449 // (C) IBM CORP 83 */ /* Not sure of type */

	/* Mainboard PROMS */
	ROM_REGION( 0x2000, "proms", 0 )
	ROM_LOAD( "1501814.82s123an.u115", 0x0000, 0x0020, CRC(849c9217) SHA1(2955ae1705c3b59170f1373f99b3ea5c174c4544)) /* N82S123AN 8713 // SK-D 1501814 */
	ROM_LOAD( "55x8041.82s147an.u72", 0x0020, 0x0200, CRC(f2cc4fe6) SHA1(e285468516bd05083155a8a272583deef655315a)) /* S N82S147AN 8709 // V-C55X8041 */
ROM_END


ROM_START( ibm5162 ) //MB p/n 62x1168 - IBM 5162, 6 Mhz, zero wait state RAM
	ROM_REGION16_LE(0x20000,"bios", 0)

	ROM_LOAD16_BYTE( "78x7460.u34", 0x10000, 0x8000, CRC(1db4bd8f) SHA1(7be669fbb998d8b4626fefa7cd1208d3b2a88c31)) /* 78X7460 U34 // (C) IBM CORP // 1981-1986 */
	ROM_LOAD16_BYTE( "78x7461.u35", 0x10001, 0x8000, CRC(be14b453) SHA1(ec7c10087dbd53f9c6d1174e8f14212e2aec1818)) /* 78X7461 U35 // (C) IBM CORP // 1981-1986 */

	/* Mainboard PALS */
	ROM_REGION( 0x2000, "pals", 0 )
	ROM_LOAD( "59x7599.mmipal20l8.u27.jed", 0x0000, 0x02E7, NO_DUMP) /* MMI PAL20L8ACN5 8631 // N59X7599 IBM (C)85 K3 */
	ROM_LOAD( "1503135.mmipal14l4.u81.jed", 0x02E7, 0x02E7, CRC(aac77198) SHA1(b318da3a1fbe5402836c1b548e231e0794d0c032)) /* MMI 1503135 8625 // (C) IBM CORP 83 */
	/* P/N 6320947 Serial/Parallel ISA expansion card PAL */
	ROM_LOAD( "1503085.mmipal.u14.jed", 0x1000, 0x0800, NO_DUMP) /* MMI 1503085 8449 // (C) IBM CORP 83 */ /* Not sure of type */

	/* Mainboard PROMS */
	ROM_REGION( 0x2000, "proms", 0 )
	ROM_LOAD( "1501814.82s123an.u72", 0x0000, 0x0020, CRC(849c9217) SHA1(2955ae1705c3b59170f1373f99b3ea5c174c4544)) /* N82S123AN 8623 // SK-U 1501814 */
	ROM_LOAD( "59x7594.82s147an.u90", 0x0020, 0x0200, NO_DUMP) /* S N82S147AN 8629 // VCT 59X7594 */
ROM_END

ROM_START( ibmps1es )
	ROM_REGION(0x40000, "bios", 0)
	ROM_LOAD16_BYTE( "ibm_1057757_24-05-90.bin", 0x00000, 0x20000, CRC(c8f81ea4) SHA1(925ed0e98f9f2997cb86554ef384bcfaf2a4ecbe))
	ROM_LOAD16_BYTE( "ibm_1057757_29-15-90.bin", 0x00001, 0x20000, CRC(c2dd6b5c) SHA1(f6b5785002dd628b6b1fb3bb101e076299eba3b6))
ROM_END


//**************************************************************************
//  Apricot systems
//**************************************************************************

// Apricot XEN-S (Venus I Motherboard 286)
ROM_START( xb42639 )
	/* actual VGA BIOS not dumped*/
	ROM_REGION(0x20000, "bios", 0)
	// XEN-S (Venus I Motherboard)
	ROM_LOAD16_BYTE( "3-10-17i.lo", 0x10000, 0x8000, CRC(3786ca1e) SHA1(c682d7c76f234559d03bcf21010c13c4dbeafb69))
	ROM_LOAD16_BYTE( "3-10-17i.hi", 0x10001, 0x8000, CRC(d66710eb) SHA1(e8c1cd5f9ecfbd8825655e416d7ddf2ae362e69b))
ROM_END

// Apricot XEN-S (Venus II Motherboard 286)
ROM_START( xb42639a )
	/* actual VGA BIOS not dumped*/
	ROM_REGION(0x20000, "bios", 0)
	// XEN-S (Venus II Motherboard)
	ROM_LOAD16_BYTE( "10217.lo", 0x10000, 0x8000, CRC(ea53406f) SHA1(2958dfdbda14de4e6b9d6a8c3781131ab1e32bef))
	ROM_LOAD16_BYTE( "10217.hi", 0x10001, 0x8000, CRC(111725cf) SHA1(f6018a45bda4476d40c5881fb0a506ff75ec1688))
ROM_END

// Apricot XEN-S (Venus I Motherboard 386)
ROM_START( xb42664 )
	/* actual VGA BIOS not dumped */
	ROM_REGION(0x20000, "bios", 0)
	// XEN-S (Venus I Motherboard)
	ROM_LOAD16_BYTE( "3-10-17i.lo", 0x10000, 0x8000, CRC(3786ca1e) SHA1(c682d7c76f234559d03bcf21010c13c4dbeafb69))
	ROM_LOAD16_BYTE( "3-10-17i.hi", 0x10001, 0x8000, CRC(d66710eb) SHA1(e8c1cd5f9ecfbd8825655e416d7ddf2ae362e69b))
ROM_END

// Apricot XEN-S (Venus II Motherboard 386)
ROM_START( xb42664a )
	/* actual VGA BIOS not dumped*/
	ROM_REGION(0x20000, "bios", 0)
	// XEN-S (Venus II Motherboard)
	ROM_LOAD16_BYTE( "10217.lo", 0x10000, 0x8000, CRC(ea53406f) SHA1(2958dfdbda14de4e6b9d6a8c3781131ab1e32bef))
	ROM_LOAD16_BYTE( "10217.hi", 0x10001, 0x8000, CRC(111725cf) SHA1(f6018a45bda4476d40c5881fb0a506ff75ec1688))
ROM_END

// Apricot Qi 300 (Rev D,E & F Motherboard)
ROM_START( xb42663 )
	ROM_REGION(0x20000, "bios", 0)
	ROM_LOAD16_BYTE( "qi310223.lo", 0x00000, 0x10000, CRC(53047f49) SHA1(7b38e533f7f27295269549c63e5477d950239167))
	ROM_LOAD16_BYTE( "qi310223.hi", 0x00001, 0x10000, CRC(4852869f) SHA1(98599d4691d40b3fac2936034c70b386ce4caf77))
ROM_END

// Apricot Qi 600 (Neptune Motherboard)
ROM_START( qi600 )
	ROM_REGION(0x20000, "bios", 0)
	ROM_LOAD16_BYTE( "qi610223.lo", 0x00000, 0x10000, CRC(563114a9) SHA1(62932b3bf0b5502ff708f604c21773f00afda58e))
	ROM_LOAD16_BYTE( "qi610223.hi", 0x00001, 0x10000, CRC(0ae133f6) SHA1(6039c366f7fe0ebf60b34c1a7d6b2d781b664001))
ROM_END

// Apricot Qi 900 (Scorpion Motherboard)
ROM_START( qi900 )
	ROM_REGION(0x20000, "bios", 0)
	ROM_LOAD16_BYTE( "qi910224.lo", 0x00000, 0x10000, CRC(b012ad3c) SHA1(807e788a6bd03f5e983fe503af3d0b202c754b8a))
	ROM_LOAD16_BYTE( "qi910224.hi", 0x00001, 0x10000, CRC(36e66d56) SHA1(0900c5272ec3ced550f18fb08db59ab7f67a621e))
ROM_END

// Apricot FTs (Scorpion)
ROM_START( ftsserv )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "fts10226.lo", 0x00000, 0x10000, CRC(efbd738f) SHA1(d5258760bafdaf1bf13c4a49da76d4b5e7b4ccbd))
	ROM_LOAD16_BYTE( "fts10226.hi", 0x00001, 0x10000, CRC(2460853f) SHA1(a6bba8d2f800140afd129c4d5278f7ae8fe7e63a))
	/* FT Server series Front Panel */
	ROM_REGION(0x10000,"front", 0)
	ROM_LOAD( "fp10009.bin",     0x0000, 0x8000, CRC(8aa7f718) SHA1(9ee6c6a5bb92622ea8d3805196d42ff68887d820))
ROM_END

// Apricot XEN-LS (Venus IV Motherboard)
ROM_START( apxenls3 )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "31020.lo", 0x10000, 0x8000, CRC(a19678d2) SHA1(d13c12fa7e94333555eabf58b81bad421e21cd91))
	ROM_LOAD16_BYTE( "31020.hi", 0x10001, 0x8000, CRC(4922e020) SHA1(64e6448323dad2209e004cd93fa181582e768ed5))
ROM_END

// Apricot LANstation (Krypton Motherboard)
ROM_START( aplanst )
	ROM_REGION(0x20000,"bios", 0)
	ROM_SYSTEM_BIOS(0, "31024", "Bios 3-10-24")
	ROMX_LOAD( "31024.lo", 0x10000, 0x8000, CRC(e52b59e1) SHA1(cfcaa4d8d658df8df463108ef30695bd4ee7a617), ROM_SKIP(1) | ROM_BIOS(0))
	ROMX_LOAD( "31024.hi", 0x10001, 0x8000, CRC(7286aefa) SHA1(dfc0e3f4936780fa62ae9ec392ce17aa65e717cd), ROM_SKIP(1) | ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "31025", "Bios 3-10-25")
	ROMX_LOAD( "31025.lo", 0x10000, 0x8000, CRC(1aec09bc) SHA1(51d56c97c7c1674554aa89b68945329ea967a8bc), ROM_SKIP(1) | ROM_BIOS(1))
	ROMX_LOAD( "31025.hi", 0x10001, 0x8000, CRC(0763caa5) SHA1(48510a933dcd6efea3b14d04444f584c3e6fefeb), ROM_SKIP(1) | ROM_BIOS(1))
	ROM_SYSTEM_BIOS(2, "31026", "Bios 3-10-26i")
	ROMX_LOAD( "31026i.lo", 0x10000, 0x8000, CRC(670b6ab4) SHA1(8d61a0edf187f99b67eb58f5e11276deee801d17), ROM_SKIP(1) | ROM_BIOS(2))
	ROMX_LOAD( "31026i.hi", 0x10001, 0x8000, CRC(ef01c54f) SHA1(911f95d65ab96878e5e7ebccfc4b329db47a1351), ROM_SKIP(1) | ROM_BIOS(2))
ROM_END

// Apricot LANstation (Novell Remote Boot)
ROM_START( aplannb )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "lsl31025.lo", 0x00000, 0x10000, CRC(8bb7229b) SHA1(31449d12884ec4e7752e6c1ce7ce9e0d044eadf2))
	ROM_LOAD16_BYTE( "lsh31025.hi", 0x00001, 0x10000, CRC(09e5c1b9) SHA1(d42be83b4181d3733268c29df04a4d2918370f4e))
ROM_END

// Apricot VX FT server
ROM_START( apvxft )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "ft10221.lo", 0x00000, 0x10000, CRC(8f339de0) SHA1(a6542406746eaf1ff7f9e3678c5cbe5522fb314a))
	ROM_LOAD16_BYTE( "ft10221.hi", 0x00001, 0x10000, CRC(3b16bc31) SHA1(0592d1d81e7fd4715b0612083482db122d78c7f2))
ROM_END

// Apricot LS Pro (Caracal Motherboard)
ROM_START( aplscar )
	ROM_REGION(0x40000,"bios", 0)
	ROM_SYSTEM_BIOS(0, "car306", "Caracal 3.06")
	ROMX_LOAD( "car306.bin",   0x00000, 0x40000, CRC(fc271dea) SHA1(6207cfd312c9957243b8157c90a952404e43b237), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "car307", "Caracal 3.07")
	ROMX_LOAD( "car307.bin",   0x00000, 0x40000, CRC(66a01852) SHA1(b0a68c9d67921d27ba483a1c50463406c08d3085), ROM_BIOS(1))
ROM_END

// Apricot XEN PC (A1 Motherboard)
ROM_START( apxena1 )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD( "a1-r26.bin",   0x00000, 0x20000, CRC(d29e983e) SHA1(5977df7f8d7ac2a154aa043bb6f539d96d51fcad))
ROM_END

// Apricot XEN PC (P2 Motherboard)
ROM_START( apxenp2 )
	ROM_REGION(0x20000,"bios", 0)
	ROM_SYSTEM_BIOS(0, "p2r02g2", "p2r02g2")
	ROMX_LOAD( "p2r02g2.bin",   0x00000, 0x20000, CRC(311bcc5a) SHA1(be6fa144322077dcf66b065e7f4e61aab8c278b4), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "lep121s", "SCSI-Enabling ROMs")
	ROMX_LOAD("p2r01f0.bin",   0x00000, 0x20000, CRC(bbc68f2e) SHA1(6954a52a7dda5521794151aff7a04225e9c7df77), ROM_BIOS(1))
ROM_END

// Apricot XEN-i 386 (Leopard Motherboard)
ROM_START( apxeni )
	ROM_REGION(0x20000,"bios", 0)
	ROM_SYSTEM_BIOS(0, "lep121", "Rom Bios 1.2.1")
	ROMX_LOAD( "lep121.bin", 0x18000, 0x8000, CRC(948c1927) SHA1(d06bdbd6292db73c815ad1060daf055293dfddf5), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "lep121s", "SCSI-Enabling ROMs")
	ROMX_LOAD( "lep121s.bin", 0x18000, 0x8000, CRC(296118e4) SHA1(d1feaa9704e6ce3bc10c900bdd310d9494b02304), ROM_BIOS(1))
ROM_END

// Apricot LS Pro (Bonsai Motherboard)
ROM_START( aplsbon )
	ROM_REGION(0x20000,"bios", 0)
	ROM_SYSTEM_BIOS(0, "bon106", "Boinsai 1-06")
	ROMX_LOAD( "bon106.bin",   0x00000, 0x20000, CRC(98a4eb76) SHA1(e0587afa78aeb9a8803f9b9f9e457e9847b0a2b2), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "bon203", "Boinsai 2-03")
	ROMX_LOAD( "bon203.bin",   0x00000, 0x20000, CRC(32a0e125) SHA1(a4fcbd76952599993fa8b76aa36a96386648abb2), ROM_BIOS(1))
	ROM_SYSTEM_BIOS(2, "bon10703", "Boinsai 1-07-03")
	ROMX_LOAD( "bon10703.bin",   0x00000, 0x20000, CRC(0275b3c2) SHA1(55ef4cbb7f3166f678aaa478234a42049deaba5f), ROM_BIOS(2))
	ROM_SYSTEM_BIOS(3, "bon20402", "Boinsai 2.03")
	ROMX_LOAD( "bon20402.bin",   0x00000, 0x20000, CRC(ac5803fb) SHA1(b8fe92711c6a38a5d9e6497e76a0929c1685c631), ROM_BIOS(3))
ROM_END

// Apricot XEN-LS II (Samurai Motherboard)
ROM_START( apxlsam )
	ROM_REGION(0x20000,"bios", 0)
	ROM_SYSTEM_BIOS(0, "sam107", "ROM BIOS Version 1-07")
	ROMX_LOAD( "sam1-07.bin",   0x00000, 0x20000, CRC(65e05a8e) SHA1(c3cd198a129122cb05a28798e54331b06cfdd310), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "sam206", "ROM BIOS Version 2-06")
	ROMX_LOAD( "sam2-06.bin",   0x00000, 0x20000, CRC(9768bb0f) SHA1(8166b77b133072f72f23debf85984eb19578ffc1), ROM_BIOS(1))
ROM_END

// Apricot FTs (Panther Rev F 1.02.26)
ROM_START( aprpand )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "pf10226.std", 0x00000, 0x10000, CRC(7396fb87) SHA1(a109cbad2179eec55f86c0297a59bb015461da21))
	ROM_CONTINUE( 0x00001, 0x10000 )
ROM_END

// Apricot FT//ex 486 (J3 Motherboard)
ROM_START( aprfte )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD( "1-2r2-4.486", 0x00000, 0x20000, CRC(bccc236d) SHA1(0765299363e68cf65710a688c360a087856ece8f))
ROM_END


//**************************************************************************
//  Amstrad systems
//**************************************************************************

// Amstrad MegaPC
ROM_START( megapc )
	ROM_REGION(0x40000, "isa", ROMREGION_ERASEFF)
	ROM_REGION(0x20000, "bios", 0)
	ROM_LOAD16_BYTE( "41651-bios lo.u18",  0x00000, 0x10000, CRC(1e9bd3b7) SHA1(14fd39ec12df7fae99ccdb0484ee097d93bf8d95))
	ROM_LOAD16_BYTE( "211253-bios hi.u19", 0x00001, 0x10000, CRC(6acb573f) SHA1(376d483db2bd1c775d46424e1176b24779591525))
ROM_END

// Amstrad MegaPC Plus
ROM_START( megapcpl )
	ROM_REGION(0x40000, "isa", ROMREGION_ERASEFF)
	ROM_REGION(0x20000, "bios", 0)
	ROM_LOAD16_BYTE( "41652.u18",  0x00000, 0x10000, CRC(6f5b9a1c) SHA1(cae981a35a01234fcec99a96cb38075d7bf23474))
	ROM_LOAD16_BYTE( "486slc.u19", 0x00001, 0x10000, CRC(6fb7e3e9) SHA1(c439cb5a0d83176ceb2a3555e295dc1f84d85103))
ROM_END

// Amstrad MegaPC Plus (Winbond chipset)
ROM_START( megapcpla )
	ROM_REGION(0x40000, "bios", 0)
	ROM_LOAD( "megapc_bios.bin",  0x00000, 0x10000, CRC(b84938a2) SHA1(cecab72a96993db4f7c648c229b4211a8c53a380))
	ROM_CONTINUE(0x30000, 0x10000)
ROM_END

// Amstrad PC2386
ROM_START( pc2386 )
	ROM_REGION( 0x40000, "bios", 0 )
	ROM_LOAD( "c000.bin", 0x00000, 0x4000, CRC(33145bbf) SHA1(c49eaec19f656482e12c8bf282cd4ee5986d227d) )
	ROM_LOAD( "f000.bin", 0x30000, 0x10000, CRC(f54a063c) SHA1(ce70ec493053afab662f51199ef9c9304a209b8e) )
	ROM_FILL(0x3fff1, 1, 0x5b) // f000:e05b is the standard at reset vector jump address
	ROM_FILL(0x3fff2, 1, 0xe0) // why does this rom's point to nowhere sane?
	ROM_FILL(0x3fff3, 1, 0x00) // and why does the rest of the rom look okay?
	ROM_FILL(0x3fff4, 1, 0xf0)

	ROM_REGION( 0x1000, "keyboard", 0 ) // PC2286 / PC2386 102-key keyboard
	ROM_LOAD( "40211.ic801", 0x000, 0x1000, CRC(4440d981) SHA1(a76006a929f26c178e09908c66f28abc92e7744c) )
ROM_END


//**************************************************************************
//  Commodore systems
//**************************************************************************

// Commodore Laptop C286-LT - screen remains blank - CPU: AMD N80C286-12 - Chipset: OAK OTI054 (J9105), OTI055 (FOY 107), OTI053 (J9105), OTI051(J9107)
ROM_START( c286lt )
	ROM_REGION(0x20000, "bios", 0) // BIOS contains Cirrus Logic VGA firmware, rebadged Sanyo MBC-17NB
	ROM_SYSTEM_BIOS(0, "c286lt13", "C286-LT V1.3")
	ROMX_LOAD( "cbm-c286lt-bios-v1.3-390854-01-1200.bin", 0x00000, 0x20000, CRC(785e87d2) SHA1(e271500169955473d44102a60f051b5f6cfae589), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "c286v17-854", "C286-LT V1.7 390854")
	ROMX_LOAD( "cbm-c286lt-bios-v1.7-390854-04.bin", 0x00000, 0x20000, CRC(2f762ab1) SHA1(d6cb37f0dcb261df86c01d4e1eabe10a52b2070f), ROM_BIOS(1))
	ROM_SYSTEM_BIOS(2, "c286v17-940", "C286-LT V1.7 390940")
	ROMX_LOAD( "cbm-c286lt-bios-v1.7-390940-04.bin", 0x00000, 0x20000, CRC(22d45839) SHA1(bc7159440c52c1f69957da8fdfa76ac0a42ebd16), ROM_BIOS(2))
ROM_END

// Commodore SL 286-16 - this is the wider one, the "slimline model" has only two ISA slots on a riser, an online OTI VGA and a Headland chipset
ROM_START( csl286 ) // continuous short beeps after POST - Chipset is marked "Chips", one IC is P82C212B-12 (16MHz) - system has a WDC VGA card
	ROM_REGION(0x20000, "bios", 0) // one ISA slot with a riser providing five slots - is or is similar to a DTK PTM 1661c
	ROM_LOAD16_BYTE( "cbm-sl286-16-bios-lo-v1.02-390958-03.bin", 0x10000, 0x8000, CRC(7d0c9472) SHA1(1d614f6835a388f67ece73f40d8a9f65cca3e855))
	ROM_LOAD16_BYTE( "cbm-sl286-16-bios-hi-v1.02-390959-03.bin", 0x10001, 0x8000, CRC(b6d81ddd) SHA1(9478bb846bd1e0dc1904f21d43c6df01ecbc9c83))
ROM_END

// Commodore SL 386SX
ROM_START( c386sx16 )
	ROM_REGION(0x20000, "bios", 0)
	// actual VGA BIOS not dumped - uses a WD Paradise according to http://www.cbmhardware.de/pc/pc.php
	// complains "Time-of-day clock stopped"
	// photos of the system show one ISA16 slot for a riser card, an Acumos AVGA2 chip, a VLSI 82C311 IC, one other VLSI and an Acer chip.
	ROM_SYSTEM_BIOS(0, "c386sxv100", "SL 386SX V1.00") // Commodore 80386SX BIOS Rev. 1.00 - 390914-01/390915-01 - continuous beeps after POST
	ROMX_LOAD( "cbm-sl386sx-bios-lo-v1.0-390914-01.bin", 0x10000, 0x8000, CRC(03e00583) SHA1(8be8478cabd9de3d547a08207ffdcd39bf1bcd94), ROM_SKIP(1) | ROM_BIOS(0))
	ROMX_LOAD( "cbm-sl386sx-bios-hi-v1.0-390915-01.bin", 0x10001, 0x8000, CRC(cbe31594) SHA1(d6ace0b5ae4a0f63d047c2918210188f4c77c0c0), ROM_SKIP(1) | ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "c386sxv101", "SL 386SX V1.01") // Rev. 1.01 - 390914-02/390915-02 - continuous beeps after POST
	ROMX_LOAD( "cbm-sl386sx-bios-lo-v1.01-390914-02-2700.bin", 0x10000, 0x8000, CRC(711f1523) SHA1(5318127cd42e60dabd221ae8dd16812726a0e889), ROM_SKIP(1) | ROM_BIOS(1))
	ROMX_LOAD( "cbm-sl386sx-bios-hi-v1.01-390915-02-3b00.bin", 0x10001, 0x8000, CRC(a1390cbc) SHA1(12aef4b95581e8c4489036c75697f18e9f3727b5), ROM_SKIP(1) | ROM_BIOS(1))
	ROM_SYSTEM_BIOS(2, "c386sxv102", "SL 386SX V1.02") // Rev. 1.02 - 390914-03/390914-03/390915-03
	ROMX_LOAD( "cbm-sl386sx-bios-lo-v1.02-390914-03-0300.bin", 0x10000, 0x8000, CRC(301eb832) SHA1(6c599792b254b6d98dc130040d4f7858fd504f15), ROM_SKIP(1) | ROM_BIOS(2))
	ROMX_LOAD( "cbm-sl386sx-bios-hi-v1.02-390915-03-3800.bin", 0x10001, 0x8000, CRC(01815d9d) SHA1(0af291626e71ed65ff6dfee2fe4776a29f2bbb97), ROM_SKIP(1) | ROM_BIOS(2))
	ROM_SYSTEM_BIOS(3, "c386sxv103", "SL 386SX V1.03") // Commodore 80386SX BIOS Rev. 1.03 -
	// this was replaced with the consistently named ROMs from http://www.zimmers.net/cbmpics/cpcs3.html, the 'hi' ROM looks like a bad dump, with its alternative the POST comes up
	// ROMX_LOAD( "390914-01.u39", 0x10000, 0x8000, CRC(8f849198) SHA1(550b04bac0d0807d6e95ec25391a81272779b41b), ROM_SKIP(1) | ROM_BIOS(3)) /* 390914-01 V1.03 CS-2100 U39 Copyright (C) 1990 CBM */
	// ROMX_LOAD( "390915-01.u38", 0x10001, 0x8000, CRC(ee4bad92) SHA1(6e02ef97a7ce336485814c06a1693bc099ce5cfb), ROM_SKIP(1) | ROM_BIOS(3)) /* 390915-01 V1.03 CS-2100 U38 Copyright (C) 1990 CBM */
	ROMX_LOAD( "cbm-sl386sx-bios-lo-v1.03-390914-03.bin", 0x10000, 0x8000, CRC(8f849198) SHA1(550b04bac0d0807d6e95ec25391a81272779b41b), ROM_SKIP(1) | ROM_BIOS(3))
	ROMX_LOAD( "cbm-sl386sx-bios-hi-v1.03-390915-03.bin", 0x10001, 0x8000, CRC(ebdd5097) SHA1(2e4d2375efb9c1ebc0ccf3bb1ff2bb64c449af32), ROM_SKIP(1) | ROM_BIOS(3))
	ROM_SYSTEM_BIOS(4, "c386sxv104", "SL 386SX V1.04") // Rev. 1.04 - 390914-04/390915-04
	ROMX_LOAD( "cbm-sl386sx-bios-lo-v1.04-390914-04.bin", 0x10000, 0x8000, CRC(377a8e1c) SHA1(9a36f10ad496e44f190937426f3e7de368d6ab7b), ROM_SKIP(1) | ROM_BIOS(4))
	ROMX_LOAD( "cbm-sl386sx-bios-hi-v1.04-390915-04.bin", 0x10001, 0x8000, CRC(4149f5d9) SHA1(9a62b235ac45145ca6720d11b2cbc17b8c25704a), ROM_SKIP(1) | ROM_BIOS(4))
ROM_END

// Commodore Laptop C386SX-LT -  screen remains blank
ROM_START( c386sxlt )
	ROM_REGION(0x20000, "bios", 0) // BIOS contains Cirrus Logic VGA firmware, rebadged Sanyo MBC-18NB, but different versions exist
	ROM_SYSTEM_BIOS(0, "c386sxlt_b400", "C386SX-LT V1.2 B400")
	ROMX_LOAD( "cbm-386lt-bios-v1.2-390981-03-b400.bin", 0x00000, 0x20000, CRC(b84f6883) SHA1(3f31060726c7c49a891b35ab024524a4239eb4d0), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "c386sxlt_cf00", "C386SX-LT V1.2 CF00")
	ROMX_LOAD( "cbm-386lt-bios-v1.2-390982-03-cf00.bin", 0x00000, 0x20000, CRC(c8cd2641) SHA1(18e55bff494c42389dfb445f2bc11e78db30e5f7), ROM_BIOS(1))
ROM_END

// Commodore DT386
ROM_START( dt386 )
	// BIOS-String: 40-0502-DG1112-00101111-070791-SOLUTION-0 / 386DX-33 BIOS V1.00 #391560-0
	ROM_REGION(0x20000, "bios", 0)
	ROM_SYSTEM_BIOS(0, "dt386vp10", "DT386 V.pre 1.0")
	ROMX_LOAD( "cbm-dt386dx-33c-bios-hi-vpre1.0-391560-01.bin", 0x10000, 0x10000, CRC(600472f4) SHA1(2513c8bdb24fe27f73c82cbca9e1a983e4a0ba10), ROM_BIOS(0))
	// BIOS-String: 40-0500-DG112-00101111-070791-SOLUTION-0 / 386DX-33 Rev.1E (091592)
	ROM_SYSTEM_BIOS(1, "dt386v1e", "DT386 V.1e")
	ROMX_LOAD( "cbm-dt386dx-33c-bios-hi-v-xxxxxx-xx.bin", 0x10000, 0x10000, CRC(dc1ca1b5) SHA1(7441cb9d5ad5ca6e6425de73295eb74d1281929f), ROM_BIOS(1))
	// BIOS-String: 40-0500-DG1112-00101111-070791-SOLUTION-0 / 386DX-33 Rev.1E (091592) / Commodore BIOS Version 1.0 391560-01
	ROM_SYSTEM_BIOS(2, "dt386v10", "DT386 V.1.0")
	ROMX_LOAD( "cbm-dt386dx-33c-bios-hi-v1.00-391560-01.bin", 0x10000, 0x10000, CRC(da1f7e6d) SHA1(b825fc015233e7eef93a3abbdfc3eeb0da096f50), ROM_BIOS(2))
	// BIOS-String: 40-0501-DG1112-00101111-070791-SOLUTION-0 / Commodore 386DX-33 BIOS Rev. 1.01 391560-02
	ROM_SYSTEM_BIOS(3, "dt386v101", "DT386 V.1.01")
	ROMX_LOAD( "cbm-dt386dx-33c-bios-hi-v1.01-391560-02.bin", 0x10000, 0x10000, CRC(b3157f57) SHA1(a1a96c8d111e3c1da8f655b4b7e1c5be4af140e9), ROM_BIOS(3))
ROM_END

// Commodore DT486 - BIOS contains Paradise VGA ROM - Keyboard error
ROM_START( dt486 ) // BIOS string: 41-0102-001283-00111111-060692-SYM_486-0 - Commodore 486DX-33 BIOS Version 1.01 391521-02
	ROM_REGION(0x20000, "bios", 0)
	ROM_SYSTEM_BIOS(0, "dt486", "DT486")
	ROM_LOAD( "cbm-dt486dx-33c-bios-u32--v1.01-391521-02.bin", 0x00000, 0x20000, BAD_DUMP CRC(a3977625) SHA1(83bc563fb41eae3dd5d260f13c6fe8979a77e99c))
ROM_END

// Commodore PC 30-III
ROM_START( pc30iii ) // Chipset: MOS 5720 1788 41, Faraday FE3010B, FE3020, FE3000A, FE3030 - ISA8: 1, ISA16: 3
	ROM_REGION(0x20000, "bios", 0)
	ROM_SYSTEM_BIOS(0, "pc30iii_v200", "PC 30-III v2.00")
	ROMX_LOAD( "pc30iii_390339-02_3e58.bin", 0x18000, 0x4000, CRC(f4a5860e) SHA1(b843744fe928bcfd8e037b0208cc85c0746535cf),ROM_SKIP(1) | ROM_BIOS(0) )
	ROMX_LOAD( "pc30iii_390340-02_42a8.bin",  0x18001, 0x4000, CRC(934df54a) SHA1(3b1c8916ba2b2517bc9f26dd74254586bcf0e91d),ROM_SKIP(1) | ROM_BIOS(0) )
	ROM_SYSTEM_BIOS(1, "pc30iii_v201", "PC 30-III v2.01")
	ROMX_LOAD( "cbm-pc30c-bios-lo-v2.01-390339-03-35c1.bin", 0x18000, 0x4000, CRC(36307aa9) SHA1(50237ffea703b867de426ab9ebc2af46bac1d0e1),ROM_SKIP(1) | ROM_BIOS(1) )
	ROMX_LOAD( "cbm-pc30c-bios-hi-v2.01-390340-03-3f3f.bin",  0x18001, 0x4000, CRC(41bae42d) SHA1(27d6ad9554be86359d44331f25591e3122a31519),ROM_SKIP(1) | ROM_BIOS(1) )
ROM_END

// Commodore PC 40-III
// Chipset: MOS 5720 3888 41, Faraday FE3010B, FE3000A, FE3030, FE3020 - onboard VGA is a Paradise PVGA1A - ISA8: 1, ISA16: 3
ROM_START( pc40iii )
	// VGA BIOS
	// ROM_LOAD( "pc40iii_390337-01_v2.0_f930.bin", 0x00000, 0x4000, CRC(82b210d3) SHA1(1380107deef02455c6ce4d12162fdc32e375cbde))
	// ROM_LOAD( "pc40iii_390338-01_v2.0_b6d0.bin", 0x00001, 0x4000, CRC(526d7424) SHA1(60511ca0e856b7611d556aa82219d646f96c9b94))

	ROM_REGION(0x20000, "bios", 0)
	ROM_SYSTEM_BIOS(0, "pc40iii_v200", "PC 40-III v2.00")
	ROMX_LOAD( "pc40iii_390339-01_v2.0_473a.bin", 0x18000, 0x4000, CRC(2ad2dc0f) SHA1(b41d5988fda8cc23418c3f665d780c617aa3fc2b),ROM_SKIP(1) | ROM_BIOS(0) )
	ROMX_LOAD( "pc40iii_390340-01_v2.0_4bc6.bin",  0x18001, 0x4000, CRC(62dc7d93) SHA1(e741528697b1d00450fd18e3db8b925606e0bd22),ROM_SKIP(1) | ROM_BIOS(0) )
	ROM_SYSTEM_BIOS(1, "pc40iii_v201", "PC 40-III v2.03")
	ROMX_LOAD( "cbm-pc40c-bios-lo-v2.03-390339-04-03bc.bin", 0x18000, 0x4000, CRC(e5fd11c6) SHA1(18c21d9a4ae687eef5464b76a0d614b9dfd30ec8),ROM_SKIP(1) | ROM_BIOS(1) )
	ROMX_LOAD( "cbm-pc40c-bios-hi-v2.03-390340-04-3344.bin",  0x18001, 0x4000, CRC(63d6f0f7) SHA1(a88dee7694baa71913acbe76cb4e2a4e95979ad9),ROM_SKIP(1) | ROM_BIOS(1) )
ROM_END

// Commodore PC 45-III - this is a PC 40-III with a BIOS update and a bigger, 52MB, harddisk
ROM_START( pc45iii )
	ROM_REGION(0x20000, "bios", 0) // Commodore 286 BIOS Rev. 2.04 - 390339-05/390340-05
	ROM_LOAD16_BYTE( "cbm-pc45c-bios-lo-v2.04-390339-05.bin", 0x18000, 0x4000, CRC(b87b4cd1) SHA1(a6723d63a255b4010ad32b5dc9797e4724a64c14))
	ROM_LOAD16_BYTE( "cbm-pc45c-bios-hi-v2.04-390340-05.bin", 0x18001, 0x4000, CRC(b6976111) SHA1(e7c92307db3969a6a50ffd8cbc3d2ed16b4df6ad))
ROM_END

// Commodore PC 50-II - a photo of the mainboard shows four ROMs (two each for BIOS and VGA), so the 128K dumps available were probably made from a running system.
ROM_START( pc50ii ) // Chipset: Chips P82C211-12 C(16MHz), P82C212B-12 (16MHz), P82C215-12, P82C206, VLSI 8942VT - ISA8: 1, ISA16: 5
	ROM_REGION(0x20000, "bios", 0) // keyboard MCU is P8042AH MITAC V2.48 (undumped), onboard video PVGA1A-JK
	// 0: Commodore PC50-II BIOS Rev1.0 - 609200-03
	ROM_SYSTEM_BIOS(0, "pc50iiv100", "PC 50-II V1.00") // complains "Time-of-day clock stopped" and reboots
	ROMX_LOAD( "cbm-pc50b-bios-lo-v1.00-390339-01.bin", 0x10001, 0x8000, CRC(0f0e2fd6) SHA1(61a8043ac919c2a8fe668bf25e5f0b67868d11ae),ROM_SKIP(1) | ROM_BIOS(0) )
	ROMX_LOAD( "cbm-pc50b-bios-hi-v1.00-390340-01.bin", 0x10000, 0x8000, CRC(87008421) SHA1(cf41973a7bd439441baec1138dd63044fafe7391),ROM_SKIP(1) | ROM_BIOS(0) )
	// 1: Commodore PC50-II BIOS Rev1.01 - 609200-03
	ROM_SYSTEM_BIOS(1, "pc50iiv101", "PC 50-II V1.01") // same behaviour as above
	ROMX_LOAD( "cbm-pc50b-bios-lo-u31-v1.01-xxxxxx-xx-a800.bin", 0x10001, 0x8000, CRC(bf2c7009) SHA1(6b94df37861b30ef6a39a4ed64d4c9ac1e96043a),ROM_SKIP(1) | ROM_BIOS(1) )
	ROMX_LOAD( "cbm-pc50b-bios-hi-u28-v1.01-xxxxxx-xx-cd00.bin",  0x10000, 0x8000, CRC(628fcb2f) SHA1(74241cbcb4e183015d5e7a516d46b08d6f47504a),ROM_SKIP(1) | ROM_BIOS(1) )
	// 2: Commodore PC50-II BIOS Rev1.02 - 609200-03
	ROM_SYSTEM_BIOS(2, "pc50iiv102", "PC 50-II V1.02") // same behaviour as above
	ROMX_LOAD( "cbm-pc50b-bios-lo-u32-v1.02-609200-03o-9e00.bin", 0x10001, 0x8000, CRC(57225c22) SHA1(3b2ded119480ce2dd5bb7c113c5814ce47e17d4c),ROM_SKIP(1) | ROM_BIOS(2))
	ROMX_LOAD( "cbm-pc50b-bios-hi-u27-v1.02-609200-03e-c400.bin", 0x10000, 0x8000, CRC(4ec903af) SHA1(fb70e22c0538d7310c9034626d4d9c0e4f63dfd7),ROM_SKIP(1) | ROM_BIOS(2))

	// VGA BIOS
	// ROM_LOAD( "m_pc50-ii_1bad_pvgadk_odd.bin", 0x00000, 0x8000, CRC(f36eca7e) SHA1(4335fa4a4567cbc010ff2ffeb97a536ed93b0219))
	// ROM_LOAD( "m_pc50-ii_54e3_pvgadk_even.bin", 0x00001, 0x8000, CRC(01f6b964) SHA1(799a84ddde8a7672a6df9439bad6198ec3ff98ec))
ROM_END

// Commodore PC-60-III - complaining "time-of-day-clock stopped" - Phoenix P8242 '87 keyboard BIOS 
ROM_START( pc60iii ) // onboard Paradise PVGA1A-JK, 2xRS232, 1xparallel, keyboard
	ROM_REGION(0x20000, "bios", 0) // Chipset: Chips P82C301C, P82B305, P82A303, P82A304, Chips F82307, 25531/390423-1 COMBO SMC B9016, Commodore CSG, four MOSEL MS82C308-35JC, ISA16: 7, RAM card: 2 (up to 8MB, extended ISA connector)
	// 0: Commodore PC60-III 80386 BIOS Rev. 1.2 - 390473-01/390474-01
	ROM_SYSTEM_BIOS(0, "pc60iiiv12", "PC60-III V1.2")
	ROMX_LOAD( "cbm-pc60c-bios-lo_u73-v1.2-390473-01.bin", 0x00000, 0x10000, CRC(ff2cd8b3) SHA1(62e95f818c5016f4be2741872dc644999dee33ce),ROM_SKIP(1) | ROM_BIOS(0) )
	ROMX_LOAD( "cbm-pc60c-bios-hi_u67-v1.2-390474-01.bin", 0x00001, 0x10000, CRC(690fff4b) SHA1(adc262d40da64354c7c76b61f46d2c7ed35e9df9),ROM_SKIP(1) | ROM_BIOS(0) )
	// 1: Commodore PC-60-III 80386/25MHz BIOS Rev. 1.3 390473-02/390474-02
	ROM_SYSTEM_BIOS(1, "pc60iiiv13", "PC60-III V1.3")
	ROMX_LOAD( "cbm-pc60c-bios-lo-v1.30-390473-02.bin", 0x00000, 0x10000, CRC(3edd83e0) SHA1(3ebf393d6c33d9b8600f56c7be9eedb5aefb2645),ROM_SKIP(1) | ROM_BIOS(1) )
	ROMX_LOAD( "cbm-pc60c-bios-hi-v1.30-390474-02.bin", 0x00001, 0x10000, CRC(12209ac4) SHA1(76f271944894c77dde735da2b2ba065e81a99564),ROM_SKIP(1) | ROM_BIOS(1) )
	// 2: Commodore PC60-III 80386/25MHz BIOS rev.1.33 390473-04/390474-04
	ROM_SYSTEM_BIOS(2, "pc60iiiv133", "PC60-III V1.33")
	ROMX_LOAD( "cbm-pc60-bios-lo-v1.33-390473-04.bin", 0x00000, 0x10000, CRC(afd0aae0) SHA1(7fa4388c939f30e603f0fc90f9512e500b282432),ROM_SKIP(1) | ROM_BIOS(2) )
	ROMX_LOAD( "cbm-pc60-bios-hi-v1.33-390474-04.bin", 0x00001, 0x10000, CRC(7b7958db) SHA1(d542c63ec0d17e1e87403ac01735e75ce58302a9),ROM_SKIP(1) | ROM_BIOS(2) )
	// 3: Commodore PC60-III 80386-25MHz BIOS Rev.1.3.5 - 390473-06/390474-06
	ROM_SYSTEM_BIOS(3, "pc60iiiv135", "PC60-III V1.3.5")
	ROMX_LOAD( "cbm-pc60c-bios-lo-v1.35-390473-06.bin", 0x00000, 0x10000, CRC(6ff4aea9) SHA1(3fcb3a5c275dbfb93c3e55224d731f1b52343d4b),ROM_SKIP(1) | ROM_BIOS(3) )
	ROMX_LOAD( "cbm-pc60c-bios-hi-v1.35-390474-06.bin", 0x00001, 0x10000, CRC(5a04e3f0) SHA1(311a3ff3e578ecbce0ecd9f3b006ab772623255a),ROM_SKIP(1) | ROM_BIOS(3) )
	// 4: Commodore 80386 BIOS Rev.1.36 - 390473-07/390474-07
	ROM_SYSTEM_BIOS(4, "c386v136", "Commodore 386 V1.3.6")
	ROMX_LOAD( "cbm-pc60c-bios-lo-v1.36-390473-07-9b0e.bin", 0x00000, 0x10000, CRC(be7504f8) SHA1(a45f7690a41d416bc10ca6f583b8fdd2219a3d8a),ROM_SKIP(1) | ROM_BIOS(4) )
	ROMX_LOAD( "cbm-pc60c-bios-hi-v1.36-390474-07-ddf2.bin", 0x00001, 0x10000, CRC(d8e08ffa) SHA1(fb5fb973b01df6e486d76076d3373583758b1d01),ROM_SKIP(1) | ROM_BIOS(4) )
	// 5: Commodore 80386 BIOS Rev.1.36.03 - 390473-07/390474-07
	ROM_SYSTEM_BIOS(5, "c386v13603", "Commodore 386 V1.3.603")
	ROMX_LOAD( "cbm-pc60c-bios-lo-v1.3603-390473-07.bin", 0x00000, 0x10000, CRC(2cda07c7) SHA1(01fd6260192541dd73f88d2cc0f99fe5603efc81),ROM_SKIP(1) | ROM_BIOS(5) )
	ROMX_LOAD( "cbm-pc60c-bios-hi-v1.3603-390474-07.bin", 0x00001, 0x10000, CRC(39845b9b) SHA1(9d3cbfde4b2acc1d576aafa80126b75a49d3d8df),ROM_SKIP(1) | ROM_BIOS(5) )
ROM_END

// Commodore PC-70-III - complaining "time-of-day-clock stopped"
ROM_START( pc70iii )
	ROM_REGION(0x20000, "bios", 0)
	// 0: Commodore 80486 BIOS Rev.1.00 - 390934-01/390935-01
	ROM_SYSTEM_BIOS(0, "pc70v100", "PC70 V1.00")
	ROMX_LOAD("cbm-pc70c_bios-u117-lo-v1.00-390934-01.bin", 0x00000, 0x10000, CRC(3eafd811) SHA1(4deecd5dc429ab09e7c0d308250cb716f8b8e42a), ROM_SKIP(1) | ROM_BIOS(0))
	ROMX_LOAD("cbm-pc70c_bios-u112-hi-v1.00-390935-01.bin", 0x00001, 0x10000, CRC(2d1dfec9) SHA1(d799b3579577108549d9d4138a8a32c35ac3ce1c), ROM_SKIP(1) | ROM_BIOS(0))
	// 1: Commodore PC70-III 80486/25MHz BIOS Rev.1.00.01 - xxxxxx - 00/xxxxxx-00
	ROM_SYSTEM_BIOS(1, "pc70v101", "PC70 V1.00.01")
	ROMX_LOAD("cbm-pc70c-bios-lo-v1.00.01-xxxxxx-00.bin", 0x00000, 0x10000, CRC(6c8bbd31) SHA1(63d1739a58a0d441ebdd543e3994984c433aedb4), ROM_SKIP(1) | ROM_BIOS(1))
	ROMX_LOAD("cbm-pc70c-bios-hi-v1.00.01-xxxxxx-00.bin", 0x00001, 0x10000, CRC(ef279cdd) SHA1(d250368b2f731e842d6f280a6134f1e38846874b), ROM_SKIP(1) | ROM_BIOS(1))
ROM_END

// Commodore Tower 386
ROM_START( comt386 )
	ROM_REGION(0x20000, "bios", 0)
	// Phoenix 80386 ROM BIOS PLUS Version 1.10 22 - Twinhead International Corporation
	ROM_LOAD16_BYTE( "cbm-t386-bios-lo-v1.1022c-.bin", 0x10000, 0x8000, CRC(6857777e) SHA1(e80dbffd3523c9a1b027f57138c55768fc8328a6))
	ROM_LOAD16_BYTE( "cbm-t386-bios-hi-v1.1022c-.bin", 0x10001, 0x8000, CRC(6a321a7e) SHA1(c350fb273522f742c6008deda00ed13947a269b7))
ROM_END

// Commodore Tower 486
ROM_START( comt486 )
	ROM_REGION(0x20000, "bios", 0)
	// 0: BIOS-String: 40-0500-DG1112-00101111-070791-SOLUTION-0 - 4D3FF Rev.D (092892)
	ROM_SYSTEM_BIOS(0, "v0", "Tower 486 V0")
	ROMX_LOAD( "cbm-t486dx-bios-v-xxxxxx-xx.bin", 0x10000, 0x10000, CRC(f51c0ca0) SHA1(2b08a606ae2f37b3e72d687f890d729a58fd3ccd), ROM_BIOS(0))
	// continuous chirps
	ROM_SYSTEM_BIOS(1, "v1", "Tower 486 V1")
	ROMX_LOAD( "cbm-t486dx-66-bios-v1.01-391566-02.bin", 0x10000, 0x10000, CRC(3d740698) SHA1(888f23d85b41c07e15e2811b76194cf478bc80cd), ROM_BIOS(1))
	// BIOS-String: 40-0103-001283-00101111-0606-SYM_486-0 - Commodore 486DX2-66 BIOS Version 1.03 391684-02
	ROM_SYSTEM_BIOS(2, "v2", "Tower 486 V2")
	ROMX_LOAD( "cbm-t486dx-66-bios-v1.03-391684-02.bin", 0x10000, 0x10000, CRC(13e8b04b) SHA1(dc5c84d228f802f7580b3f3b8e70cf8f74de5d79), ROM_BIOS(2))
	// BIOS-String: 40-0103-001283-00101111-060692-SYM_486-0 - Commodore 486DX-50 BIOS Version 1.03 391522-03
	ROM_SYSTEM_BIOS(3, "v3", "Tower 486 V3")
	ROMX_LOAD( "cbm-t486dx-50-bios-v1.03-.bin", 0x10000, 0x10000, CRC(e02bb928) SHA1(6ea121b214403390d382ca4685cfabcbcca1a28b), ROM_BIOS(3))
ROM_END


//**************************************************************************
//  80286 BIOS
//**************************************************************************

ROM_START( at )
	ROM_REGION(0x20000,"bios", 0)
	// 0: BIOS-String: ENET-1107-040990-K0 
	ROM_SYSTEM_BIOS(0, "ami211", "AMI 21.1") /*(Motherboard Manufacturer: Dataexpert Corp. Motherboard) (Neat 286 Bios, 82c21x Chipset ) (BIOS release date:: 09-04-1990)*/
	ROMX_LOAD( "ami211.bin",     0x10000, 0x10000,CRC(a0b5d269) SHA1(44db8227d35a09e39b93ed944f85dcddb0dd0d39), ROM_BIOS(0))
	// 1: BIOS-String: D286-0011-110387
	ROM_SYSTEM_BIOS(1, "at", "PC 286") /*(Motherboard Manufacturer: Unknown.) (BIOS release date:: 03-11-1987)*/
	ROMX_LOAD( "at110387.1", 0x10001, 0x8000, CRC(679296a7) SHA1(ae891314cac614dfece686d8e1d74f4763cf40e3),ROM_SKIP(1) | ROM_BIOS(1) )
	ROMX_LOAD( "at110387.0", 0x10000, 0x8000, CRC(65ae1f97) SHA1(91a29c7deecf7a9afbba330e64e0eee9aafee4d1),ROM_SKIP(1) | ROM_BIOS(1) )
	// 2: BIOS-String: S286-6181-101590-K0
	ROM_SYSTEM_BIOS(2, "ami206", "AMI C 206.1")  /*(Motherboard Manufacturer: Unknown.) (BIOS release date:: 15-10-1990)*/
	ROMX_LOAD( "amic206.bin",    0x10000, 0x10000,CRC(25a67c34) SHA1(91e9d8cdc2f1b40a601a23ceaff2189fd1245f3b), ROM_BIOS(2) )
	//3: BIOS-String: ENET-1230-043089-K0
	ROM_SYSTEM_BIOS(3, "amic21", "AMI C 21.1") /* (Motherboard Manufacturer: Unknown.) (Neat 286 Bios, 82c21x Chipset ) (BIOS release date:: 30-04-1989) */
	ROMX_LOAD( "amic21-2.bin",  0x10001, 0x8000, CRC(8ffe7752) SHA1(68215f07a170ee7bdcb3e52b370d470af1741f7e),ROM_SKIP(1) | ROM_BIOS(3) )
	ROMX_LOAD( "amic21-1.bin",  0x10000, 0x8000, CRC(a76497f6) SHA1(91b47d86967426945b2916cb40e76a8da2d31d54),ROM_SKIP(1) | ROM_BIOS(3) )
	// 4: Quadtel Enhanced 286 BIOS Version 3.04.02 - Headland HT101, HT102
	ROM_SYSTEM_BIOS(4, "ami101", "AMI HT 101.1") /* (Quadtel Enhanced 286 Bios Version 3.04.02) (BIOS release date:: 09/11/1989) */ 
	ROMX_LOAD( "amiht-h.bin",   0x10001, 0x8000, CRC(8022545f) SHA1(42541d4392ad00b0e064b3a8ccf2786d875c7c19),ROM_SKIP(1) | ROM_BIOS(4) )
	ROMX_LOAD( "amiht-l.bin",   0x10000, 0x8000, CRC(285f6b8f) SHA1(2fce4ec53b68c9a7580858e16c926dc907820872),ROM_SKIP(1) | ROM_BIOS(4) )
	// 5: BIOS-String: DH12-1211-061390-K0
	ROM_SYSTEM_BIOS(5, "ami121", "AMI HT 12.1") /* (BIOS release date:: 13-06-1990) */
	ROMX_LOAD( "ami2od86.bin",  0x10001, 0x8000, CRC(04a2cec4) SHA1(564d37a8b2c0f4d0e23cd1e280a09d47c9945da8),ROM_SKIP(1) | ROM_BIOS(5) )
	ROMX_LOAD( "ami2ev86.bin",  0x10000, 0x8000, CRC(55deb5c2) SHA1(19ce1a7cc985b5895c585e39211475de2e3b0dd1),ROM_SKIP(1) | ROM_BIOS(5) )
	// 6: BIOS-String: DH12-1120-061390-K0
	ROM_SYSTEM_BIOS(6, "ami122", "AMI HT 12.2") /* (BIOS release date:: 13-06-1990) */
	ROMX_LOAD( "ami2od89.bin",  0x10001, 0x8000, CRC(7c81bbe8) SHA1(a2c7eca586f6e2e76b9101191e080a1f1cb8b833),ROM_SKIP(1) | ROM_BIOS(6) )
	ROMX_LOAD( "ami2ev89.bin",  0x10000, 0x8000, CRC(705d36e0) SHA1(0c9cfb71ced4587f109b9b6dfc2a9c92302fdb99),ROM_SKIP(1) | ROM_BIOS(6) )
	// 7: BIOS-String: DH12-1112-061390-K0
	ROM_SYSTEM_BIOS(7, "ami123", "AMI HT 12.3") /*(Motherboard Manufacturer: Aquarius Systems USA Inc.) (BIOS release date:: 13-06-1990)*/
	ROMX_LOAD( "ht12h.bin",     0x10001, 0x8000, CRC(db8b471e) SHA1(7b5fa1c131061fa7719247db3e282f6d30226778),ROM_SKIP(1) | ROM_BIOS(7) )
	ROMX_LOAD( "ht12l.bin",     0x10000, 0x8000, CRC(74fd178a) SHA1(97c8283e574abbed962b701f3e8091fb82823b80),ROM_SKIP(1) | ROM_BIOS(7) )
	// 8: (BIOS release date:: 07-07-1991)
	ROM_SYSTEM_BIOS(8, "ami181", "AMI HT 18.1") /* not a bad dump, sets unknown probably chipset related registers at 0x1e8 before failing post */
	ROMX_LOAD( "ht18.bin",     0x10000, 0x10000, CRC(f65a6f9a) SHA1(7dfdf7d243f9f645165dc009c5097dd515f86fbb), ROM_BIOS(8) )
	// 9: (BIOS release date:: 07-07-1991)
	ROM_SYSTEM_BIOS(9, "amiht21", "AMI HT 21.1") /* as above */
	ROMX_LOAD( "ht21e.bin",    0x10000, 0x10000, CRC(e80f7fed) SHA1(62d958d98c95e9e4d1b290a6c1054ae98770f276), ROM_BIOS(9) )
	// 10: BIOS-String: D286-1430-040990-K0
	ROM_SYSTEM_BIOS(10, "amip1", "AMI P.1") /*(Motherboard Manufacturer: Unknown.) (BIOS release date:: 09-04-1990)*/
	ROMX_LOAD( "poisk-h.bin",   0x10001, 0x8000, CRC(83fd3f8c) SHA1(ca94850bbd949b97b11710629886b0ee69489a81),ROM_SKIP(1) | ROM_BIOS(10) )
	ROMX_LOAD( "poisk-l.bin",   0x10000, 0x8000, CRC(0b2ed291) SHA1(bb51a3f317cf4d429a6cfb44a46ca0ac39d9aaa7),ROM_SKIP(1) | ROM_BIOS(10) )
	// 11: Award 286 Modular BIOS Version 3.11 - WINBOND
	ROM_SYSTEM_BIOS(11, "aw201", "Award 201") /* (BIOS release date:: 21-11-1990) */
	ROMX_LOAD( "83201-5h.bin",  0x10001, 0x8000, CRC(968d1fc0) SHA1(dc4122a6c696f0b43e7894dc1b669346eed755d5),ROM_SKIP(1) | ROM_BIOS(11) )
	ROMX_LOAD( "83201-5l.bin",  0x10000, 0x8000, CRC(bf50a89a) SHA1(2349a1db6017a7fb0673e99d3680c8753407be8d),ROM_SKIP(1) | ROM_BIOS(11) )
	// 12: Award 286 Modular BIOS V3.03 NFS 11/10/87" - T.M.C
	ROM_SYSTEM_BIOS(12, "aw303", "Award 303 NFS") /* (BIOS release date:: 15-11-1985) */
	ROMX_LOAD( "aw303-hi.bin",  0x18001, 0x4000, CRC(78f32d7e) SHA1(1c88398fb171b33b7e6191bad63704ae85bfed8b), ROM_SKIP(1) | ROM_BIOS(12) )
	ROMX_LOAD( "aw303-lo.bin",  0x18000, 0x4000, CRC(3d2a70c0) SHA1(1329113bec514ed2a6d803067b1132744ef534dd), ROM_SKIP(1) | ROM_BIOS(12) )
	// 13: Award 286 Modular BIOS Version 3.03GS
	ROM_SYSTEM_BIOS(13, "aw303gs", "Award 303GS") /* (BIOS release date:: 15-11-1985) */
	ROMX_LOAD( "aw303gs-hi.bin",  0x18001, 0x4000, CRC(82392e18) SHA1(042453b7b29933a1b72301d21fcf8fa6b293c9c9), ROM_SKIP(1) | ROM_BIOS(13) )
	ROMX_LOAD( "aw303gs-lo.bin",  0x18000, 0x4000, CRC(a4cf8ba1) SHA1(b73e34be3b2754aaed1ac06471f4441fea06c67c), ROM_SKIP(1) | ROM_BIOS(13) )
	// 14: BIOS-String: D286-6069-040990-K0
	ROM_SYSTEM_BIOS(14, "ami_200960", "AMI 200960") /* (BIOS release date:: 09-04-1990 */
	ROMX_LOAD( "ami_286_bios_sn200960_even.bin", 0x10000, 0x8000, CRC(67745815) SHA1(ca6886c7a0716a92a8720fc71ff2d95328c467a5), ROM_SKIP(1) | ROM_BIOS(14) )
	ROMX_LOAD( "ami_286_bios_sn200960_odd.bin", 0x10001, 0x8000, CRC(360a5f73) SHA1(1b1980fd99779d0cdc4764928a641e081b35ee9f), ROM_SKIP(1) | ROM_BIOS(14) )
	// 15: Award 286 Modular BIOS Version 3.03 - GCH
	ROM_SYSTEM_BIOS(15, "ev1815303", "Everex EV-1815 V3.03")  /* (BIOS release date:: 15-11-1985) */
	ROMX_LOAD( "award_v3.03_ev1815_even.bin", 0x18000, 0x4000, CRC(dd64bdd6) SHA1(b3108b692d2aa03701ac894602e9418ae0779702), ROM_SKIP(1) | ROM_BIOS(15) )
	ROMX_LOAD( "award_v3.03_ev1815_odd.bin", 0x18001, 0x4000, CRC(29f023fb) SHA1(873561bb7087483c0c763ef9cd32c1adf0f7cb5e), ROM_SKIP(1) | ROM_BIOS(15) )
	// 16: Award 286 Modular BIOS Version 3.03GS 
	ROM_SYSTEM_BIOS(16, "ev1815303gs", "Everex EV-1815 V3.03GS") /* (BIOS release date:: 15-11-1985) */
	ROMX_LOAD( "award_v3.03gs_ev1815_even.bin", 0x10000, 0x8000, CRC(59489ec2) SHA1(b3c13ba53d4c4ee75a15703236a748121102ce84), ROM_SKIP(1) | ROM_BIOS(16) )
	ROMX_LOAD( "award_v3.03gs_ev1815_odd.bin", 0x10001, 0x8000, CRC(5bcd9421) SHA1(f32e5a39da593c6982f964fb05b0802d54c3de45), ROM_SKIP(1) | ROM_BIOS(16) )
	// 17: BIOS-String: DVL2-1160-040990-K0
	ROM_SYSTEM_BIOS(17, "dvl2", "DVL2") /* (BIOS release date:: 09-04-1990) */
	ROMX_LOAD( "ami_dvl2-1160-040990-k8_even.bin", 0x10000, 0x8000, CRC(86093016) SHA1(f60b2679c8c23a34bdd64f25d83cb5a5a337bd57), ROM_SKIP(1) | ROM_BIOS(17) )
	ROMX_LOAD( "ami_dvl2-1160-040990-k8_odd.bin", 0x10001, 0x8000, CRC(4e1c944a) SHA1(0763a0a1002baced071fea301f627d2e550878b8), ROM_SKIP(1) | ROM_BIOS(17) )
	// 18: DTK 286 BIOS Ver 3.18 07/01/88
	ROM_SYSTEM_BIOS(18, "dtk318", "DTK v3.18") /* (BIOS release date:: 11-03-1986) */
	ROMX_LOAD( "dtk_286_bios_ver3.18.bin", 0x18000, 0x8000, CRC(b4b8b59a) SHA1(73c12222f5003fdc8bbfee178b20c8dda2fe5cb4), ROM_BIOS(18) )
	// 19: BIOS-String: D286-6061-040990-K0
	ROM_SYSTEM_BIOS(19, "d286-k0", "AMI D286-K0") /* (BIOS release date:: 09-04-1990) */
	ROMX_LOAD( "ami_d286-6061-040990-k0.bin", 0x10000, 0x10000, CRC(1679c1b5) SHA1(9d95da3b40c5f13d096823f383aba099b3a77183), ROM_BIOS(19) )
	// 20: BIOS-String: S286-1169-030389-K0 for ACHIEVE MICROSYSTEMS
	ROM_SYSTEM_BIOS(20, "s286-k0", "Achieve S286-K0") /* (BIOS release date:: 03-03-1989) */
	ROMX_LOAD( "ach_s286-1169-030389-k0_ev.bin", 0x10000, 0x8000, CRC(58f1f29c) SHA1(42f5189d12b75fad5e53ff472b4603c6fcbd46cd), ROM_SKIP(1) | ROM_BIOS(20) )
	ROMX_LOAD( "ach_s286-1169-030389-k0_od.bin", 0x10001, 0x8000, CRC(84bfc180) SHA1(2daa51b09c449712c9a737793b83754951e53a41), ROM_SKIP(1) | ROM_BIOS(20) )
	// 21: Award BIOS Version 3.01B
	ROM_SYSTEM_BIOS(21, "awa301b", "Award BIOS Version 3.01B") /* (BIOS release date:: 01-01-1988) */
	ROMX_LOAD( "aw286lo.rom", 0x18000, 0x4000, CRC(5afbb4a2) SHA1(513fd75d90720820484fdd280e4a6c22a0ef238c), ROM_SKIP(1) | ROM_BIOS(21) )
	ROMX_LOAD( "aw286hi.rom", 0x18001, 0x4000, CRC(b2551251) SHA1(0c8bd12a3d54ae6d2ad0210b9ca4deca94be10ed), ROM_SKIP(1) | ROM_BIOS(21) )
	// 22: no screen display
	ROM_SYSTEM_BIOS(22, "awa286", "awa286") /* (BIOS release date:: 21-11-1990) */
	ROMX_LOAD( "awd286lo.rom", 0x18000, 0x4000, CRC(d1a9c01f) SHA1(9123c6f76d85725036a0f8b9c6480142abea478f), ROM_SKIP(1) | ROM_BIOS(22) )
	ROMX_LOAD( "awd286hi.rom", 0x18001, 0x4000, CRC(b0bde4cc) SHA1(9c3fd2c0f69dde905d4e8f3be421374ef99682df), ROM_SKIP(1) | ROM_BIOS(22) )
	// 23: DTK 286 BIOS Ver. 3.01 07/24/87 - no screen display
	ROM_SYSTEM_BIOS(23, "dtk286", "dtk286") /* (BIOS release date:: 11-03-1986) */ 
	ROMX_LOAD( "dtk286lo.rom", 0x18000, 0x4000, CRC(dfc70856) SHA1(39158e6ed50236d371277631e77d06f77fb0531e), ROM_SKIP(1) | ROM_BIOS(23) )
	ROMX_LOAD( "dtk286hi.rom", 0x18001, 0x4000, CRC(a98fc743) SHA1(fb9e330148cb5584f61c1febea71c53b6f9d61b7), ROM_SKIP(1) | ROM_BIOS(23) )
	// 24: Phoenix 80286 ROM BIOS Version 3.07 (R04)
	ROM_SYSTEM_BIOS(24, "mitph307", "Mitac Phoenix v3.07") /* (BIOS release date:: 30-07-1987) */
	ROMX_LOAD( "mitac_phoenix_v3.07_even.bin", 0x10000, 0x8000, CRC(1c4becc9) SHA1(bfdea3f2a248312ed8cf4765a1a7dc1a2f7cecd8), ROM_SKIP(1) | ROM_BIOS(24) )
	ROMX_LOAD( "mitac_phoenix_v3.07_odd.bin", 0x10001, 0x8000, CRC(3ee16ed1) SHA1(b77e18e10e9187a01cb55c05b2a6e5311981ab56), ROM_SKIP(1) | ROM_BIOS(24) )
	// 25: BIOS-String: Pyramid Software Development Personal Computer AT Bios Version 2.14
	ROM_SYSTEM_BIOS(25, "precise", "Precise")  /* (no regular BIOS release date) */
	ROMX_LOAD( "precise 860407_low.bin", 0x10000, 0x8000, CRC(d839c074) SHA1(473ca7b42914ce12f2d6c91afb0b2c2e65194489), ROM_SKIP(1) | ROM_BIOS(25) )
	ROMX_LOAD( "precise 860407_high.bin", 0x10001, 0x8000, CRC(b5e13c54) SHA1(07f5806fb53d0cb7ef7b54312fd6aa163d58b9a5), ROM_SKIP(1) | ROM_BIOS(25) )
	// ROM_LOAD( "precise_860407_keyboard_mcu.bin", 0x0000, 0x800, CRC(d1faad5c) SHA1(cb315a3da632c969012c298bb8e1cf8883b70501))
	// 26:  Access Methods Inc. for Flying Triumph (AMI before they became American Megatrends) - BIOS String: Ref. no. 1406-061296
	// complains about "Channel-2 timer not funcional but boots
	ROM_SYSTEM_BIOS(26, "ami_ft", "AMI Flying Triumph") /* (BIOS release date:: 12-06-1986) */
	ROMX_LOAD( "286_access_methods_rom2_32k.bin", 0x10000, 0x8000, CRC(749c65af) SHA1(7c6e9e217afe020b7b36785549fdbfb89de8f872), ROM_SKIP(1) | ROM_BIOS(26) )
	ROMX_LOAD( "286_access_methods_rom4_32k.bin", 0x10001, 0x8000, CRC(0f15581a) SHA1(2a22635f30388ca371f0f1f31652cfa647bb322d), ROM_SKIP(1) | ROM_BIOS(26) )
	// 27: BIOS ROMs are marked TCI, Award 286 Modular BIOS Version 3.03HLS
	// complains about "refresh timing error, but works
	ROM_SYSTEM_BIOS(27, "tci_suntac", "tci_suntac") /* (BIOS release date:: 15-11-1985) */
	ROMX_LOAD( "suntac_80286_lo.bin", 0x18000, 0x4000, CRC(f7bf6c49) SHA1(d8e813c264008f096006f46b90769c0927e44da9), ROM_SKIP(1) | ROM_BIOS(27) )
	ROMX_LOAD( "suntac_80286_hi.bin", 0x18001, 0x4000, CRC(5f382e78) SHA1(8ba222df9d7028513e37978598d8139906e8834c), ROM_SKIP(1) | ROM_BIOS(27) )
	// 28: 286 board with Headland GC101A-PC; GC102-PC chipset and Phoenix BIOS 2493119, ISA8: 2, ISA16: 5
	ROM_SYSTEM_BIOS(28, "head_ph_1", "Headland/Phoenix #1") // Phoenix 80286 ROM BIOS PLUS Version 3.10.21 ((BIOS release date:: 15-01-1988)
	ROMX_LOAD( "286-headland-lo_32k.bin", 0x10000, 0x8000, CRC(21b68bed) SHA1(1e4acda50b12ad463c169ba615805f5dcf257b18), ROM_SKIP(1) | ROM_BIOS(28) )
	ROMX_LOAD( "286-headland-hi_32k.bin", 0x10001, 0x8000, CRC(04c8ab12) SHA1(b46c14528aca15464e4050b423c2f621a4313a85), ROM_SKIP(1) | ROM_BIOS(28) )
	// 29: 286 board with Headland Headland HT12/A chipset, one ROM market IQS, Phoenix BIOS 3479808 - ISA8: 1, ISA16: 6
	ROM_SYSTEM_BIOS(29, "head_ph_2", "Headland/Phoenix #2") // Phoenix BIOS A286 Version 1.01 - BIOS ID JLI01101 - IT9109 - Reference ID 01 - (BIOS release date:: 19-04-1990)
	ROMX_LOAD( "286-headland-iqs-lo_32k.bin", 0x10000, 0x8000, CRC(60424e9d) SHA1(aa813bf48939fe7fcbbfec3133e702bfdff6234e), ROM_SKIP(1) | ROM_BIOS(29) )
	ROMX_LOAD( "286-headland-iqs-hi_32k.bin", 0x10001, 0x8000, CRC(e56212e0) SHA1(2441845d632d19adc0592e094beb5ec1fbe074f6), ROM_SKIP(1) | ROM_BIOS(29) )
	// 30: MS-0010-2 - Phoenix ROM BIOS Version 3.06 
	ROM_SYSTEM_BIOS(30, "ms-0010-2", "MS-0010-2") /* (BIOS release date:: 19-01-1987) (ISA8: 3, ISA16: 5) */
	ROMX_LOAD( "286-ms0010-2-lo_32k.bin", 0x10000, 0x8000, CRC(2c381474) SHA1(94b9825d412ea39d67857102a0375852b349fcd6), ROM_SKIP(1) | ROM_BIOS(30) )
	ROMX_LOAD( "286-ms0010-2-hi_32k.bin", 0x10001, 0x8000, CRC(4fdb8c64) SHA1(c2e7f88f0ac97ee5eed0c97864b7f1810e99ea26), ROM_SKIP(1) | ROM_BIOS(30) )
	// 31: MG Products (Japanese) - Chipset: VLSI VL82C102A; VLSI VL82C101B; VLSI VL82C104; VLSI VL82C103A; VLSI VL82C100; (VLSI 8908BT; 8906BT; 8852BT; 8907BT; 8906BT)
	// BIOS: AMI 286 BIOS+ - BIOS-String: D286-9987-092588-K0 - ISA8: 2, ISA16: 8
	ROM_SYSTEM_BIOS(31, "286vlsij", "Japanese 286 VLSI") /* (BIOS release date:: 25-09-1988) (ISA8: 3, ISA16: 5) */
	ROMX_LOAD( "286-vlsi_japan-2-even_32k.bin", 0x10000, 0x8000, CRC(e3e64cbc) SHA1(5259e3c8686f2239a5fb0dc38aa80380ef9ec5fa), ROM_SKIP(1) | ROM_BIOS(31) )
	ROMX_LOAD( "286-vlsi_japan-2-odd_32k.bin", 0x10001, 0x8000, CRC(aa533f39) SHA1(d88c7d4029a283b94b99e2017d29fbf9eb9105b1), ROM_SKIP(1) | ROM_BIOS(31) )
	// 32: CMP enterprise CO.LTD. Phoenix 80286 ROM BIOS Version 3.00
	ROM_SYSTEM_BIOS(32, "cmpa286", "CPM A286") /* (Chipset Acer (ALi) M1207-12) (BIOS release date:: 01-09-1986) (ISA8: 2, ISA16: 6) */ 
	ROMX_LOAD( "286-a286-even_16k.bin", 0x18000, 0x4000, CRC(30809487) SHA1(413de43ca7e1930cdf3c006718d8baf743a9ff1e), ROM_SKIP(1) | ROM_BIOS(32) )
	ROMX_LOAD( "286-a286-odd_16k.bin", 0x18001, 0x4000, CRC(3a11aacf) SHA1(23185531ae10912b974048d3607b563e55d3fa96), ROM_SKIP(1) | ROM_BIOS(32) )
	// 33: AL-6410 (found online, no markings on the board itself), Chipset: Chips P82A204, P82A203, P82A205, P82C201, P82C202
	ROM_SYSTEM_BIOS(33, "al6410", "AL-6410") /* (BIOS-String: D286-1103-110387-K0) (BIOS release date:: 03-11-1987) (ISA8: 2, ISA16: 6) */ 
	ROMX_LOAD( "al-6410_ami_bios_low.bin", 0x10000, 0x8000, CRC(50c4e121) SHA1(5f9c27aabdc6bb810e90bced2053b7c21c4994dd), ROM_SKIP(1) |  ROM_BIOS(33) )
	ROMX_LOAD( "al-6410_ami_bios_high.bin", 0x10001, 0x8000, CRC(a44be083) SHA1(99f73d7ceb315eb3770c94d90228f8859cadc610), ROM_SKIP(1) | ROM_BIOS(33) )		
	// 34: AT SYSTEM 6M/8M/10M - Chipset: Chips P82A205; P82C201; P82A203; P82A204
	ROM_SYSTEM_BIOS(34, "at6m8m10m", "AT SYSTEM 6M/8M/10M") /* (BIOS release date:: 04-02-1987) */
	ROMX_LOAD( "286-at system 6m8m10m-l_32k.bin", 0x10000, 0x8000, CRC(37e0e1c1) SHA1(f5cd17658554a73bb86c5c8e630dac3e34b38e51), ROM_SKIP(1) | ROM_BIOS(34) )
	ROMX_LOAD( "286-at system 6m8m10m-r_32k.bin", 0x10001, 0x8000, CRC(c672efff) SHA1(7224bb6b4d25ef34bc0aa9d7c450baf9b47fd917), ROM_SKIP(1) | ROM_BIOS(34) )
ROM_END

ROM_START( atvga )
	ROM_REGION(0x20000,"bios", 0)
	// 0: BIOS-String: 20-0001-001223-00101111-050591-KB-8042--0
	ROM_SYSTEM_BIOS(0, "vl82c", "VL82C311L-FC4")/*(Motherboard Manufacturer: Biostar Microtech Corp.) (BIOS release date: 05-05-1991)*/
	ROMX_LOAD( "2vlm001.bin",     0x10000, 0x10000, CRC(f34d800a) SHA1(638aca592a0e525f957beb525e95ca666a994ee8), ROM_BIOS(0) )
	// 1: same as BIOS '0' in at
	ROM_SYSTEM_BIOS(1, "ami211", "AMI 21.1") /*(Motherboard Manufacturer: Dataexpert Corp. Motherboard) (Neat 286 Bios, 82c21x Chipset ) (BIOS release date:: 09-04-1990)*/
	ROMX_LOAD( "ami211.bin",     0x10000, 0x10000,CRC(a0b5d269) SHA1(44db8227d35a09e39b93ed944f85dcddb0dd0d39), ROM_BIOS(1))
	// 2: same as BIOS '2' in at
	ROM_SYSTEM_BIOS(2, "ami206", "AMI C 206.1") /*(Motherboard Manufacturer: Unknown.) (BIOS release date:: 15-10-1990)*/
	ROMX_LOAD( "amic206.bin",    0x10000, 0x10000,CRC(25a67c34) SHA1(91e9d8cdc2f1b40a601a23ceaff2189fd1245f3b), ROM_BIOS(2) )
	// 3: same as BIOS '3' in at
	ROM_SYSTEM_BIOS(3, "amic21", "AMI C 21.1")
	ROMX_LOAD( "amic21-2.bin",  0x10001, 0x8000, CRC(8ffe7752) SHA1(68215f07a170ee7bdcb3e52b370d470af1741f7e),ROM_SKIP(1) | ROM_BIOS(3) )
	ROMX_LOAD( "amic21-1.bin",  0x10000, 0x8000, CRC(a76497f6) SHA1(91b47d86967426945b2916cb40e76a8da2d31d54),ROM_SKIP(1) | ROM_BIOS(3) )
	// 4: same as BIOS '4' in at
	ROM_SYSTEM_BIOS(4, "ami101", "AMI HT 101.1") /* Quadtel Enhanced 286 Bios Version 3.04.02 */
	ROMX_LOAD( "amiht-h.bin",   0x10001, 0x8000, CRC(8022545f) SHA1(42541d4392ad00b0e064b3a8ccf2786d875c7c19),ROM_SKIP(1) | ROM_BIOS(4) )
	ROMX_LOAD( "amiht-l.bin",   0x10000, 0x8000, CRC(285f6b8f) SHA1(2fce4ec53b68c9a7580858e16c926dc907820872),ROM_SKIP(1) | ROM_BIOS(4) )
	// 5: same as BIOS '5' in at
	ROM_SYSTEM_BIOS(5, "ami121", "AMI HT 12.1")
	ROMX_LOAD( "ami2od86.bin",  0x10001, 0x8000, CRC(04a2cec4) SHA1(564d37a8b2c0f4d0e23cd1e280a09d47c9945da8),ROM_SKIP(1) | ROM_BIOS(5) )
	ROMX_LOAD( "ami2ev86.bin",  0x10000, 0x8000, CRC(55deb5c2) SHA1(19ce1a7cc985b5895c585e39211475de2e3b0dd1),ROM_SKIP(1) | ROM_BIOS(5) )
	// 6: same as BIOS '6' in at
	ROM_SYSTEM_BIOS(6, "ami122", "AMI HT 12.2")
	ROMX_LOAD( "ami2od89.bin",  0x10001, 0x8000, CRC(7c81bbe8) SHA1(a2c7eca586f6e2e76b9101191e080a1f1cb8b833),ROM_SKIP(1) | ROM_BIOS(6) )
	ROMX_LOAD( "ami2ev89.bin",  0x10000, 0x8000, CRC(705d36e0) SHA1(0c9cfb71ced4587f109b9b6dfc2a9c92302fdb99),ROM_SKIP(1) | ROM_BIOS(6) )
	// 7: same as BIOS '7' in at
	ROM_SYSTEM_BIOS(7, "ami123", "AMI HT 12.3") /*(Motherboard Manufacturer: Aquarius Systems USA Inc.) (BIOS release date:: 13-06-1990)*/
	ROMX_LOAD( "ht12h.bin",     0x10001, 0x8000, CRC(db8b471e) SHA1(7b5fa1c131061fa7719247db3e282f6d30226778),ROM_SKIP(1) | ROM_BIOS(7) )
	ROMX_LOAD( "ht12l.bin",     0x10000, 0x8000, CRC(74fd178a) SHA1(97c8283e574abbed962b701f3e8091fb82823b80),ROM_SKIP(1) | ROM_BIOS(7) )
	// 8: same as BIOS '8' in at
	ROM_SYSTEM_BIOS(8, "ami181", "AMI HT 18.1") /* not a bad dump, sets unknown probably chipset related registers at 0x1e8 before failing post */
	ROMX_LOAD( "ht18.bin",     0x10000, 0x10000, CRC(f65a6f9a) SHA1(7dfdf7d243f9f645165dc009c5097dd515f86fbb), ROM_BIOS(8) )
	// 9: same as BIOS '9' in at
	ROM_SYSTEM_BIOS(9, "amiht21", "AMI HT 21.1") /* as above */
	ROMX_LOAD( "ht21e.bin",    0x10000, 0x10000, CRC(e80f7fed) SHA1(62d958d98c95e9e4d1b290a6c1054ae98770f276), ROM_BIOS(9) )
	// 10: same as BIOS '10' in at
	ROM_SYSTEM_BIOS(10, "amip1", "AMI P.1") /*(Motherboard Manufacturer: Unknown.) (BIOS release date:: 09-04-1990)*/
	ROMX_LOAD( "poisk-h.bin",   0x10001, 0x8000, CRC(83fd3f8c) SHA1(ca94850bbd949b97b11710629886b0ee69489a81),ROM_SKIP(1) | ROM_BIOS(10) )
	ROMX_LOAD( "poisk-l.bin",   0x10000, 0x8000, CRC(0b2ed291) SHA1(bb51a3f317cf4d429a6cfb44a46ca0ac39d9aaa7),ROM_SKIP(1) | ROM_BIOS(10) )
	// 11: BIOS-String: DG22-1131-040990-K11 / 286-BIOS G2 V1.1 6-28-90
	ROM_SYSTEM_BIOS(11, "ami1131", "AMI-1131") /*(Motherboard Manufacturer: Elitegroup Computer Co., Ltd.) (BIOS release date:: 09-04-1990)*/
	ROMX_LOAD( "2hlm003h.bin",   0x10001, 0x8000, CRC(2babb42b) SHA1(3da6538f44b434cdec0cbdddd392ccfd34666f06),ROM_SKIP(1) | ROM_BIOS(11) )
	ROMX_LOAD( "2hlm003l.bin",   0x10000, 0x8000, CRC(317cbcbf) SHA1(1adad6280d8b07c2921fc5fc13ecaa10e6bfebdc),ROM_SKIP(1) | ROM_BIOS(11) )
	// 12: same as BIOS '1' in at
	ROM_SYSTEM_BIOS(12, "at", "PC 286") /*(Motherboard Manufacturer: Unknown.) (BIOS release date:: 03-11-1987)*/
	ROMX_LOAD( "at110387.1", 0x10001, 0x8000, CRC(679296a7) SHA1(ae891314cac614dfece686d8e1d74f4763cf40e3),ROM_SKIP(1) | ROM_BIOS(12) )
	ROMX_LOAD( "at110387.0", 0x10000, 0x8000, CRC(65ae1f97) SHA1(91a29c7deecf7a9afbba330e64e0eee9aafee4d1),ROM_SKIP(1) | ROM_BIOS(12) )
	// 13
	ROM_SYSTEM_BIOS(13, "bravo", "AST Bravo/286") // fails with keyboard controller test, probably expects specific kbdc rom
	ROMX_LOAD( "107000-704.bin", 0x10000, 0x8000, CRC(94faf87e) SHA1(abaafa6c2ae9b9fba95b244dcbcc1c752ac6c0a0),ROM_SKIP(1) | ROM_BIOS(13) )
	ROMX_LOAD( "107000-705.bin", 0x10001, 0x8000, CRC(e1263c1e) SHA1(b564f1043ef45ecbdf4f06bb500150ad992c2931),ROM_SKIP(1) | ROM_BIOS(13) )
ROM_END

// Chips & Technologies CS8221 NEAT chipset: P82C211 + P82C212 + P82C215 + P82C206
ROM_START( neat )
	ROM_REGION(0x20000,"bios", 0)
	// 0: BIOS-String: ENET-1131-030389-K0
	ROM_SYSTEM_BIOS(0, "neat286", "NEAT 286")
	ROMX_LOAD( "at030389.0", 0x10000, 0x8000, CRC(4c36e61d) SHA1(094e8d5e6819889163cb22a2cf559186de782582),ROM_SKIP(1) | ROM_BIOS(0))
	ROMX_LOAD( "at030389.1", 0x10001, 0x8000, CRC(4e90f294) SHA1(18c21fd8d7e959e2292a9afbbaf78310f9cad12f),ROM_SKIP(1) | ROM_BIOS(0))
	// 1: Phoenix 80286 ROM BIOS PLUS Version 3.10 12 - High Performance 286 ROM BIOS Ver C.12
	ROM_SYSTEM_BIOS(1, "pb800", "Packard Bell PB800")
	ROMX_LOAD( "3.10.12-1.bin", 0x10001, 0x8000, CRC(e6bb54c5) SHA1(fa5a376dd44696c78dcc8994e18938b5e1b3e45a),ROM_SKIP(1) | ROM_BIOS(1))
	ROMX_LOAD( "3.10.12-2.bin", 0x10000, 0x8000, CRC(bde46933) SHA1(c7221192f48d6f2f5b773c3c7d2a52b635cb473e),ROM_SKIP(1) | ROM_BIOS(1))
	// 2: DTK Corp. 286 Computer - DTK 286 Chipset ROM BIOS Version 3.26 - #24062890N
	ROM_SYSTEM_BIOS(2, "ptm1632c", "UNIT PTM1632C DTK V.3.26")
	ROMX_LOAD( "ptm1632c_l.bin", 0x10000, 0x8000, CRC(df0bc27c) SHA1(f94e2decd13c285c23b6a61c035cab88fa00ba6e), ROM_SKIP(1) | ROM_BIOS(2))
	ROMX_LOAD( "ptm1632c_h.bin", 0x10001, 0x8000, CRC(a80136e0) SHA1(5edc2d387efb42cf70361197de808ce1b06d8aec), ROM_SKIP(1) | ROM_BIOS(2))
	// 3: BIOS-String: DTK Corp. 286 COMPUTER - (C) DTK NEAT BIOS Ver 3.25N2 06/06/89 - DTK PTM-1233C - Chipset: P82C211; P82C212B; P82C215 - BIOS: dtk 286E 8864 - IS8: 3 - ISA16: 5
	ROM_SYSTEM_BIOS(3, "ptm1233c", "DTK PTM-1233C")
	ROMX_LOAD( "286-dtk ptm-1233c-low_32k.bin", 0x10000, 0x8000, CRC(8909164c) SHA1(51978929a690746c1956ca6b1f0412777dc5d35b), ROM_SKIP(1) | ROM_BIOS(3) )
	ROMX_LOAD( "286-dtk ptm-1233c-high_32k.bin", 0x10001, 0x8000, CRC(9105968c) SHA1(737d4df8040655315a648fed8a8d574f39e7dc35), ROM_SKIP(1) | ROM_BIOS(3) )
ROM_END


//**************************************************************************
//  80286 motherboard
//**************************************************************************

// Octek Fox II - Chipset: Headland HT12/A - BIOS String:
ROM_START( o286foxii)
	ROM_REGION(0x20000, "bios", 0)
	ROMX_LOAD( "286-fox2-even_32k.bin", 0x10000, 0x8000, CRC(54dc119f) SHA1(4bc543beef0d2201fa20eac90a0a6ca38ebf0dbf), ROM_SKIP(1))
	ROMX_LOAD( "286-fox2-odd_32k.bin", 0x10001, 0x8000, CRC(e5db7775) SHA1(2bd0572b9f7c76eff51375b551586ca8484e2a74), ROM_SKIP(1))
ROM_END

// Unknown 80C286 motherboard (4 SIMM, 6 16-bit ISA)
// SARC RC2015; HM6818P; 82C042 or JETkey Keyboard BIOS; 1MB onboard RAM (8x LH64256AD-80)
ROM_START( sarcpc )
	ROM_REGION(0x20000,"bios", 0) // 27C512
	// BIOS-String: 20-0300-00834-00101111-050591-SARC286 / [80286 Standard System 2V1]
	//ROM_SYSTEM_BIOS(0, "sarcrev12", "SARC Rev. 1.2")
	ROM_LOAD( "sarcrev12.bin", 0x10000, 0x10000, CRC(1c5e3f2d) SHA1(1fcc8b1b9d9383467223dd41e420f9352beca654) )
ROM_END

// Toptek 286 Turbo (board name somewhat uncertain; 5x 8-bit ISA, 3x 16-bit ISA, 2 banks of onboard RAM + 2 banks expansion RAM)
// VLSI VL82C100 + VL82C101B + VL82C102A + VL82C103A + VL82C104; MC146818 or HM6818P RTC; unidentified keyboard controller
ROM_START( toptek286 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: D286-1295-091589-K0
	// Original BIOS64 dump split into even and odd bytes based on available PCB info
	ROM_LOAD16_BYTE( "toptek_vlsi_even.bin", 0x10000, 0x8000, CRC(f35465e8) SHA1(c85afc2168e355120c63b68d5c11fce7770fe1b7) )
	ROM_LOAD16_BYTE( "toptek_vlsi_odd.bin", 0x10001, 0x8000, CRC(b7272729) SHA1(686c976b9b7989862846a79d00f1f9116f03bc17) )
ROM_END

// Everex EV-1806 (6 16-bit ISA, 1 8-bit ISA)
// Everex IC-00121-0 + IC-00122-0; CHIPS P82C206; Intel 8272A(?); 146818A RTC
ROM_START( ev1806 )
	ROM_REGION(0x20000, "bios", 0)
	ROMX_LOAD( "everex_ev-1806_rev-f1a-21_even_u62.bin", 0x18000, 0x4000, CRC(7364e49b) SHA1(e8f5f41514005da0e36792e009cf3eae51c19c20), ROM_SKIP(1) )
	ROMX_LOAD( "everex_ev-1806_rev-f1a-21_odd_u61.bin", 0x18001, 0x4000, CRC(05c87bf7) SHA1(8c2243d9ee3d2af1517dc1134a22a7d1ed11262f), ROM_SKIP(1) )
ROM_END

// Unknown motherboard (similar layout to LM-103S; 4 SIMM, 5 16-bit ISA, 2 8-bit ISA)
// Headland HT12/A; HM6818A RTC; AMI K053770 keyboard BIOS
// Jumpers at right edge of board are labeled "KEYLOCK" (J6), "SPEAKER" (J7), "TURBO LED" (J8), "TURBO S.W." (J9), "RESET" (J10)
// XTALs X3 and X4 in top right corner (behind 80C287) are both unpopulated
ROM_START( ht286 )
	ROM_REGION(0x20000, "bios", 0)
	//ROM_SYSTEM_BIOS(0, "dh12-k0", "AMI DH12-K0")
	// BIOS-String: DH12-1343-061390-K0
	// Original BIOS64 dump split into even and odd bytes (matches another dump of the same BIOS)
	// ROM at U6 has sticker with AMI 253770 label; "BB012" at U8 is probably other half of BIOS, though not clear which half is which
	ROM_LOAD16_BYTE( "286_headland_even.bin", 0x10000, 0x8000, CRC(a2530914) SHA1(1aca289240caa6d4bf811d301c338c157b6902a1) )
	ROM_LOAD16_BYTE( "286_headland_odd.bin", 0x10001, 0x8000, CRC(b5f69002) SHA1(ee9ceef1fc7a328ee82006cd504e72e16f21b3c8) )
ROM_END

// KT216WB5-HI Rev.2 (1 8-bit ISA, 5 16-bit ISA)
// Winbond W83C201P + W83C202AP + W83C203AP + W83C204P + W83C205AP; MC146818AP RTC; JETkey keyboard BIOS
ROM_START( kt216wb5 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: D286-1149-083090-K0 - WIN 286 BIOS
	ROMX_LOAD( "kt216wb5_even.bin", 0x10000, 0x8000, CRC(6b5509c0) SHA1(73b303b90cc0cd23b7e13362019193c938a2e502), ROM_SKIP(1) )
	ROMX_LOAD( "kt216wb5_odd.bin", 0x10001, 0x8000, CRC(af541ada) SHA1(26d2617dbe8c15f1b0d4782375bcb291a7923703), ROM_SKIP(1) )
ROM_END

// LM-103S (1 8-bit ISA, 6 16-bit ISA, 4 memory slots)
// Headland Technology G2 chipset: HT101A + 2x HT102; HM6818P RTC; AMI keyboard BIOS
ROM_START( lm103s )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: D286-1234-121589-K0
	ROMX_LOAD( "ami_lm103-s_lo.bin", 0x10000, 0x8000, CRC(a24be20b) SHA1(ffc5faf6d773154bf2f037556d2e381e81a28a58), ROM_SKIP(1) )
	ROMX_LOAD( "ami_lm103-s_hi.bin", 0x10001, 0x8000, CRC(7b63e60c) SHA1(da78b95b12051b6d4701a412fdc5e7874595c188), ROM_SKIP(1) )
ROM_END

// Magictronic B233 (8 ISA slots)
// SUNTAC Chipset, http://toastytech.com/manuals/Magitronic%20B233%20Manual.pdf
ROM_START( magb233 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: DSUN-1105-043089-K0
	ROMX_LOAD( "magitronic_b233_ami_1986_286_bios_plus_even_sa027343.bin", 0x10000, 0x8000, CRC(d4a18444) SHA1(d95242104fc9b51cf26de72ef5b6c52d99ccce30), ROM_SKIP(1) )
	ROMX_LOAD( "magitronic_b233_ami_1986_286_bios_plus_odd_sa027343.bin", 0x10001, 0x8000, CRC(7ac3db56) SHA1(4340140450c4f8b4f6a19eae50a5dc5449edfdf6), ROM_SKIP(1) )
	// ROM_LOAD("magitronic_b233_ami_1986_keyboard_bios_plus_a025352.bin", 0x0000, 0x1000), CRC(84fd28fd) SHA1(43da0f49e52c921844e60b6f3d22f2a316d865cc) )
ROM_END

// MAT286 REV.D (5 16-bit ISA, 1 8-bit ISA, 2 memory slots)
// Headland Technology HT12P-16/A; HM6818P RTC; JETkey keyboard BIOS; unmarked 40-pin DIP
ROM_START( mat286 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: DH12-1112-061390-K0 - HT-12 286 BIOS
	// Files separated from single BIOS64 dump (PCB photo shows split ROMs are used)
	ROMX_LOAD( "9221fkf_imp23256_ami-l.bin", 0x10000, 0x08000, CRC(55deb5c2) SHA1(19ce1a7cc985b5895c585e39211475de2e3b0dd1), ROM_SKIP(1) )
	ROMX_LOAD( "9221gjf_imp23256_ami-h.bin", 0x10001, 0x08000, CRC(04a2cec4) SHA1(564d37a8b2c0f4d0e23cd1e280a09d47c9945da8), ROM_SKIP(1) )
ROM_END

ROM_START( ec1842 )
	ROM_REGION16_LE(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "4202004.bin", 0x1c001, 0x2000, CRC(33fb5382) SHA1(35eb62328324d93e7a06f2f9d1ad0002f83fc99b))
	ROM_LOAD16_BYTE( "4202005.bin", 0x1c000, 0x2000, CRC(8e05c119) SHA1(9d81613b4fc305c14ae9fda0b1dd97a290715530))
	ROM_LOAD16_BYTE( "4202006.bin", 0x18001, 0x2000, CRC(6da537ef) SHA1(f79feb433dcf41f5cdef52b845e3550d5f0fb5c0))
	ROM_LOAD16_BYTE( "4202007.bin", 0x18000, 0x2000, CRC(d6ee0e95) SHA1(6fd4c42190e879501198fede70ae43bc420681d0))
	// EGA ROM
	//ROM_LOAD16_BYTE( "4200009.bin", 0xc0000, 0x2000, CRC(9deeb39f) SHA1(255b859d3ea05891aa65a4a742ecaba744dfc923))
	//ROM_LOAD16_BYTE( "4200010.bin", 0xc0001, 0x2000, CRC(f2c38d93) SHA1(dcb3741d06089bf1a80cb766a6b94029ad698d73))
ROM_END

ROM_START( ec1849 )
	ROM_REGION16_LE(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "cpu-card_27c256_015.rom", 0x10000, 0x8000, CRC(68eadf0a) SHA1(903a7f1c3ebc6b27c31b512b2908c483608b5c13))
	ROM_LOAD16_BYTE( "cpu-card_27c256_016.rom", 0x10001, 0x8000, CRC(bc3924d6) SHA1(596be415e6c2bc4ff30a187f146664531565712c))
	//ROM_LOAD16_BYTE( "video-card_573rf6( 2764)_040.rom", 0xc0001, 0x2000, CRC(a3ece315) SHA1(e800e11c3b1b6fcaf41bfb7d4058a9d34fdd2b3f))
	//ROM_LOAD16_BYTE( "video-card_573rf6( 2764)_041.rom", 0xc0000, 0x2000, CRC(b0a2ba7f) SHA1(c8160e8bc97cd391558f1dddd3fd3ec4a19d030c))
ROM_END

//**************************************************************************
//  80286 Desktop
//**************************************************************************

// Kaypro 286i
ROM_START( k286i )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "81_1598", 0x18000, 0x4000, CRC(e25a1e43) SHA1(d00b976ac94323f3867b1c256e315839c906dd5a) )
	ROM_LOAD16_BYTE( "81_1599", 0x18001, 0x4000, CRC(08e2a17b) SHA1(a86ef116e82eb9240e60b52f76e5e510cdd393fd) )
ROM_END

// Sanyo MBC-28
ROM_START( mbc28 )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "mbc-28_sl-dt_ver.1620_low_din_checksum,454f00,27c256-15.bin", 0x10000, 0x8000, CRC(423b4693) SHA1(08e877baa59ebd9a1817dcdd27138c638edcbb84) )
	ROM_LOAD16_BYTE( "mbc-28_sl-dt_ver.1620_high_din_checksum,45ae00,27c256-15.bin", 0x10001, 0x8000, CRC(557b7346) SHA1(c0dca88627f8451211172441fefb4020839fb87f) )
ROM_END

// Siemens PCD-2
	// ROM_LOAD( "vga_nmc27c256q_435-0029-04_1988_video7_arrow.bin", 0x8000, 0x0800, CRC(0d8d7dff) SHA(cb5b2ab78d480ec3164d16c9c75f1449fa81a0e7) ) // Video7 VGA card
	// ROM_LOAD( "vga_nmc27c256q_435-0030-04_1988_video7_arrow.bin", 0x8000, 0x0800, CRC(0935c003) SHA(35ac571818f616b856da8bbf6a7a9172f68b3ab6) )
ROM_START( pcd2 )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "bios_tandon_188782-032a_rev_5.21_low.bin", 0x10000, 0x8000, CRC(a8fbffd3) SHA1(8a3ad5bc7f86ff984be10a8b1ae4542be4c80e5f) )
	ROM_LOAD16_BYTE( "bios_tandon_188782-031a_rev_5.21_high.bin", 0x10001, 0x8000, CRC(8d7dfdcc) SHA1(d1d58c0ad7db60399f9a93db48feb10e44ffd624) )

	ROM_REGION( 0x0800, "keyboard", 0 ) // reporting keyboard controller failure
	ROM_LOAD( "kbd_8742_award_upi_1.61_rev_1.01.bin", 0x000, 0x800, CRC(bb8a1979) SHA1(43d35ecf76e5e8d5ddf6c32b0f6f628a7542d6e4) ) // 8742 keyboard controller
ROM_END

// Compaq SLT/286 - complains about "102 - System board failure"
ROM_START( comslt286 )
	ROM_REGION(0x20000,"bios", 0)
	ROM_LOAD16_BYTE( "compaq_slt286-bios-revision_j.2-even.bin", 0x10000, 0x8000, CRC(77e894e0) SHA1(e935e62e203ec67eaab198c15a36cc0078fd35b0))
	ROM_LOAD16_BYTE( "compaq_slt286-bios-revision_j.2-odd.bin", 0x10001, 0x8000, CRC(4a0febac) SHA1(7da5ac4bc50f25063a1d1e382b8cff9b297976f8))
ROM_END

// Dell System 200 - complains about "memory overlap at 400000" but seems to work otherwise
ROM_START( dsys200 )
	ROM_REGION( 0x20000, "bios", 0 )
	ROM_LOAD16_BYTE( "version_3.10_a12_even.bin", 0x10000, 0x8000, CRC(5aa81939) SHA1(d9029d3708c49e72f57ae2a340429c28ec39acab))
	ROM_LOAD16_BYTE( "version_3.10_a12_odd.bin", 0x10001, 0x8000, CRC(942416cb) SHA1(b321704471e159030af82556ff25ac46c27a807e))

	ROM_REGION( 0x0800, "keyboard", 0 )
	ROM_LOAD( "20575_b47-00.bin", 0x000, 0x0800, CRC(148187db) SHA1(0d7542dd0b2bc3d6724ae3618a8543cb84a30e92) )
ROM_END

//  NCR, probably PC-8 - should get a "NGA" extended CGA graphics card once it's emulated
ROM_START( ncrpc8 )
	ROM_REGION(0x20000, "bios", 0)
	ROM_SYSTEM_BIOS(0, "pc8main", "NCR PC-8 mainboard") // large full size AT mainboard - Setup Version 2.3
	ROMX_LOAD( "ncr_35117_u127_vers.4-2.bin", 0x10000, 0x8000, CRC(f4338669) SHA1(c1d6e714591c8d7ab966acfdbc3b463e06fbd073), ROM_SKIP(1) | ROM_BIOS(0))
	ROMX_LOAD( "ncr_35116_u113_vers.4-2.bin", 0x10001, 0x8000, CRC(b1b6a2e2) SHA1(5b2c0a2be59e064076ed757d84f61bf955ceca08), ROM_SKIP(1) | ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "pc8card", "NCR PC-8 CPU card") // passive backplane and CPU card - Setup Version 2.1
	ROMX_LOAD( "ncr_u127-30_v.4.bin", 0x10000, 0x8000, CRC(33121525) SHA1(11f8d8af4dad432f558c646d7d0ff23eb642a815), ROM_SKIP(1) | ROM_BIOS(1))
	ROMX_LOAD( "ncr_u113-27_v.4.bin", 0x10001, 0x8000, CRC(87424492) SHA1(5b7aba5678fe55c81fee2e07730b8ae03a23160f), ROM_SKIP(1) | ROM_BIOS(1))
	ROM_REGION( 0x0800, "keyboard", 0 )
	ROM_LOAD ("ncr_keyboard_mcu_35091.bin", 0x0000, 0x800, CRC(632556cc) SHA1(b35f30bd0664fc1c2775a594f248d1e30237900a))
ROM_END

// Nixdorf 8810 M30
ROM_START( n8810m30 )
	ROM_REGION(0x20000, "bios", 0 )
	ROM_LOAD( "at286bios_53889.00.0.17jr.bin", 0x00000, 0x20000, CRC(74870212) SHA1(adb3f379c9aeee6a5beb946d23af6eea706aca1d) )
ROM_END

// Nixdorf 8810 M55
ROM_START( n8810m55 )
	ROM_REGION(0x20000, "bios", 0 )
	ROM_LOAD16_BYTE( "150-3872_u113_27_4.5.1.bin", 0x10001, 0x8000, CRC(35ff4fba) SHA1(557f0f98c27af76f6fa6990592e7150f5fc1fc02))
	ROM_LOAD16_BYTE( "150-3873_u127_30_4.5.1.bin", 0x10000, 0x8000, CRC(5a7e6643) SHA1(f3890919a772eead7232bd227b2c8677377f6e24))
ROM_END

// Olivetti M290 - has an Olivetti branded Paradise VGA - locks up with "Error 2" and a key symbol
ROM_START( m290 )
	ROM_REGION( 0x20000, "bios", 0 )
	ROM_LOAD( "m290_pep3_1.25.bin", 0x10000, 0x10000, CRC(cb57d677) SHA1(4bdf5c52567c129b413c866c63b5fb3562fccd23))

	ROM_REGION( 0x0800, "keyboard", 0 )
	ROM_LOAD( "m290_csl0_1.10.bin", 0x000, 0x0800, CRC(d767d496) SHA1(84246f7b39e0a005425948931cf93624b831e121) )
ROM_END

// Ericsson WS286
ROM_START( ews286 ) // Computer is brown/yellow-ish with Ericsson logo
	ROM_REGION(0x20000, "bios", 0)
	ROM_LOAD16_BYTE( "rys_103_1002_r8a_3c00_ic-pos_71.bin", 0x18000, 0x4000, CRC(af179e56) SHA1(58b1df46d6e68eef472a0529cb9317abaf17880f)) // Last ROM set and has Nokia
	ROM_LOAD16_BYTE( "rys_103_1003_r8a_8600_ic-pos_69.bin", 0x18001, 0x4000, CRC(555502cb) SHA1(1977fe54b69c5e52731bf3eb8bdabe777aac014b)) // copyright patched in both roms
ROM_END

// Nokia Data WS286
//ROM_START(nws286 ) // Computer is grey with Nokia logo.
//  ROM_REGION(0x20000,"bios", 0)
//  ROM_LOAD16_BYTE( "rys_103_1002_r8a_3c00_ic-pos_71.bin", 0x18000, 0x4000, NO_DUMP)
//  ROM_LOAD16_BYTE( "rys_103_1003_r8a_8600_ic-pos_69.bin", 0x18001, 0x4000, NO_DUMP)
//ROM_END


//**************************************************************************
//  80286 Notebook/Laptop/Portable
//**************************************************************************

// Compaq Portable II
ROM_START( comportii )
	ROM_REGION(0x20000,"bios", 0)
	ROM_SYSTEM_BIOS(0,"105620-001", "Ver. D (105620/105622)")
	ROMX_LOAD( "comportii_105622-001.bin", 0x18000, 0x4000, CRC(30804fa4) SHA1(204d16dac4db4df0ba23a336af62da3f66aa914c), ROM_SKIP(1) | ROM_BIOS(0) )
	ROMX_LOAD( "comportii_105620-001.bin", 0x18001, 0x4000, CRC(45fe43e8) SHA1(f74c2e30f7bd162be4042946ebcefeb236bd2fe7), ROM_SKIP(1) | ROM_BIOS(0) )
	ROM_SYSTEM_BIOS(1,"106437-001", "Ver. F (106437/106438)")
	ROMX_LOAD( "106438-001.bin", 0x18000, 0x4000, CRC(616361de) SHA1(ce1a6f9be9d374b76a83856f176aaa993d1dd46c), ROM_SKIP(1) | ROM_BIOS(1) )
	ROMX_LOAD( "106437-001.bin", 0x18001, 0x4000, CRC(b50881ae) SHA1(2a79b39f77b0d3e94e4f765ed6c1961746dad563), ROM_SKIP(1) | ROM_BIOS(1) )
	ROM_SYSTEM_BIOS(2,"109739-001", "Ver. P.1 (109739/109740)")
	ROMX_LOAD( "109740-001.rom", 0x18000, 0x4000, CRC(0c032f12) SHA1(3ae7833d7f92d6495e2e57caa0260b573187eb72), ROM_SKIP(1) | ROM_BIOS(2) )
	ROMX_LOAD( "109739-001.rom", 0x18001, 0x4000, CRC(83698b85) SHA1(3d3cff84a747aea3db2612a7ac3ebe9cb4700b33), ROM_SKIP(1) | ROM_BIOS(2) )
ROM_END

// Compaq Portable III
ROM_START( comportiii )
	ROM_REGION(0x20000,"bios", 0)
	ROM_SYSTEM_BIOS(0, "106779-002", "106779-002")
	ROMX_LOAD( "cpiii_87c128_106779-002.bin", 0x18000, 0x4000, CRC(aef8f532) SHA1(b0374d5aa8766f11043cbaee007e6d311f792e44), ROM_SKIP(1) | ROM_BIOS(0) )
	ROMX_LOAD( "cpiii_87c128_106778-002.bin", 0x18001, 0x4000, CRC(c259f628) SHA1(df0ca8aaead617114fbecb4ececbd1a3bb1d5f30), ROM_SKIP(1) | ROM_BIOS(0) )
	// ROM_LOAD( "cpiii_106436-001.bin", 0x0000, 0x1000, CRC(5acc716b) SHA(afe166ecf99136d15269e44ebf2d66317945bf9c) ) // keyboard
	ROM_SYSTEM_BIOS(1, "109737-002", "109737-002")
	ROMX_LOAD( "109738-002.bin", 0x10000, 0x8000, CRC(db131b8a) SHA1(6a8517a771272edf16870501fc1ed94c7555ef45), ROM_SKIP(1) | ROM_BIOS(1) )
	ROMX_LOAD( "109737-002.bin", 0x10001, 0x8000, CRC(8463cc41) SHA1(cb9801591e4a2cd13bbcc40739c9e675ba84c079), ROM_SKIP(1) | ROM_BIOS(1) )
ROM_END

// Nixdorf 8810 M15 Laptop - PC07 - boot from harddisk doesn't work
ROM_START( n8810m15 )
	// ROM_LOAD("charagene_v1.1_daft2c2.bin", 0x00000, 0x4000, CRC(dd324efd) SHA1(67fd91277733596bfad8506dc92d9f776e563dda)) // CGA chargen

	ROM_REGION(0x20000, "bios", 0 )
	ROM_LOAD16_BYTE( "rbios_even_daft2a3.bin", 0x10000, 0x8000, CRC(790abf68) SHA1(fbdb5e628ee9a605c8c1485a3fbb67736ff03153))
	ROM_LOAD16_BYTE( "rbios_odd_daft2b3.bin", 0x10001, 0x8000, CRC(b09a812a) SHA1(c1b3321715260f9cd8c810325dc10c674ea05174))
ROM_END

// Nixdorf 8810 M16 Laptop - PC17 - CGA version - boot from harddisk doesn't work
ROM_START( n8810m16c )
	// ROM_LOAD("201cg rev 1.0.u78", 0x00000, 0x4000, CRC(3e31143b) SHA1(489da357e0ab8a469a3fb81cce160637486c87bc)) // CGA chargen
	ROM_REGION(0x20000, "bios", 0 )
	ROM_LOAD16_BYTE( "nmc27c256.u35", 0x10000, 0x8000, CRC(51acd116) SHA1(1a0bf24af4eba48d0deb0132a523e131902d2bcd))
	ROM_LOAD16_BYTE( "nmc27c256.u36", 0x10001, 0x8000, CRC(fb47f9da) SHA1(d9bd4aea850a83764454a5c86c8da09f7c640fd6))
	ROM_REGION( 0x0800, "keyboard", 0 )
	ROM_LOAD( "d8749h.u69", 0x000, 0x0800, CRC(030051da) SHA1(91b60228452cd1d6af99786402bd3b4d3efc2f05) )
ROM_END

// Nixdorf 8810 M16 Laptop - PC17 - VGA version - boot from harddisk doesn't work
ROM_START( n8810m16v )
	// ROM_LOAD("8810m16vga_27c256_221vb_123g1.bin", 0x00000, 0x4000, CRC(3bc80739) SHA1(3d6d7fb01681eccbc0b560818654d5aa1e3c5230)) // C&T VGA BIOS for 82C455
	ROM_REGION(0x20000, "bios", 0 )
	ROM_LOAD16_BYTE( "8810m16vga_27c256_286bios_a2531511_a.bin", 0x10000, 0x8000, CRC(1de5e49b) SHA1(759878e13801278de96700bbef318a49cca68054))
	ROM_LOAD16_BYTE( "8810m16vga_27c256_286bios_a2531511_b.bin", 0x10001, 0x8000, CRC(a65cf1f8) SHA1(30d46b49e87f272540e24a278848122b3c40bdaf))
	ROM_REGION( 0x0800, "keyboard", 0 )
	ROM_LOAD( "8810m16vga_8749_201kb_rev3a.bin", 0x000, 0x0800, CRC(030051da) SHA1(91b60228452cd1d6af99786402bd3b4d3efc2f05) )
ROM_END


//**************************************************************************
//  80386 SX and DX BIOS
//**************************************************************************

ROM_START( at386sx )
	ROM_REGION(0x20000,"bios", 0)
	// 0: BIOS-String: 30-0100-D61204-00101111-050591-SCAMPSX-0 / MB-1316/20/25VST
	ROM_SYSTEM_BIOS(0, "mb386sx", "mb386sx-25spb") // VLSI SCAMPSX
	ROMX_LOAD( "386sx_bios_plus.bin", 0x10000, 0x10000, CRC(f71e5a8d) SHA1(e73fda2547d92bf578e93623d5f2349b97e22393), ROM_BIOS(0))
	// 1: BIOS-String: 30-0400-428027-00101111-070791-SCMPSX-0 / VLSI SCAMP 386SX 16/20/25MHz
	ROM_SYSTEM_BIOS(1, "scamp", "VLSI SCAMPSX")
	ROMX_LOAD( "ami_386sx_vlsi_scamp_070791.bin", 0x10000, 0x10000, CRC(082d071c) SHA1(69af9a951f138146036b3c9ac3761cc6589b6cf5), ROM_BIOS(1))
	// 2: NCR 386 CPU card
	ROM_SYSTEM_BIOS(2, "ncr386sx", "NCR 386sx card") // Upgrade card for e.g. NCR PC-8 - Setup Version 2.7.1
	ROMX_LOAD( "ncr_386sx_u12-19_7.3.bin", 0x10001, 0x8000, CRC(9e4c9a2a) SHA1(0a45d9f04f03b7ae39734916af7786bc52e5e917), ROM_SKIP(1) | ROM_BIOS(2))
	ROMX_LOAD( "ncr_386sx_u46-17_7.3.bin", 0x10000, 0x8000, CRC(73ad83a2) SHA1(bf6704fb4a0da37251f192cea3af2bc8cc2e9cdb), ROM_SKIP(1) | ROM_BIOS(2))
	// ROM_LOAD( "ncr_386sx_card_150-0004508_u1_v1.1.bin", 0x0000, 0x800, CRC(dd591ac1) SHA1(5bc40ca7340fa57aaf5d707be45a288f14085807))
	// 3: BIOS-String: 30-0501-D81105-00101111-070791-ACER1217-0 - 386SX NPM/33,40-A0(2) 05/12/1993
	ROM_SYSTEM_BIOS(3, "m919a00", "PC-Chips M919")
	ROMX_LOAD( "m919a00_npm-40.bin", 0x10000, 0x10000, CRC(4f330d82) SHA1(08224c7bcfb2a859b682bf44ac1ac7fd9f2ade78),ROM_BIOS(3))
ROM_END

ROM_START( ct386sx )
	ROM_REGION(0x20000,"bios", 0)
	// 0: BIOS-String: ENSX-1131-0040990-K0
	ROM_SYSTEM_BIOS(0, "neatsx", "NEATsx 386sx")
	ROMX_LOAD( "012l-u25.bin", 0x10000, 0x8000, CRC(4ab1862d) SHA1(d4e8d0ff43731270478ca7671a129080ff350a4f),ROM_SKIP(1) | ROM_BIOS(0))
	ROMX_LOAD( "012h-u24.bin", 0x10001, 0x8000, CRC(17472521) SHA1(7588c148fe53d9dc4cb2d0ab6e0fd51a39bb5d1a),ROM_SKIP(1) | ROM_BIOS(0))
	ROM_FILL(0x1e2c9, 1, 0x00) // skip incompatible keyboard controller test
	ROM_FILL(0x1e2cb, 1, 0xbb) // fix checksum
ROM_END

ROM_START( at386 )
	ROM_REGION(0x20000,"bios", 0)
	// 0: BIOS-String: X0-0100-000000-00101111-060692-386SX-0 / AMIBIOS Ver 5.19a
	ROM_SYSTEM_BIOS(0, "ami386", "AMI 386")
	ROMX_LOAD( "ami386.bin",  0x10000, 0x10000, CRC(3a807d7f) SHA1(8289ba36a3dfc3324333b1a834bc6b0402b546f0), ROM_BIOS(0))
	// 1: Phoenix 80386 ROM BIOS PLUS Verson 1.10 (R22)
	ROM_SYSTEM_BIOS(1, "at386", "unknown 386")  // This dump possibly comes from a MITAC INC 386 board, given that the original driver had it as manufacturer
	ROMX_LOAD( "at386.bin",  0x10000, 0x10000, CRC(3df9732a) SHA1(def71567dee373dc67063f204ef44ffab9453ead), ROM_BIOS(1))
	// 2: BIOS-String: 30-0101-429999-00101111-050591-D90-0 / AMI TD60C BIOS VERSION 2.42B
	ROM_SYSTEM_BIOS(2, "amicg", "AMI CG")
	ROMX_LOAD( "amicg.1",        0x10000, 0x10000,CRC(8408965a) SHA1(9893d3ac851e01b06a68a67d3721df36ca2c96f5), ROM_BIOS(2))
	// 3: Award Modular BIOS 4.50
	ROM_SYSTEM_BIOS(3, "pccm326", "PCChips M326 V5.2") //  BIOS reports a 66MHz 386DX original board has a TI TX486DLC/E-40PCE and IIT 4C87DLC-40 CPU/FPU combo
	ROMX_LOAD( "m326_v5.2_m601-326.bin", 0x10000, 0x10000, CRC(cca6a443) SHA1(096c8bfa000c682d6c801da27c7fd14243ebb63b), ROM_BIOS(3) )
	// 4: BIOS-String: 40-0100-001437-001001111-080893-4386-0 / Release 10/01/93.
	ROM_SYSTEM_BIOS(4, "m326r53", "PC-Chips M326 Rev. 5.3")
	ROMX_LOAD( "m326_rev.5.3.bin", 0x10000, 0x10000, CRC(6c156064) SHA1(362ce5a2333641083706a878b807ab87537ca1e6), ROM_BIOS(4) )
	// 5:
	ROM_SYSTEM_BIOS(5, "msi386", "MSI 386") // MSI 386 mainboard, initializes graphics card, then hangs
	ROMX_LOAD( "ami_386_msi_02297_even.bin", 0x10000, 0x8000, CRC(768590a0) SHA1(90c5203d78591a093fd4f54ceb8d9827f1e64f39), ROM_SKIP(1) | ROM_BIOS(5) )
	ROMX_LOAD( "ami_386_msi_02297_odd.bin", 0x10001, 0x8000, CRC(7b1360dc) SHA1(552ccda9f90826621e88d9abdc47306b9c2b2b15), ROM_SKIP(1) | ROM_BIOS(5) )
	// 6: BIOS-String: 20-0200-DF1121-00101111-102591-SYM_386B-0 / 386DX/SX (S1A.P)
	ROM_SYSTEM_BIOS(6, "386sc2c", "386-SC-2C")
	ROMX_LOAD("386-sc-2c_ami_za492668.bin", 0x10000, 0x10000, CRC(b408eeb7) SHA1(cf1974492119e1aae623fa366d5760343e827e52), ROM_BIOS(6) )
	// 7: BIOS-String: EC&T-1332-040990-K0
	ROM_SYSTEM_BIOS(7, "cs8230", "CS8230")
	ROMX_LOAD( "ami_386_cs8230_chipset.bin", 0x10000, 0x10000, CRC(1ee766d0) SHA1(75dba3c9817dfe6caca46f5f4f2f1d76ba88d3c7), ROM_BIOS(7) )
	// 8
	ROM_SYSTEM_BIOS(8, "ami2939", "AMI2939") // no display
	ROMX_LOAD( "ami2939e.rom", 0x10000, 0x8000, CRC(65cbbd32) SHA1(d7d26b496f8e86f01722ad9f171a68f9fcdc477c), ROM_SKIP(1) | ROM_BIOS(8) )
	ROMX_LOAD( "ami2939o.rom", 0x10001, 0x8000, CRC(8db6e739) SHA1(cdd47709d6036fad4be40c15bff41752d831d4b8), ROM_SKIP(1) | ROM_BIOS(8) )
	// 9: BIOS-String: 30-0201-ZZ1347-00101111-050591-M320-0
	ROM_SYSTEM_BIOS(9, "m321_23", "PCChips M321 Rev.2.3")
	ROMX_LOAD( "pcchips_m321_rev2.3.bin", 0x10000, 0x10000, CRC(ca0542e4) SHA1(8af9f88e022f8115708178c6c0b313ea0423a2b5), ROM_BIOS(9) )
	// 10: BIOS-String: 30-0200-DH1102-00101111-070791-ETEQ386-0 / REV C3
	ROM_SYSTEM_BIOS(10, "sy19i", "Soyo SY-19I")
	ROMX_LOAD( "ami_soyo_sy-19i.bin", 0x10000, 0x10000, CRC(369a040f) SHA1(3dbcbcb8b8a50717cae3b17f44ca1b7c394b75fc), ROM_BIOS(10) )
	// 11: NCR 386 slot CPU - Upgrade card for e.g. NCR PC-8 - set graphics card to CGA to see a "Timer One Error" message
	ROM_SYSTEM_BIOS(11, "ncr386", "NCR 386 CPU card")
	ROMX_LOAD( "ncr_386_card_04152_u44_ver5.0.bin", 0x10000, 0x10000, CRC(80e44318) SHA1(54e1d4d646a577c53c65b2292b383ed6d91b65b2), ROM_BIOS(11))
	// ROM_LOAD ("ncr_386_card_keyboard_04181_u27_ver5.6.bin", 0x0000, 0x800, CRC(6c9004e7) SHA1(0fe77f47ff77333d1ff9bfcf8d6d92193ab1f208))
	// 12: BIOS-String: Phoenix 80386 ROM BIOS PLUS Version 1.10 22
	ROM_SYSTEM_BIOS(12, "cbm386", "Commodore 386")
	ROMX_LOAD( "cbm-386-bios-lo-v1.022e-8100.bin", 0x10000, 0x8000, CRC(a054a1b8) SHA1(d952b02cc10534325c1c5aaa8b6dfb77bc20a179), ROM_SKIP(1) | ROM_BIOS(12))
	ROMX_LOAD( "cbm-386-bios-hi-v1.022e-d100.bin", 0x10001, 0x8000, CRC(b9541f3d) SHA1(e37c704521e85b07369d21b0521f4d1871c318dd), ROM_SKIP(1) | ROM_BIOS(12))
	// 13: flashing "K/B controller incorrect"
	ROM_SYSTEM_BIOS(13, "gmb386sat", "GMB-386SAT_V1.0")
	ROMX_LOAD( "gmb-386sat_v1.0.bin", 0x10000, 0x10000, CRC(59ecc773) SHA1(f2007fce76b3a91f51bfb5f43c1539d5ae06d35f), ROM_BIOS(13))
	// 14: BIOS-String: X0-0100-000000-00101111-060692-RC2018A-0 / Ver 1.4b / Texas Instruments 486 DLC [S3Q]
	ROM_SYSTEM_BIOS(14, "ti486dlc", "TI 486DLC") // board is equipped with a TI486DLC
	ROMX_LOAD( "ti_486dlc_rev.s3q.bin", 0x10000, 0x10000, CRC(39b150ed) SHA1(5fc96c6232dd3a066349d8e707e938af55893297), ROM_BIOS(14))
	// 15: BIOS-String: 40-0400-001107-00101111-111192-U4800VLX-0 / UNICHIP BIOS VER 2.0A 09/27/1993
	ROM_SYSTEM_BIOS(15, "386bw367", "386BW367 Rev. 1.0")
	ROMX_LOAD( "unichip_386bw_367_rev_1.0.bin", 0x10000, 0x10000, CRC(7922a8f9) SHA1(785008e10edfd393dc39e921a12d1a07a14bac25), ROM_BIOS(15))
ROM_END


//**************************************************************************
//  80386 SX and DX motherboard
//**************************************************************************

// CX Technology, Inc. Model SXD (4x SIMM, 4x 16-bit ISA)
// SARC RC2016A5; HM6818P; CX109; LT38C41 © Lance Corp. (keyboard controller?)
ROM_START( cxsxd )
	ROM_REGION(0x20000,"bios", 0)
	// BIOS-String: 03/25/93-SARC_RC2016A-219v0000 / CX 386SX System
	ROM_LOAD( "award_cx-sxd_v4.50.srd.bin", 0x10000, 0x10000, CRC(ef1c74d7) SHA1(b40b1cb7143c4e352798bdf3b488d9342a4029a7))
ROM_END

// Chips & Technologies CS8230 chip set: P82C301C, P82C302C, P82A303, P82A304, 2x P82B305, P82A306 A, P82C206
// 8x SIMM, 5x 16-bit ISA, 2x 8-bit ISA, 1x 32-bit proprietary memory expansion slot
ROM_START( ecs38632 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: EC&T-1131-030389-K0
	ROMX_LOAD( "ami_ecs-386_32_lo.bin", 0x10000, 0x8000, CRC(e119d6a4) SHA1(bcc6164173b44832b8ebfa1883e22efc167e2cd4), ROM_SKIP(1))
	ROMX_LOAD( "ami_ecs-386_32_hi.bin", 0x10001, 0x8000, CRC(e3072bf8) SHA1(74eec72e190f682cfd5ae5425ebdc854e0ba7bc9), ROM_SKIP(1))
ROM_END

// UMC UM82C482AF, UM82C391A, UM82C206F
// 8x SIMM, 8x ISA
ROM_START( ecsum386 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: 30-0500-D01131-00101111-070791-UMCWB-0 / UM386 V1.1 03-06-92
	ROM_LOAD( "ami_um386_rev1.1.bin", 0x10000, 0x10000,CRC(81fe4297) SHA1(efb2ba2be6f08cb487ee1b867a2456ed6b5975ad))
ROM_END

// Chips & Technologies P82C351, P82C355, P82C356
// 6x 16-bit ISA + 2x 8-bit ISA
ROM_START( fu340 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: 30-0200-D01247-00101111-050591-PEAKDM_B-0 / FU340 REV-B PAGE MODE BIOS
	ROM_LOAD( "ami_abit_fu340.bin", 0x10000, 0x10000,CRC(9ea90d90) SHA1(091bdae7b1e36ac5168823d80d5907af2a95e583))
ROM_END

// Forex FRX36C300 + FRX46C402; SiS 85C206
// 8x SIMM, 8x ISA
ROM_START( smih0107 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: 30-0400-428005-00101111-070791-FORX-0 / BIOS ID SMIH0107 / IT9112
	ROM_LOAD( "ami_smih0107.bin", 0x10000, 0x10000, CRC(970bb0c0) SHA1(4a958887485f7239d25fa7b0c98569b97ce93800))
ROM_END


//**************************************************************************
//  80386 SX and DX Laptop/Notebook
//**************************************************************************

// Siemens-Nixdorf PCD-3Nsx notebook
// Intel NG680386SX-16, DP8473V, CHIPS F82C601, DS??87, unknown QFP100, ADC0833BCN (on PCU sub)
// Microcontrollers: N8042AH (KBC),  N80C51BH (KBE)
ROM_START( pcd3nsx )
	ROM_REGION( 0x20000, "bios", 0 )
	// Phoenix 80386 ROM BIOS PLUS Version 1.10.00 - failure at 100000-10FFFF - Resume memory backup failure
	ROM_SYSTEM_BIOS(0, "pcd3nsxno1", "pcd3nsxno1")
	ROMX_LOAD( "3n102l30.bin", 0x00000, 0x20000, CRC(02384c19) SHA1(552dc41b40272027e2b031187f8ab1e1513751b9), ROM_BIOS(0) )
	// Phoenix 80386 ROM BIOS PLUS Version 1.10.00 - Memory high address failure at 100000-10FFFF - Resume memory backup failure
	ROM_SYSTEM_BIOS(1, "pcd3nsxno2", "pcd3nsxno2")
	ROMX_LOAD( "3n120l40.bin", 0x00000, 0x20000, CRC(1336dd75) SHA1(80306d85f417c51a5235ac2f02ceb58bdb51205f), ROM_BIOS(1) )

	ROM_REGION( 0x800, "kbc", 0 )
	ROM_LOAD("kbc_c3f.bin", 0x000, 0x800, NO_DUMP)

	ROM_REGION( 0x1000, "kbe", 0 )
	ROM_LOAD("kbe_e3d.bin", 0x0000, 0x1000, NO_DUMP)
ROM_END

// Toshiba T2000SX
ROM_START( t2000sx )
	ROM_REGION( 0x20000, "bios", 0 )
	ROM_LOAD( "014d.ic9", 0x00000, 0x20000, CRC(e9010b02) SHA1(75688fc8e222640fa22bcc90343c6966fe0da87f))
ROM_END

// Triumph-Adler Walkstation 386 SX - German version of the Olivetti S20
// VLSI VL82C320 + VL82C331; DP8473V
ROM_START( walk386sx )
	ROM_REGION( 0x20000, "bios", 0 ) // contains Cirrus Logic VGA BIOS
	ROM_LOAD( "cthj01_1014.bin", 0x00000, 0x20000, CRC(805084b9) SHA1(a92d78050844ccbcce53109c42603639aedd2335) )

	ROM_REGION( 0x2000, "mcu", 0 ) // MC68HC805B6FN
	ROM_LOAD( "cthj02_08_76.bin", 0x0000, 0x2000, NO_DUMP )

	ROM_REGION( 0x1000, "cop888", 0 ) // COPCL888-RDT/V
	ROM_LOAD( "s9124ab_c4_e904-34162_00.bin", 0x0000, 0x1000, NO_DUMP )
ROM_END

// Triumph-Adler Walkstation 386DX - German version of the Olivetti D33
// VLSI TOPCAT chipset: VL82C330 + VL82C331 + VL82C332 + VL82C106; Austek A38202C; DP8473V
// Video board: Cirrus Logic CL-GD610 + CL-GD620 + CL-GD63
ROM_START( walk386dx )
	ROM_REGION( 0x20000, "bios", 0 ) // contains Cirrus Logic VGA BIOS
	ROM_LOAD( "am28f010_ctaa060125rc.bin", 0x00000, 0x20000, CRC(6cc540fe) SHA1(9853793d5433bbc5efc09c7f31c4a8a8f78d4549) )

	ROM_REGION( 0x2000, "mcu", 0 )
	ROM_LOAD( "cthj02_03_76.bin", 0x0000, 0x2000, NO_DUMP )
ROM_END


//**************************************************************************
//  80486 BIOS
//**************************************************************************

ROM_START( at486 )
	ROM_REGION(0x20000, "bios", 0)
	// 0: BIOS-String: 30-0500-ZZ1130-00101111-070791-1219-0
	ROM_SYSTEM_BIOS(0, "at486", "PC/AT 486")
	ROMX_LOAD( "at486.bin",   0x10000, 0x10000, CRC(31214616) SHA1(51b41fa44d92151025fc9ad06e518e906935e689), ROM_BIOS(0))
	// 1: BIOS-String: 40-0100-009999-11101111-070791-UMC480A-0 / United Microelectronics Corporation (UMC) MG-48602
	ROM_SYSTEM_BIOS(1, "mg48602", "UMC MG-48602")
	ROMX_LOAD( "mg48602.bin", 0x10000, 0x10000, CRC(45797823) SHA1(a5fab258aecabde615e1e97af5911d6cf9938c11), ROM_BIOS(1))
	// 2: BIOS-String: 40-0000-001470-00101111-060692-SIS3486-0 / 24X-VS-XX-B
	ROM_SYSTEM_BIOS(2, "ft01232", "Free Tech 01-232")
	ROMX_LOAD( "ft01232.bin", 0x10000, 0x10000, CRC(30efaf92) SHA1(665c8ef05ca052dcc06bb473c9539546bfef1e86), ROM_BIOS(2))

	/* 486 boards from FIC

	naming convention
	xxxxx101 --> for EPROM
	xxxxx701 --> for EEPROM using a Flash Utility v5.02
	xxxxBxxx --> NS 311/312 IO Core Logic
	xxxxCxxx --> NS 332 IO Core Logic
	xxxxGxxx --> Winbond W83787F IO Core Logic
	xxxxJxxx --> Winbond W83877F IO Core Logic

	*/
	// 3: BIOS-String: 06/16/97-VT82C486A-214L2000-00 / Version 3.276GN1
	/* this is the year 2000 beta bios from FIC, supports GIO-VT, GAC-V, GAC-2, VIP-IO, VIO-VP and GVT-2 */
	ROM_SYSTEM_BIOS(3, "ficy2k", "FIC 486 3.276GN1") /* includes CL-GD5429 VGA BIOS 1.00a */
	ROMX_LOAD( "3276gn1.bin",  0x00000, 0x20000, CRC(d4ff0cc4) SHA1(567b6bdbc9bff306c8c955f275e01ae4c45fd5f2), ROM_BIOS(3))
	// 4: BIOS-String: 04/29/94-VT82C486A-214L2000-00 / Award Modular BIOS v4.50
	ROM_SYSTEM_BIOS(4, "ficgac2", "FIC 486-GAC-2") /* includes CL-GD542X VGA BIOS 1.50 */
	ROMX_LOAD( "att409be.bin", 0x00000, 0x20000, CRC(c58e017b) SHA1(14c19e720ce62eb2afe28a70f4e4ebafab0f9e77), ROM_BIOS(4))
	// 5: BIOS-String: 04/08/96-VT82C486A-214L2000-00 / Version 3.27GN1
	ROM_SYSTEM_BIOS(5, "ficgacv", "FIC 486-GAC-V 3.27GN1") /* includes CL-GD542X VGA BIOS 1.41 */
	ROMX_LOAD( "327gn1.awd",   0x00000, 0x20000, CRC(017614d4) SHA1(2228c28f21a7e78033d24319449297936465b164), ROM_BIOS(5))
	// 6: BIOS-String: 05/06/94-VT82C486A-214L2000-00 / Version 3.15GN
	ROM_SYSTEM_BIOS(6, "ficgiovp", "FIC 486-GIO-VP 3.15GN")
	ROMX_LOAD( "giovp315.rom", 0x10000, 0x10000, CRC(e102c3f5) SHA1(f15a7e9311cc17afe86da0b369607768b030ddec), ROM_BIOS(6))
	// 7: BIOS-String: 11/20/94-VT82C486A-214L2000-00 / Version 3.06G (11/25/94)
	ROM_SYSTEM_BIOS(7, "ficgiovt", "FIC 486-GIO-VT 3.06G") /* 1994-11-20 */
	ROMX_LOAD( "306gcd00.awd", 0x10000, 0x10000, CRC(75f3ded4) SHA1(999d4b58204e0b0f33262d0613c855b528bf9597), ROM_BIOS(7))
	// 8: BIOS-String: 07/06/VT82C486A-214L2000-00 / Version  3.26G
	ROM_SYSTEM_BIOS(8, "ficgiovt2_326", "FIC 486-GIO-VT2 3.26G")
	ROMX_LOAD( "326g1c00.awd", 0x10000, 0x10000, CRC(2e729ab5) SHA1(b713f97fa0e0b62856dab917f417f5b21020b354), ROM_BIOS(8))
	// 9: BIOS-String: 06/19/95-VT82C486A-214L2000-00 / Version VBS1.08H 486-GIO-VT2
	ROM_SYSTEM_BIOS(9, "486_gio_vt2","VBS1.08H 486-GVT-2")
	ROMX_LOAD( "award_486_gio_vt2.bin", 0x10000, 0x10000, CRC(58d7c7f9) SHA1(097f15ec2bd672cb3f1763298ca802c7ff26021f), ROM_BIOS(9)) // Vobis version, Highscreen boot logo
	// 10: BIOS-String: 07/17/97-VT82C486A-214L2000-00 / Version 3.276
	ROM_SYSTEM_BIOS(10, "ficgiovt2_3276", "FIC 486-GIO-VT2 3.276")
	ROMX_LOAD( "32760000.bin", 0x10000, 0x10000, CRC(ad179128) SHA1(595f67ba4a1c8eb5e118d75bf657fff3803dcf4f), ROM_BIOS(10))
	// 11: BIOS-String: 11/02/94-VT82C486A-214L2000-00 Version 3.07G
	ROM_SYSTEM_BIOS(11, "ficgvt2", "FIC 486-GVT-2 3.07G")
	ROMX_LOAD( "3073.bin",     0x10000, 0x10000, CRC(a6723863) SHA1(ee93a2f1ec84a3d67e267d0a490029f9165f1533), ROM_BIOS(11))
	// 12: BIOS-String: 06/27/95-VT82C505-2A4L4000-00 / Version 5.15S
	ROM_SYSTEM_BIOS(12, "ficgpak2", "FIC 486-PAK-2 5.15S") /* includes Phoenix S3 TRIO64 Enhanced VGA BIOS 1.4-01 */
	ROMX_LOAD( "515sbd8a.awd", 0x00000, 0x20000, CRC(778247e1) SHA1(07d8f0f2464abf507be1e8dfa06cd88737782411), ROM_BIOS(12))
	// 13
	ROM_SYSTEM_BIOS(13, "ficpio3g7", "FIC 486-PIO-3 1.15G705") /* pnp */
	ROMX_LOAD( "115g705.awd",  0x00000, 0x20000, CRC(ddb1544a) SHA1(d165c9ecdc9397789abddfe0fef69fdf954fa41b), ROM_BIOS(13))
	// 14
	ROM_SYSTEM_BIOS(14, "ficpio3g1", "FIC 486-PIO-3 1.15G105") /* non-pnp */
	ROMX_LOAD( "115g105.awd",  0x00000, 0x20000, CRC(b327eb83) SHA1(9e1ff53e07ca035d8d43951bac345fec7131678d), ROM_BIOS(14))
	// 15
	ROM_SYSTEM_BIOS(15, "ficpos", "FIC 486-POS")
	ROMX_LOAD( "116di6b7.bin", 0x00000, 0x20000, CRC(d1d84616) SHA1(2f2b27ce100cf784260d8e155b48db8cfbc63285), ROM_BIOS(15))
	// 16: BIOS-String: 06/27/95-VT82C505-2A4L4000-00 / Version 5.15
	ROM_SYSTEM_BIOS(16, "ficpvt", "FIC 486-PVT 5.15")
	ROMX_LOAD( "5150eef3.awd", 0x00000, 0x20000, CRC(eb35785d) SHA1(1e601bc8da73f22f11effe9cdf5a84d52576142b), ROM_BIOS(16))
	// 17: BIOS-String: 10/05/95-VT82C505-2A4L4000-00 / Version 5.162W2(PCTIO)
	ROM_SYSTEM_BIOS(17, "ficpvtio", "FIC 486-PVT-IO 5.162W2")
	ROMX_LOAD( "5162cf37.awd", 0x00000, 0x20000, CRC(378d813d) SHA1(aa674eff5b972b31924941534c3c988f6f78dc93), ROM_BIOS(17))
	// 18: BIOS-String: 40-0401-428003-00101111-111192-OP495SLC-0 / PX486DX33/50P3 IVN 1.0 25/06/1993
	ROM_SYSTEM_BIOS(18, "qdi", "QDI PX486DX33/50P3")
	ROMX_LOAD( "qdi_px486.u23", 0x10000, 0x10000, CRC(c80ecfb6) SHA1(34cc9ef68ff719cd0771297bf184efa83a805f3e), ROM_BIOS(18))
	// 19: BIOS-String: 40-00AG-001247-00101111-060692-SIS3486-0 / AV4 ISA/VL-BUS SYSTEM BIOS
	ROM_SYSTEM_BIOS(19, "ava4529j", "AVA4529J") // this is a board with two VLB slots
	ROMX_LOAD("amibios_486dx_isa_bios_aa4025963.bin", 0x10000, 0x10000, CRC(65558d9e) SHA1(2e2840665d069112a2c7169afec687ad03449295), ROM_BIOS(19))
ROM_END


//**************************************************************************
//  80486 motherboard
//**************************************************************************

// J-Bond A433C-C/A450C-C (8 SIMM, 2 8-bit ISA, 6 16-bit ISA)
// ETEQ ET82C491 + ET82C493; CHIPS P82C206; AMI KB-BIOS-VER-F P8042AHP
ROM_START( a433cc )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: 40-0200-001353-0010111-070791-ETEQ4/1C-0 / ETEQ 486 Mar. 05, 1992
	ROM_LOAD( "ami_j-bond_a433c-c.bin", 0x10000, 0x10000, CRC(66031e98) SHA1(d2d1a26837d3ca943a6ef09ec3e6fbfaaa62cc46))
ROM_END

// ASUS PVI-486AP4 (Socket 3, 4 SIMM, 4 PCI, 4 ISA, 1 VLB)
// Intel Aries PCIset S82425EX + S82426EX; DS12887 RTC; VIA VT82C42N
ROM_START( a486ap4 )
	ROM_REGION(0x20000, "bios", 0)
	// 0: BIOS-String: 07/20/94-ARIES-P/I-AP4G-00 / #401A0-0104
	ROM_SYSTEM_BIOS(0, "486ap4v104", "ASUS PVI-486AP4 V1.04")
	ROMX_LOAD( "awai0104.bin", 0x00000, 0x20000, CRC(52ea7123) SHA1(3d242ea6d1bcdddd41e32e40708133c72f2bd060), ROM_BIOS(0))
	// 1: BIOS-String: 10/21/94-ARIES-P/I-AP4G-00 / #401A0-0203
	ROM_SYSTEM_BIOS(1, "486ap4v203", "ASUS PVI-486AP4 V2.03")
	ROMX_LOAD( "awai0203.bin", 0x00000, 0x20000, CRC(68d3a3f4) SHA1(6eee0c9aed2ede028eb170f8dd7921563293b99f), ROM_BIOS(1))
	// 2: BIOS-String: 11/08/94-ARIES-P/I-AP4G-00 / #401A0-0204
	ROM_SYSTEM_BIOS(2, "486ap4v204", "ASUS PVI-486AP4 V2.04")
	ROMX_LOAD( "awai0204.bin", 0x00000, 0x20000, CRC(b62b35bb) SHA1(b6fa3d7b1c88da37ce74aca329a31d2587652d97), ROM_BIOS(2))
	// 3: BIOS-String: 11/25/97/ARIES-P/I-AP4G-00 / #401A0-0205-2
	ROM_SYSTEM_BIOS(3, "486ap4v205-2", "ASUS PVI-486AP4 V2.05-2")
	ROMX_LOAD( "0205.002", 0x00000, 0x20000, CRC(632e8ee6) SHA1(3cf57b2654b0365e41ef5f5c82f68eeadf0e7a21), ROM_BIOS(3))
ROM_END

// ASUS PVI-486SP3 (Socket 3, 2 SIMM, 2 IDE, 3 PCI, 4 ISA, 1 VLB)
// SiS 85C496 + 85C497; UMC UM8669F; AMIKEY-2
ROM_START( a486sp3 )
	ROM_REGION(0x20000, "bios", 0) // Winbond W29EE011-15
	// 0: BIOS-String: 07/22/94-SATURN-P/I-4SP3-00 / #401A0-0207
	ROM_SYSTEM_BIOS(0, "v207", "ASUS PVI-486SP3 V2.07")
	ROMX_LOAD( "awsi0207.bin", 0x00000, 0x20000, CRC(0cb862aa) SHA1(7ffead05c1df47ec36afba395191145279c5e789), ROM_BIOS(0))
	// 1: BIOS-String: 07/22/94-SATURN-P/I-4SP3-00 / #401A0-0207
	ROM_SYSTEM_BIOS(1, "v2737", "ASUS PVI-486SP3 V2.07 #2")
	ROMX_LOAD( "awsi2737.bin", 0x00000, 0x20000, CRC(8cd9a89c) SHA1(6c68c23cc5e8ae66261e9fe931f2ce07efe767b6), ROM_BIOS(1))
ROM_END

// ASUS PCI/I-486SP3G V3.02 (Socket 3, 4 SIMM, 1 IDE, 1 SCSI, 3 PCI, 4 ISA)
// Intel Saturn II chipset: 82424ZX CDC + 82423TX DPU + 82378ZB SIO; NCR 53C820; National PC87332; DS12887 RTC; VIA VT82C42N
ROM_START( a486sp3g )
	ROM_REGION(0x20000, "bios", 0)
	// 0: BIOS-String: 10/21/94-SATURN-II-P/I-SP3G-00 / #401A0-302
	ROM_SYSTEM_BIOS(0, "v302", "ASUS PCI/I-486SP3G V3.02")
	ROMX_LOAD( "awsg0302.bin", 0x00000, 0x20000, CRC(21e918a0) SHA1(c7f937e3e90a43d7c7f867e686625b28a9c2484c), ROM_BIOS(0))
	// 1: BIOS-String: 08/15/95-SATURN-II-P/I-SP3G-00 / #401A0-304
	ROM_SYSTEM_BIOS(1, "v304", "ASUS PCI/I-486SP3G V3.04")
	ROMX_LOAD( "awsg0304.bin", 0x00000, 0x20000, CRC(f4d830d2) SHA1(086ccd14c7b0c521be1958d58b3539c4bfe4721f), ROM_BIOS(1))
ROM_END

// ASUS PCI/I-A486S (4 SIMM, 1 EISA)
// SiS chipset; SMC I/O; AMIKEY-2
ROM_START( aa486s )
	ROM_REGION(0x20000, "bios", 0)
	// 0: BIOS-String: 05/22/95/SiS-496-497B-PCI-A486-0-00 / #401A0-0203
	ROM_SYSTEM_BIOS(0, "v203", "ASUS PCI/I-A486S V2.03")
	ROMX_LOAD( "si4a0203.awd", 0x00000, 0x20000, CRC(95fcb7c6) SHA1(c19164d67af18c774e6eb06bd1570d95a24b2856), ROM_BIOS(0))
	// 1 boots into "boot block" rescue BIOS
	ROM_SYSTEM_BIOS(1, "v304", "ASUS PCI/I-A486S V3.04")
	ROMX_LOAD( "si4a0304.awd", 0x00000, 0x20000, CRC(a00ad907) SHA1(598d97ea29f930a9359429dc540d27bfdd0fcd20), ROM_BIOS(1))
ROM_END

// ASUS VL/EISA-486SV1 (8 EISA, 1 VLB)
ROM_START( a486sv1 )
	ROM_REGION(0x20000, "bios", 0)
	// BIOS-String: 05/20/94-SIS-486/EISA-E-486SV1-00 / #401A0-0112
	//ROM_SYSTEM_BIOS(0, "v112", "Award BIOS V1.12")
	ROM_LOAD( "e4sv0112.awd", 0x10000, 0x10000, CRC(d1d42fc9) SHA1(61549bf597517bb3c33e724e32b3cca981e65000))
ROM_END

// ASUS VL/I-486SV2G (GX4) (4 SIMM, 7 ISA, 2 VLB)
// SiS 85C471 + 85C407; AMIKEY-2
ROM_START( a486sv2g )
	ROM_REGION(0x20000, "bios", 0)
	// 0: BIOS-String: 11/17/94-SIS-85C471-I486SV2G-00 / #401A0-0304
	ROM_SYSTEM_BIOS(0, "v304", "ASUS VL/I-486SV2G (GX4) V3.04")
	ROMX_LOAD( "sv2g0304.bin", 0x10000, 0x10000, CRC(cceabe6f) SHA1(45d0e25603045255d1ccaf5cbddd1a9146f61529), ROM_BIOS(0))
	// 1: BIOS-String: 01/11/95-SIS-85C471-I486SV2G-00 / #401A0-0305-1
	ROM_SYSTEM_BIOS(1, "v305", "ASUS VL/I-486SV2G (GX4) V3.05")
	ROMX_LOAD( "0305.001", 0x10000, 0x10000, CRC(9f2f9b75) SHA1(789807d82e39d69f948f7897f99b2fe362330dd1), ROM_BIOS(1))
	// 2: BIOS-String: 08/22/95-SIS-85C471-I486SV2G-00 / #401A0-0401
	ROM_SYSTEM_BIOS(2, "v401", "ASUS VL/I-486SV2G (GX4) V4.01")
	ROMX_LOAD( "sv2g0401.bin", 0x10000, 0x10000, CRC(f544f65a) SHA1(9a5e39cfbd545a0026f959b42dbc742246205b3c), ROM_BIOS(2))
	// 3: BIOS-String: 11/03/95-SIS-85C471-I486SV2G-00 / #401A0-0402-1
	ROM_SYSTEM_BIOS(3, "v402", "ASUS VL/I-486SV2G (GX4) V4.02")
	ROMX_LOAD( "sv2g0402.bin", 0x10000, 0x10000, CRC(db8fe666) SHA1(e499da86261bc6b312a6bc3d94b9465e17c5a449), ROM_BIOS(3))
ROM_END

// Biostar MB8433UUD-A (4 SIMM, 2 IDE, 3 PCI, 4 ISA)
// UMC UM8881F, UM8886BF, UM8663AF; DS12887 RTC
ROM_START( mb8433uud )
	ROM_REGION(0x20000, "bios", 0) // Intel Flash P28F010
	ROM_LOAD( "uud0520s.bin", 0x00000, 0x20000, CRC(0e347559) SHA1(060d3040b103dee051c5c2cfe8c53382acdfedad))
ROM_END

// FIC 486-PIO-2 (4 ISA, 4 PCI)
// VIA VT82C505 (ISA/VL to PCI bridge) + VT82C496G (system chipset) + VT82C406MV (keyboard controller, RTC, CMOS), NS311/312 or NS332 I/O
ROM_START( ficpio2 )
	ROM_REGION(0x40000, "isa", 0)
	// 0
	ROM_SYSTEM_BIOS(0, "ficpio2c7", "FIC 486-PIO-2 1.15C701") /* pnp, i/o core: NS 332, doesn't boot, requires cache emulation? */
	ROMX_LOAD( "115c701.awd",  0x020000, 0x20000, CRC(b0dd7975) SHA1(bfde13b0fbd141bc945d37d92faca9f4f59b716d), ROM_BIOS(0))
	// 1
	ROM_SYSTEM_BIOS(1, "ficpio2b7", "FIC 486-PIO-2 1.15B701") /* pnp, i/o core: NS 311/312, doesn't boot, requires cache emulation? */
	ROMX_LOAD( "115b701.awd",  0x020000, 0x20000, CRC(ac24abad) SHA1(01174d84ed32fb1d95cd632d09f773acb8666c83), ROM_BIOS(1))
	// 2: BIOS-String: 04/18/96-VT496G-2A4LF0IC-00 / Version 1.15C101
	ROM_SYSTEM_BIOS(2, "ficpio2c1", "FIC 486-PIO-2 1.15C101") /* non-pnp, i/o core: NS 332, working  */
	ROMX_LOAD( "115c101.awd",  0x020000, 0x20000, CRC(5fadde88) SHA1(eff79692c1ecf34b6ea3f02409d14ce1f5c51bf9), ROM_BIOS(2))
	// 3: BIOS-String: 04/18/96-VT496G-2A4LF0IC-00 / Version 1.15B101
	ROM_SYSTEM_BIOS(3, "ficpio2b1", "FIC 486-PIO-2 1.15B101") /* non-pnp, i/o core: NS 311/312, working  */
	ROMX_LOAD( "115b101.awd",  0x020000, 0x20000, CRC(ff69617d) SHA1(ecbfc7315dcf6bd3e5b59e3ae9258759f64fe7a0), ROM_BIOS(3))
ROM_END

// FIC 486-VIP-IO (3 ISA, 4 PCI)
// VIA GMC chipset: VT82C505 + VT82C486A + VT82C482 + VT82C483 + VT83C461 IDE; DS12885Q RTC; National PC87332VLJ-S I/O
ROM_START( ficvipio )
	ROM_REGION(0x20000, "bios", 0)
	// 0: BIOS-String: 12/07/94-VT82C505-2A4L4000-00 / Version 4.26GN2(ES2) (12/07/94)
	ROM_SYSTEM_BIOS(0, "426gn2", "FIC 486-VIP-IO 4.26GN2")
	ROMX_LOAD( "426gn2.awd",   0x00000, 0x20000, CRC(5f472aa9) SHA1(9160abefae32b450e973651c052657b4becc72ba), ROM_BIOS(0))
	// 1: BIOS-String: 02/08/96-VT82C505-2A4L4000-00 / Version 4.27GN2A (02/14/96)
	ROM_SYSTEM_BIOS(1, "427gn2a", "FIC 486-VIP-IO 4.27GN2A")
	ROMX_LOAD( "427gn2a.awd",  0x00000, 0x20000, CRC(035ad56d) SHA1(0086db3eff711fc710b30e7f422fc5b4ab8d47aa), ROM_BIOS(1))
ROM_END

// FIC 486-VIP-IO2 (3 ISA, 4 PCI)
// VIA VT82C505 + VT82C496G + VT82C406MV
ROM_START( ficvipio2 )
	ROM_REGION(0x20000, "bios", 0)
	ROM_LOAD( "1164g701.awd", 0x00000, 0x20000, CRC(7b762683) SHA1(84debce7239c8b1978246688ae538f7c4f519d13))
ROM_END

// Shuttle HOT-409 (6 16-bit ISA incl. 2 VLB, 2 8-bit ISA, 8 SIMM)
// OPTi 82C495SX + 82C392SX + F82C206; MEGA-KB-1-WP
ROM_START( hot409 )
	ROM_REGION(0x20000, "bios", 0)
	// 0: BIOS-String: 40-0200-001343-00101111-111192-OPT495SX-0 / Version 2.0
	ROM_SYSTEM_BIOS(0, "hot409", "Shuttle HOT-409")
	ROMX_LOAD( "ami1992.bin", 0x10000, 0x10000, CRC(a19c3fd4) SHA1(404822c98344061b60883533395a89fe4902c177), ROM_BIOS(0))
	// 1: BIOS-String: 40-0204-001343-00101111-080893-OPT495SX-0 / OPTi495SX Version 3.0
	ROM_SYSTEM_BIOS(1, "hot409lba", "Shuttle HOT-409 with LBA")
	ROMX_LOAD( "409lba.rom", 0x10000, 0x10000, CRC(78c5e47e) SHA1(7f14a88a5548fc67dd00e73fd09745e899b93a89), ROM_BIOS(1))
ROM_END

// Siemens-Nixdorf 486 mainboards and BIOS versions
// The same mainboards were used in various case versions to get the different model lines, so an identification by the mainboard number (Dxxx) is safest
ROM_START( pcd4x )
	ROM_REGION( 0x20000, "bios", 0 )
	// D756, was used in PCD-4Lsx, contains Cirrus Logic VGA ROM
	ROM_SYSTEM_BIOS(0, "d756v320r316", "D756 BIOS V3.20 R3.16")
	ROMX_LOAD( "fts_biosupdated756noflashbiosepromv320_320316_149.bin", 0x00000, 0x20000, CRC(2ab60725) SHA1(333b64424c08ecbbaf47110c99ad0335da211489), ROM_BIOS(0) )
	// D674, was used in PCD-4M, PCD-4Msx, PCD-4RSXA/4RA
	ROM_SYSTEM_BIOS(1, "d674v320r316", "D674 BIOS V3.20 R3.16")
	ROMX_LOAD( "fts_biosupdated674noflashbiosepromv320_320316_144.bin", 0x00000, 0x20000, CRC(1293d27c) SHA1(22f36c4a5a0912011ed54ff917244f412208ffc0), ROM_BIOS(1) )
	// D802, was used in PCD-4HVL
	ROM_SYSTEM_BIOS(2, "d802v320r316", "D802 BIOS V3.20 R3.34.802")
	// PCD-4NL, contains C&T VGA BIOS
	ROMX_LOAD( "fts_biosupdated802noflashbiosepromv320_320334_152.bin", 0x00000, 0x20000, CRC(fb1cd3d2) SHA1(98043c6f0299e1c56e5f266ea5f117ae456447ff), ROM_BIOS(2) )
ROM_END


//**************************************************************************
//  80486 Laptop/Notebook
//**************************************************************************

// Siemens-Nixdorf PCD-4NL 486 subnotebook
// PhoenixBIOS(TM) A486 Version 1.03
// complains about "Pointer device failure" and "Memory failure at 00100000, read AA55 expecting 002C
ROM_START( pcd4nl )
	ROM_REGION( 0x20000, "bios", 0 )
	ROM_LOAD( "pcd4nl.bin", 0x00000, 0x20000, CRC(8adb4900) SHA1(a01c665fed769ff815bc2e5ae30901f7e12d721b) )
ROM_END

// Siemens-Nixdorf PCD-4ND 486 notebook - display remains blank
ROM_START( pcd4nd )
	ROM_REGION( 0x20000, "bios", 0 )
	ROM_SYSTEM_BIOS(0, "pcd4ndno1", "pcd4ndno1")
	ROMX_LOAD( "bf3m51.bin", 0x00000, 0x20000, CRC(6a2f90dd) SHA1(75704a83976e4bb02a028e761d01bd053cc0d4e7), ROM_BIOS(0) )
	ROM_SYSTEM_BIOS(1, "pcd4ndno2", "pcd4ndno2")
	ROMX_LOAD( "bf3q42.bin", 0x00000, 0x20000, CRC(fa81cf6e) SHA1(91313a6856ca22f40710a6c9c8a65f8e340784ab), ROM_BIOS(1) )
	ROM_SYSTEM_BIOS(2, "pcd4ndno3", "pcd4ndno3")
	ROMX_LOAD( "pcd-4nd_flash_28010.bin", 0x00000, 0x20000, CRC(53c0beea) SHA1(bfa17947529c51a8c9315884e156c01ddd23c0d8), ROM_BIOS(2) )
ROM_END

// LION 3500C notebook
ROM_START( lion3500 )
	ROM_REGION( 0x20000, "bios", 0 )
	ROM_LOAD( "lion3500.bin", 0x00000, 0x20000, CRC(fc409ac3) SHA1(9a7aa08b981dedffff31fda5d3496469ae2ec3a5) )
ROM_END

/***************************************************************************

  Game driver(s)

***************************************************************************/

//    YEAR  NAME       PARENT   COMPAT   MACHINE    INPUT  CLASS         INIT            COMPANY        FULLNAME                FLAGS
COMP( 1984, ibm5170,   0,       ibm5150, ibm5170,   0,     at_state,     init_at,        "International Business Machines",  "PC/AT 5170", MACHINE_NOT_WORKING )
COMP( 1985, ibm5170a,  ibm5170, 0,       ibm5170a,  0,     at_state,     init_at,        "International Business Machines",  "PC/AT 5170 8MHz", MACHINE_NOT_WORKING )
COMP( 1985, ibm5162,   ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "International Business Machines",  "PC/XT-286 5162", MACHINE_NOT_WORKING )
COMP( 1989, ibmps1es,  ibm5170, 0,       ibmps1,    0,     at_vrom_fix_state, init_at,   "International Business Machines",  "PS/1 (Spanish)", MACHINE_NOT_WORKING )
COMP( 1987, at,        ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "<generic>",   "PC/AT (CGA, MF2 Keyboard)", MACHINE_NOT_WORKING )
COMP( 1987, atvga,     ibm5170, 0,       atvga,     0,     at_state,     init_at,        "<generic>",   "PC/AT (VGA, MF2 Keyboard)" , MACHINE_NOT_WORKING )
COMP( 1988, at386,     ibm5170, 0,       at386,     0,     at_state,     init_at,        "<generic>",   "PC/AT 386 (VGA, MF2 Keyboard)", MACHINE_NOT_WORKING )
COMP( 1988, ecs38632,  ibm5170, 0,       at386,     0,     at_state,     init_at,        "Elitegroup Computer Systems",      "ECS-386/32", MACHINE_NOT_WORKING )
COMP( 1992, ecsum386,  ibm5170, 0,       at386,     0,     at_state,     init_at,        "Elitegroup Computer Systems",      "UM386 (Rev 1.1)", MACHINE_NOT_WORKING )
COMP( 1991, fu340,     ibm5170, 0,       at386,     0,     at_state,     init_at,        "Abit",        "FU340", MACHINE_NOT_WORKING )
COMP( 19??, smih0107,  ibm5170, 0,       at386,     0,     at_state,     init_at,        "Forex Computer Company", "unknown 386 AT clone with Forex chipset", MACHINE_NOT_WORKING )
COMP( 1988, ct386sx,   ibm5170, 0,       ct386sx,   0,     at_state,     init_at,        "<generic>",   "NEAT 386SX (VGA, MF2 Keyboard)", MACHINE_NOT_WORKING )
COMP( 1988, at386sx,   ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "<generic>",   "PC/AT 386SX (VGA, MF2 Keyboard)", MACHINE_NOT_WORKING )
COMP( 1993, cxsxd,     ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "CX Technology", "CX SXD", MACHINE_NOT_WORKING )
COMP( 1990, at486,     ibm5170, 0,       at486,     0,     at_state,     init_at,        "<generic>",   "PC/AT 486 (VGA, MF2 Keyboard)", MACHINE_NOT_WORKING )
COMP( 1989, neat,      ibm5170, 0,       neat,      0,     at_state,     init_at,        "<generic>",   "NEAT (VGA, MF2 Keyboard)", MACHINE_NOT_WORKING )
COMP( 1989, ec1842,    ibm5150, 0,       ec1842,    0,     at_state,     init_at,        "<unknown>",   "EC-1842", MACHINE_NOT_WORKING )
COMP( 1993, ec1849,    ibm5170, 0,       ec1842,    0,     at_state,     init_at,        "<unknown>",   "EC-1849", MACHINE_NOT_WORKING )
COMP( 1993, megapc,    0,       0,       megapc,    0,     megapc_state, init_megapc,    "Amstrad plc", "MegaPC", MACHINE_NOT_WORKING )
COMP( 199?, megapcpl,  megapc,  0,       megapcpl,  0,     megapc_state, init_megapcpl,  "Amstrad plc", "MegaPC Plus", MACHINE_NOT_WORKING )
COMP( 199?, megapcpla, megapc,  0,       megapcpla, 0,     at_vrom_fix_state, init_megapcpla, "Amstrad plc", "MegaPC Plus (WINBUS chipset)", MACHINE_NOT_WORKING )
COMP( 1989, pc2386,    ibm5170, 0,       at386l,    0,     at_state,     init_at,        "Amstrad plc", "PC2386", MACHINE_NOT_WORKING )
COMP( 1991, aprfte,    ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot FT//ex 486 (J3 Motherboard)", MACHINE_NOT_WORKING )
COMP( 1991, ftsserv,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot FTs (Scorpion)", MACHINE_NOT_WORKING )
COMP( 1992, aprpand,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot FTs (Panther Rev F 1.02.26)", MACHINE_NOT_WORKING )
COMP( 1990, aplanst,   ibm5170, 0,       at386,     0,     at_state,     init_at,        "Apricot",     "Apricot LANstation (Krypton Motherboard)", MACHINE_NOT_WORKING )
COMP( 1990, aplannb,   ibm5170, 0,       at386,     0,     at_state,     init_at,        "Apricot",     "Apricot LANstation (Novell Remote Boot)", MACHINE_NOT_WORKING )
COMP( 1992, aplscar,   ibm5170, 0,       at486l,    0,     at_state,     init_at,        "Apricot",     "Apricot LS Pro (Caracal Motherboard)", MACHINE_NOT_WORKING )
COMP( 1992, aplsbon,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot LS Pro (Bonsai Motherboard)", MACHINE_NOT_WORKING )
COMP( 1988, xb42663,   ibm5170, 0,       at386,     0,     at_state,     init_at,        "Apricot",     "Apricot Qi 300 (Rev D,E & F Motherboard)", MACHINE_NOT_WORKING )
COMP( 1988, qi600,     ibm5170, 0,       at386,     0,     at_state,     init_at,        "Apricot",     "Apricot Qi 600 (Neptune Motherboard)", MACHINE_NOT_WORKING )
COMP( 1990, qi900,     ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot Qi 900 (Scorpion Motherboard)", MACHINE_NOT_WORKING )
COMP( 1989, apvxft,    ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot VX FT server", MACHINE_NOT_WORKING )
COMP( 1991, apxenls3,  ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot XEN-LS (Venus IV Motherboard)", MACHINE_NOT_WORKING )
COMP( 1993, apxlsam,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot XEN-LS II (Samurai Motherboard)", MACHINE_NOT_WORKING )
COMP( 1987, apxeni,    ibm5170, 0,       at386,     0,     at_state,     init_at,        "Apricot",     "Apricot XEN-i 386 (Leopard Motherboard)" , MACHINE_NOT_WORKING )
COMP( 1989, xb42639,   ibm5170, 0,       xb42639,   0,     at_state,     init_at,        "Apricot",     "Apricot XEN-S (Venus I Motherboard 286)" , MACHINE_NOT_WORKING )
COMP( 1990, xb42639a,  ibm5170, 0,       xb42639,   0,     at_state,     init_at,        "Apricot",     "Apricot XEN-S (Venus II Motherboard 286)" , MACHINE_NOT_WORKING )
COMP( 1989, xb42664,   ibm5170, 0,       at386,     0,     at_state,     init_at,        "Apricot",     "Apricot XEN-S (Venus I Motherboard 386)" , MACHINE_NOT_WORKING )
COMP( 1990, xb42664a,  ibm5170, 0,       at386,     0,     at_state,     init_at,        "Apricot",     "Apricot XEN-S (Venus II Motherboard 386)" , MACHINE_NOT_WORKING )
COMP( 1993, apxena1,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot XEN PC (A1 Motherboard)", MACHINE_NOT_WORKING )
COMP( 1993, apxenp2,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Apricot",     "Apricot XEN PC (P2 Motherboard)", MACHINE_NOT_WORKING )
COMP( 1992, a433cc,    ibm5170, 0,       at486,     0,     at_state,     init_at,        "J-Bond",      "A433C-C/A450C-C", MACHINE_NOT_WORKING )
COMP( 1994, a486ap4,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Asus",        "PVI-486AP4", MACHINE_NOT_WORKING )
COMP( 1994, a486sp3,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Asus",        "PVI-486SP3", MACHINE_NOT_WORKING )
COMP( 1994, a486sp3g,  ibm5170, 0,       at486,     0,     at_state,     init_at,        "Asus",        "PCI/I-486SP3G", MACHINE_NOT_WORKING )
COMP( 1995, aa486s,    ibm5170, 0,       at486,     0,     at_state,     init_at,        "Asus",        "PCI/I-A486S", MACHINE_NOT_WORKING )
COMP( 1994, a486sv1,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Asus",        "VL/EISA-486SV1", MACHINE_NOT_WORKING )
COMP( 1994, a486sv2g,  ibm5170, 0,       at486,     0,     at_state,     init_at,        "Asus",        "VL/I-486SV2G", MACHINE_NOT_WORKING )
COMP( 199?, mb8433uud, ibm5170, 0,       at486,     0,     at_state,     init_at,        "Biostar",     "MB8433-UUD-A", MACHINE_NOT_WORKING ) // lands in Award BootBlock BIOS
COMP( 1990, c386sx16,  ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "Commodore Business Machines", "386SX-16", MACHINE_NOT_WORKING )
COMP( 199?, dt386,     ibm5170, 0,       at386,     0,     at_state,     init_at,        "Commodore Business Machines", "DT386", MACHINE_NOT_WORKING )
COMP( 199?, dt486,     ibm5170, 0,       at486,     0,     at_state,     init_at,        "Commodore Business Machines", "DT486", MACHINE_NOT_WORKING )
COMP( 1988, pc30iii,   ibm5170, 0,       pc30iii,   0,     at_state,     init_at,        "Commodore Business Machines",  "PC 30-III", MACHINE_NOT_WORKING )
COMP( 1988, pc40iii,   ibm5170, 0,       pc40iii,   0,     at_state,     init_at,        "Commodore Business Machines",  "PC 40-III", MACHINE_NOT_WORKING )
COMP( 198?, pc45iii,   ibm5170, 0,       pc40iii,   0,     at_state,     init_at,        "Commodore Business Machines",  "PC 45-III", MACHINE_NOT_WORKING )
COMP( 198?, pc50ii,    ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "Commodore Business Machines",  "PC 50-II", MACHINE_NOT_WORKING )
COMP( 198?, pc60iii,   ibm5170, 0,       at386,     0,     at_state,     init_at,        "Commodore Business Machines",  "PC 60-III", MACHINE_NOT_WORKING )
COMP( 199?, pc70iii,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Commodore Business Machines",  "PC 70-III", MACHINE_NOT_WORKING )
COMP( 1990, c286lt,    ibm5170, 0,       atvga,     0,     at_state,     init_at,        "Commodore Business Machines",  "Laptop C286LT", MACHINE_NOT_WORKING )
COMP( 1991, c386sxlt,  ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "Commodore Business Machines",  "Laptop C386SX-LT", MACHINE_NOT_WORKING )
COMP( 199?, csl286,    ibm5170, 0,       atvga,     0,     at_state,     init_at,        "Commodore Business Machines",  "SL 286-16", MACHINE_NOT_WORKING )
COMP( 199?, comt386,   ibm5170, 0,       at386,     0,     at_state,     init_at,        "Commodore Business Machines",  "Tower 386", MACHINE_NOT_WORKING )
COMP( 199?, comt486,   ibm5170, 0,       at486,     0,     at_state,     init_at,        "Commodore Business Machines",  "Tower 486", MACHINE_NOT_WORKING )
COMP( 1988, dsys200,   ibm5170, 0,       atvga,     0,     at_state,     init_at,        "Dell Computer Corporation",    "System 200", MACHINE_NOT_WORKING )
COMP( 1995, ficpio2,   ibm5170, 0,       ficpio2,   0,     at_state,     init_atpci,     "First International Computer", "486-PIO-2", MACHINE_NOT_WORKING )
COMP( 1994, ficvipio,  ibm5170, 0,       at486,     0,     at_state,     init_at,        "First International Computer", "486-VIP-IO", MACHINE_NOT_WORKING )
COMP( 199?, ficvipio2, ibm5170, 0,       at486,     0,     at_state,     init_at,        "First International Computer", "486-VIP-IO2", MACHINE_NOT_WORKING )
COMP( 199?, hot409,    ibm5170, 0,       at486,     0,     at_state,     init_at,        "Shuttle Computer International", "HOT-409", MACHINE_NOT_WORKING )
COMP( 1985, k286i,     ibm5170, 0,       k286i,     0,     at_state,     init_at,        "Kaypro",      "286i", MACHINE_NOT_WORKING )
COMP( 1991, t2000sx,   ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "Toshiba",     "T2000SX", MACHINE_NOT_WORKING )
COMP( 1992, mbc28,     ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "Sanyo",       "MBC-28", MACHINE_NOT_WORKING ) // Complains about missing mouse hardware
COMP( 199?, sarcpc,    ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "<unknown>",   "80286 Standard System (SARC RC2015 chipset)", MACHINE_NOT_WORKING )
COMP( 1986, pcd2,      ibm5170, 0,       ibm5170,   0,     at_state,     init_at,        "Siemens",     "PCD-2", MACHINE_NOT_WORKING )
COMP( 199?, pcd3nsx,   ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "Siemens-Nixdorf", "PCD-3Nsx Notebook Computer", MACHINE_NOT_WORKING )
COMP( 199?, pcd4x,     ibm5170, 0,       at486,     0,     at_state,     init_at,        "Siemens-Nixdorf", "PCD-4H, PCD-4M", MACHINE_NOT_WORKING )
COMP( 1995, pcd4nl,    ibm5170, 0,       at486,     0,     at_state,     init_at,        "Siemens-Nixdorf", "PCD-4NL", MACHINE_NOT_WORKING )
COMP( 1993, pcd4nd,    ibm5170, 0,       at486,     0,     at_state,     init_at,        "Siemens-Nixdorf", "PCD-4ND", MACHINE_NOT_WORKING )
COMP( 19??, toptek286, ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "Toptek Micro Computer", "286 Turbo", MACHINE_NOT_WORKING )
COMP( 1992, walk386sx, ibm5170, 0,       at386sx,   0,     at_state,     init_at,        "Triumph-Adler", "Walkstation 386 SX", MACHINE_NOT_WORKING ) // screen remains blank
COMP( 1992, walk386dx, ibm5170, 0,       at386,     0,     at_state,     init_at,        "Triumph-Adler", "Walkstation 386DX", MACHINE_NOT_WORKING ) // screen remains blank
COMP( 1987, comportii ,ibm5170, 0,       comportii, 0,     at_state,     init_at,        "Compaq",      "Portable II", MACHINE_NOT_WORKING )
COMP( 1987, comportiii,ibm5170, 0,       comportiii,0,     at_state,     init_at,        "Compaq",      "Portable III", MACHINE_NOT_WORKING )
COMP( 1988, comslt286, ibm5170, 0,       atvga,     0,     at_state,     init_at,        "Compaq",      "SLT/286", MACHINE_NOT_WORKING )
COMP( 1986, ews286,    ibm5170, 0,       ews286,    0,     at_state,     init_at,        "Ericsson",    "Ericsson WS286", MACHINE_NOT_WORKING )
COMP( 198?, ev1806,    ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "Everex Systems", "EV-1806", MACHINE_NOT_WORKING ) // continuous beeps (RAM not detected?)
COMP( 19??, ht286,     ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "unknown",     "unknown 286 AT clone (HT12/A chipset)", MACHINE_NOT_WORKING )
COMP( 19??, kt216wb5,  ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "KT Technology", "KT216WB5-HI Rev.2", MACHINE_NOT_WORKING )
COMP( 198?, lm103s,    ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "unknown",     "LM-103S", MACHINE_NOT_WORKING )
COMP( 198?, magb233,   ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "Magitronic Technology", "Magitronic B233", MACHINE_NOT_WORKING )
COMP( 19??, mat286,    ibm5170, 0,       ibm5162,   0,     at_state,     init_at,        "unknown",     "MAT286 Rev.D", MACHINE_NOT_WORKING )
COMP( 1986, ncrpc8,    ibm5170, 0,       atvga,     0,     at_state,     init_at,        "NCR",         "PC-8", MACHINE_NOT_WORKING )
COMP( 1987, n8810m15,  ibm5170, 0,       n8810m15,  0,     at_state,     init_at,        "Nixdorf Computer AG", "8810 M15", MACHINE_NOT_WORKING )
COMP( 1990, n8810m16c, ibm5170, 0,       n8810m15,  0,     at_state,     init_at,        "Nixdorf Computer AG", "8810 M16 CGA version", MACHINE_NOT_WORKING )
COMP( 1990, n8810m16v, ibm5170, 0,       atvga,     0,     at_state,     init_at,        "Nixdorf Computer AG", "8810 M16 VGA version", MACHINE_NOT_WORKING )
COMP( 1990, n8810m30,  ibm5170, 0,       neat,      0,     at_state,     init_at,        "Nixdorf Computer AG", "8810 M30", MACHINE_NOT_WORKING )
COMP( 1986, n8810m55,  ibm5170, 0,       n8810m55,  0,     at_state,     init_at,        "Nixdorf Computer AG", "8810 M55", MACHINE_NOT_WORKING )
COMP( 1987, m290,      ibm5170, 0,       atvga,     0,     at_state,     init_at,        "Olivetti",    "M290", MACHINE_NOT_WORKING )
COMP( 1993, lion3500,  ibm5170, 0,       at486,     0,     at_state,     init_at,        "Lion",        "3500", MACHINE_NOT_WORKING )
COMP( 198?, o286foxii, ibm5170, 0,       atvga,     0,     at_state,     init_at,        "Octek",       "Fox II", MACHINE_NOT_WORKING )
//COMP( 1988, nws286,    ibm5170,  0,      ews286,    0,     at_state,     at,        "Nokia Data",  "Nokia Data WS286", MACHINE_NOT_WORKING )