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
|
/**********************************************************************
Commodore 1570/1571/1571CR Single Disk Drive emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
/*
TODO:
- modernize floppy
- add wpt callback to floppy.c
- refactor d64/g64
- refactor 64H156
- 1571CR
- MOS5710
- ICT Mini Chief MC-20
- WD1002A-WX1 ISA controller card
- Seagate ST225 (-chs 615,4,17 -ss 512)
*/
#include "c1541.h"
#include "c1571.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define M6502_TAG "u1"
#define M6522_0_TAG "u9"
#define M6522_1_TAG "u4"
#define M6526_TAG "u20"
#define M5710_TAG "u107"
#define WD1770_TAG "u11"
#define C64H156_TAG "u6"
#define C64H157_TAG "u5"
#define ISA_BUS_TAG "isabus"
enum
{
LED_POWER = 0,
LED_ACT
};
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
const device_type C1570 = &device_creator<c1570_device>;
const device_type C1571 = &device_creator<c1571_device>;
const device_type C1571CR = &device_creator<c1571cr_device>;
const device_type MINI_CHIEF = &device_creator<mini_chief_device>;
//-------------------------------------------------
// device_config_complete - perform any
// operations now that the configuration is
// complete
//-------------------------------------------------
void c1571_device::device_config_complete()
{
switch (m_variant)
{
case TYPE_1570:
m_shortname = "c1570";
break;
default:
case TYPE_1571:
m_shortname = "c1571";
break;
case TYPE_1571CR:
m_shortname = "c1571cr";
break;
case TYPE_MINI_CHIEF:
m_shortname = "minichif";
break;
}
}
//-------------------------------------------------
// ROM( c1570 )
//-------------------------------------------------
ROM_START( c1570 )
ROM_REGION( 0x8000, M6502_TAG, 0 )
ROM_LOAD( "315090-01.u2", 0x0000, 0x8000, CRC(5a0c7937) SHA1(5fc06dc82ff6840f183bd43a4d9b8a16956b2f56) )
ROM_END
//-------------------------------------------------
// ROM( c1571 )
//-------------------------------------------------
ROM_START( c1571 )
ROM_REGION( 0x8000, M6502_TAG, 0 )
ROM_DEFAULT_BIOS("r5")
ROM_SYSTEM_BIOS( 0, "r3", "Revision 3" )
ROMX_LOAD( "310654-03.u2", 0x0000, 0x8000, CRC(3889b8b8) SHA1(e649ef4419d65829d2afd65e07d31f3ce147d6eb), ROM_BIOS(1) )
ROM_SYSTEM_BIOS( 1, "r5", "Revision 5" )
ROMX_LOAD( "310654-05.u2", 0x0000, 0x8000, CRC(5755bae3) SHA1(f1be619c106641a685f6609e4d43d6fc9eac1e70), ROM_BIOS(2) )
ROM_SYSTEM_BIOS( 2, "jiffydos", "JiffyDOS v6.01" )
ROMX_LOAD( "jiffydos 1571.u2", 0x0000, 0x8000, CRC(fe6cac6d) SHA1(d4b79b60cf1eaa399d0932200eb7811e00455249), ROM_BIOS(3) )
ROM_END
//-------------------------------------------------
// ROM( c1571cr )
//-------------------------------------------------
ROM_START( c1571cr )
ROM_REGION( 0x8000, M6502_TAG, 0 )
ROM_DEFAULT_BIOS("cbm")
ROM_SYSTEM_BIOS( 0, "cbm", "Commodore" )
ROMX_LOAD( "318047-01.u102", 0x0000, 0x8000, CRC(f24efcc4) SHA1(14ee7a0fb7e1c59c51fbf781f944387037daa3ee), ROM_BIOS(1) )
ROM_SYSTEM_BIOS( 1, "jiffydos", "JiffyDOS v6.01" )
ROMX_LOAD( "jiffydos 1571d.u102", 0x0000, 0x8000, CRC(9cba146d) SHA1(823b178561302b403e6bfd8dd741d757efef3958), ROM_BIOS(2) )
ROM_END
//-------------------------------------------------
// ROM( minichief )
//-------------------------------------------------
ROM_START( minichief )
ROM_REGION( 0x8000, M6502_TAG, 0 )
ROM_LOAD( "ictdos710.u2", 0x0000, 0x8000, CRC(aaacf7e9) SHA1(c1296995238ef23f18e7fec70a144a0566a25a27) )
ROM_REGION( 0x2000, "wd1002a_wx1", 0 )
ROM_LOAD( "600693-001 type 5.u12", 0x0000, 0x2000, CRC(f3daf85f) SHA1(3bd29538832d3084cbddeec92593988772755283) )
ROM_END
//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
const rom_entry *c1571_device::device_rom_region() const
{
switch (m_variant)
{
case TYPE_1570:
return ROM_NAME( c1570 );
default:
case TYPE_1571:
return ROM_NAME( c1571 );
case TYPE_1571CR:
return ROM_NAME( c1571cr );
case TYPE_MINI_CHIEF:
return ROM_NAME( minichief );
}
}
//-------------------------------------------------
// ADDRESS_MAP( c1571_mem )
//-------------------------------------------------
static ADDRESS_MAP_START( c1571_mem, AS_PROGRAM, 8, c1571_device )
AM_RANGE(0x0000, 0x07ff) AM_RAM
AM_RANGE(0x1800, 0x180f) AM_MIRROR(0x03f0) AM_DEVREADWRITE(M6522_0_TAG, via6522_device, read, write)
AM_RANGE(0x1c00, 0x1c0f) AM_MIRROR(0x03f0) AM_READWRITE(via1_r, via1_w)
AM_RANGE(0x2000, 0x2003) AM_MIRROR(0x1ffc) AM_DEVREADWRITE(WD1770_TAG, wd1770_t, read, write)
AM_RANGE(0x4000, 0x400f) AM_MIRROR(0x3ff0) AM_DEVREADWRITE(M6526_TAG, mos6526_device, read, write)
AM_RANGE(0x8000, 0xffff) AM_ROM AM_REGION(M6502_TAG, 0)
ADDRESS_MAP_END
//-------------------------------------------------
// ADDRESS_MAP( mini_chief_mem )
//-------------------------------------------------
static ADDRESS_MAP_START( mini_chief_mem, AS_PROGRAM, 8, mini_chief_device )
AM_RANGE(0x0000, 0x07ff) AM_RAM
AM_RANGE(0x1800, 0x180f) AM_MIRROR(0x03f0) AM_DEVREADWRITE(M6522_0_TAG, via6522_device, read, write)
AM_RANGE(0x1c00, 0x1c0f) AM_MIRROR(0x03f0) AM_READWRITE(via1_r, via1_w)
AM_RANGE(0x2000, 0x2003) AM_MIRROR(0x1ffc) AM_DEVREADWRITE(WD1770_TAG, wd1770_t, read, write)
AM_RANGE(0x4000, 0x400f) AM_MIRROR(0xff0) AM_DEVREADWRITE(M6526_TAG, mos6526_device, read, write)
AM_RANGE(0x5000, 0x5fff) AM_MIRROR(0x2000) AM_RAM
AM_RANGE(0x6000, 0x6fff) AM_RAM
AM_RANGE(0x8000, 0xffff) AM_ROM AM_REGION(M6502_TAG, 0)
ADDRESS_MAP_END
//-------------------------------------------------
// via6522_interface via0_intf
//-------------------------------------------------
WRITE_LINE_MEMBER( c1571_device::via0_irq_w )
{
m_via0_irq = state;
m_maincpu->set_input_line(INPUT_LINE_IRQ0, (m_via0_irq || m_via1_irq || m_cia_irq) ? ASSERT_LINE : CLEAR_LINE);
}
READ8_MEMBER( c1571_device::via0_pa_r )
{
/*
bit description
PA0 TRK0 SNS
PA1
PA2
PA3
PA4
PA5
PA6
PA7 BYTE RDY
*/
UINT8 data = 0;
// track 0 sense
data |= floppy_tk00_r(m_image);
// byte ready
data |= m_ga->byte_r() << 7;
return data;
}
WRITE8_MEMBER( c1571_device::via0_pa_w )
{
/*
bit description
PA0
PA1 SER DIR
PA2 SIDE
PA3
PA4
PA5 _1/2 MHZ
PA6 ATN OUT
PA7
*/
// fast serial direction
m_ser_dir = BIT(data, 1);
// side select
m_ga->set_side(BIT(data, 2));
// 1/2 MHz
int clock_1_2 = BIT(data, 5);
if (m_1_2mhz != clock_1_2)
{
UINT32 clock = clock_1_2 ? XTAL_16MHz/8 : XTAL_16MHz/16;
m_maincpu->set_unscaled_clock(clock);
m_cia->set_unscaled_clock(clock);
m_via0->set_unscaled_clock(clock);
m_via1->set_unscaled_clock(clock);
m_ga->accl_w(clock_1_2);
m_1_2mhz = clock_1_2;
}
// attention out
m_bus->atn_w(this, !BIT(data, 6));
update_iec();
}
WRITE8_MEMBER( c1571cr_device::via0_pa_w )
{
/*
bit description
PA0
PA1
PA2 SIDE
PA3
PA4
PA5 _1/2 MHZ
PA6
PA7
*/
// side select
m_ga->set_side(BIT(data, 2));
// 1/2 MHz
int clock_1_2 = BIT(data, 5);
if (m_1_2mhz != clock_1_2)
{
UINT32 clock = clock_1_2 ? XTAL_16MHz/8 : XTAL_16MHz/16;
m_maincpu->set_unscaled_clock(clock);
m_cia->set_unscaled_clock(clock);
m_via0->set_unscaled_clock(clock);
m_via1->set_unscaled_clock(clock);
m_ga->accl_w(clock_1_2);
m_1_2mhz = clock_1_2;
}
}
READ8_MEMBER( c1571_device::via0_pb_r )
{
/*
bit description
PB0 DATA IN
PB1
PB2 CLK IN
PB3
PB4
PB5 DEV# SEL
PB6 DEV# SEL
PB7 ATN IN
*/
UINT8 data = 0;
// data in
data = !m_bus->data_r();
// clock in
data |= !m_bus->clk_r() << 2;
// serial bus address
data |= (m_address - 8) << 5;
// attention in
data |= !m_bus->atn_r() << 7;
return data;
}
WRITE8_MEMBER( c1571_device::via0_pb_w )
{
/*
bit description
PB0
PB1 DATA OUT
PB2
PB3 CLK OUT
PB4 ATN ACK
PB5
PB6
PB7
*/
// data out
m_data_out = BIT(data, 1);
// clock out
m_bus->clk_w(this, !BIT(data, 3));
// attention acknowledge
m_ga->atna_w(BIT(data, 4));
update_iec();
}
WRITE8_MEMBER( c1571cr_device::via0_pb_w )
{
/*
bit description
PB0
PB1 DATA OUT
PB2
PB3 CLK OUT
PB4 ATNI
PB5
PB6
PB7
*/
// data out
m_data_out = BIT(data, 1);
// clock out
m_bus->clk_w(this, !BIT(data, 3));
// attention in
m_ga->atni_w(BIT(data, 4));
update_iec();
}
READ_LINE_MEMBER( c1571_device::atn_in_r )
{
return !m_bus->atn_r();
}
READ_LINE_MEMBER( c1571_device::wprt_r )
{
return !floppy_wpt_r(m_image);
}
static const via6522_interface via0_intf =
{
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via0_pa_r),
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via0_pb_r),
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, atn_in_r),
DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, wprt_r),
DEVCB_NULL,
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via0_pa_w),
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via0_pb_w),
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via0_irq_w)
};
static const via6522_interface c1571cr_via0_intf =
{
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via0_pa_r),
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via0_pb_r),
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, atn_in_r),
DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, wprt_r),
DEVCB_NULL,
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571cr_device, via0_pa_w),
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571cr_device, via0_pb_w),
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via0_irq_w)
};
//-------------------------------------------------
// via6522_interface via1_intf
//-------------------------------------------------
READ8_MEMBER( c1571_device::via1_r )
{
UINT8 data = m_via1->read(space, offset);
m_ga->ted_w(!m_1_2mhz);
m_ga->ted_w(1);
return data;
}
WRITE8_MEMBER( c1571_device::via1_w )
{
m_via1->write(space, offset, data);
m_ga->ted_w(!m_1_2mhz);
m_ga->ted_w(1);
}
WRITE_LINE_MEMBER( c1571_device::via1_irq_w )
{
m_via1_irq = state;
m_maincpu->set_input_line(INPUT_LINE_IRQ0, (m_via0_irq || m_via1_irq || m_cia_irq) ? ASSERT_LINE : CLEAR_LINE);
}
READ8_MEMBER( c1571_device::via1_pb_r )
{
/*
bit signal description
PB0
PB1
PB2
PB3
PB4 _WPRT write protect sense
PB5
PB6
PB7 _SYNC SYNC detect line
*/
UINT8 data = 0;
// write protect sense
data |= !floppy_wpt_r(m_image) << 4;
// SYNC detect line
data |= m_ga->sync_r() << 7;
return data;
}
WRITE8_MEMBER( c1571_device::via1_pb_w )
{
/*
bit signal description
PB0 STP0 stepping motor bit 0
PB1 STP1 stepping motor bit 1
PB2 MTR motor ON/OFF
PB3 ACT drive 0 LED
PB4
PB5 DS0 density select 0
PB6 DS1 density select 1
PB7
*/
// spindle motor
m_ga->mtr_w(BIT(data, 2));
// stepper motor
m_ga->stp_w(data & 0x03); // TODO actually STP1=0, STP0=!(PB0^PB1), Y0=PB1, Y2=!PB1
// activity LED
output_set_led_value(LED_ACT, BIT(data, 3));
// density select
m_ga->ds_w((data >> 5) & 0x03);
}
static const via6522_interface via1_intf =
{
DEVCB_DEVICE_MEMBER(C64H156_TAG, c64h156_device, yb_r),
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via1_pb_r),
DEVCB_DEVICE_LINE_MEMBER(C64H156_TAG, c64h156_device, byte_r),
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DEVICE_MEMBER(C64H156_TAG, c64h156_device, yb_w),
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via1_pb_w),
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER(C64H156_TAG, c64h156_device, soe_w),
DEVCB_DEVICE_LINE_MEMBER(C64H156_TAG, c64h156_device, oe_w),
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, via1_irq_w)
};
//-------------------------------------------------
// MOS6526_INTERFACE( cia_intf )
//-------------------------------------------------
WRITE_LINE_MEMBER( c1571_device::cia_irq_w )
{
m_cia_irq = state;
m_maincpu->set_input_line(INPUT_LINE_IRQ0, (m_via0_irq || m_via1_irq || m_cia_irq) ? ASSERT_LINE : CLEAR_LINE);
}
WRITE_LINE_MEMBER( c1571_device::cia_pc_w )
{
if (m_other != NULL)
{
m_other->parallel_strobe_w(state);
}
}
WRITE_LINE_MEMBER( c1571_device::cia_cnt_w )
{
m_cnt_out = state;
update_iec();
}
WRITE_LINE_MEMBER( c1571_device::cia_sp_w )
{
m_sp_out = state;
update_iec();
}
READ8_MEMBER( c1571_device::cia_pb_r )
{
return m_parallel_data;
}
WRITE8_MEMBER( c1571_device::cia_pb_w )
{
if (m_other != NULL)
{
m_other->parallel_data_w(data);
}
}
//-------------------------------------------------
// MOS6526_INTERFACE( mini_chief_cia_intf )
//-------------------------------------------------
READ8_MEMBER( mini_chief_device::cia_pa_r )
{
// TODO read from ISA bus @ 0x320 | A2 A1 A0
return 0;
}
WRITE8_MEMBER( mini_chief_device::cia_pa_w )
{
// TODO write to ISA bus @ 0x320 | A2 A1 A0
}
WRITE8_MEMBER( mini_chief_device::cia_pb_w )
{
/*
bit description
0 ISA A0
1 ISA A1
2 ISA A2
3 ISA /SMEMR
4 ISA /SMEMW
5 ISA RESET
6
7
*/
}
//-------------------------------------------------
// C64H156_INTERFACE( ga_intf )
//-------------------------------------------------
WRITE_LINE_MEMBER( c1571_device::byte_w )
{
m_via1->write_ca1(state);
m_maincpu->set_input_line(M6502_SET_OVERFLOW, state);
}
static C64H156_INTERFACE( ga_intf )
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, byte_w)
};
//-------------------------------------------------
// SLOT_INTERFACE( c1570_floppies )
//-------------------------------------------------
/*
static SLOT_INTERFACE_START( c1570_floppies )
SLOT_INTERFACE( "525ssdd", FLOPPY_525_SSDD )
SLOT_INTERFACE_END
*/
//-------------------------------------------------
// SLOT_INTERFACE( c1571_floppies )
//-------------------------------------------------
/*
static SLOT_INTERFACE_START( c1571_floppies )
SLOT_INTERFACE( "525dd", FLOPPY_525_DD )
SLOT_INTERFACE_END
*/
//-------------------------------------------------
// LEGACY_FLOPPY_OPTIONS( c1571 )
//-------------------------------------------------
static LEGACY_FLOPPY_OPTIONS_START( c1571 )
LEGACY_FLOPPY_OPTION( c1571, "g64", "Commodore 1541 GCR Disk Image", g64_dsk_identify, g64_dsk_construct, NULL, NULL )
LEGACY_FLOPPY_OPTION( c1571, "d64", "Commodore 1541 Disk Image", d64_dsk_identify, d64_dsk_construct, NULL, NULL )
LEGACY_FLOPPY_OPTION( c1571, "d71", "Commodore 1571 Disk Image", d71_dsk_identify, d64_dsk_construct, NULL, NULL )
LEGACY_FLOPPY_OPTIONS_END
//-------------------------------------------------
// floppy_interface c1571_floppy_interface
//-------------------------------------------------
WRITE_LINE_MEMBER( c1571_device::wpt_w )
{
m_via0->write_ca2(!state);
}
static const floppy_interface c1571_floppy_interface =
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, wpt_w),
DEVCB_NULL,
FLOPPY_STANDARD_5_25_DSDD,
LEGACY_FLOPPY_OPTIONS_NAME(c1571),
"floppy_5_25",
NULL
};
//-------------------------------------------------
// floppy_interface c1570_floppy_interface
//-------------------------------------------------
static const floppy_interface c1570_floppy_interface =
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, c1571_device, wpt_w),
DEVCB_NULL,
FLOPPY_STANDARD_5_25_SSDD,
LEGACY_FLOPPY_OPTIONS_NAME(c1541),
"floppy_5_25",
NULL
};
//-------------------------------------------------
// isa8bus_interface isabus_intf
//-------------------------------------------------
static SLOT_INTERFACE_START( mini_chief_isa8_cards )
//SLOT_INTERFACE("wd1002a_wx1", WD1002A_WX1)
SLOT_INTERFACE_END
static const isa8bus_interface isabus_intf =
{
// interrupts
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
// dma request
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
//-------------------------------------------------
// MACHINE_DRIVER( c1570 )
//-------------------------------------------------
static MACHINE_CONFIG_FRAGMENT( c1570 )
MCFG_CPU_ADD(M6502_TAG, M6502, XTAL_16MHz/16)
MCFG_CPU_PROGRAM_MAP(c1571_mem)
MCFG_QUANTUM_PERFECT_CPU(M6502_TAG)
MCFG_VIA6522_ADD(M6522_0_TAG, XTAL_16MHz/16, via0_intf)
MCFG_VIA6522_ADD(M6522_1_TAG, XTAL_16MHz/16, via1_intf)
MCFG_MOS6526_ADD(M6526_TAG, XTAL_16MHz/16, 0, DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_irq_w))
MCFG_MOS6526_SERIAL_CALLBACKS(DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_cnt_w), DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_sp_w))
MCFG_MOS6526_PORT_B_CALLBACKS(DEVREAD8(DEVICE_SELF_OWNER, c1571_device, cia_pb_r), DEVWRITE8(DEVICE_SELF_OWNER, c1571_device, cia_pb_w), DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_pc_w))
MCFG_WD1770x_ADD(WD1770_TAG, XTAL_16MHz/2)
MCFG_LEGACY_FLOPPY_DRIVE_ADD(FLOPPY_0, c1570_floppy_interface)
//MCFG_FLOPPY_DRIVE_ADD(WD1770_TAG":0", c1570_floppies, "525ssdd", 0, c1571_device::floppy_formats)
MCFG_64H156_ADD(C64H156_TAG, XTAL_16MHz, ga_intf)
MACHINE_CONFIG_END
//-------------------------------------------------
// MACHINE_DRIVER( c1571 )
//-------------------------------------------------
static MACHINE_CONFIG_FRAGMENT( c1571 )
MCFG_CPU_ADD(M6502_TAG, M6502, XTAL_16MHz/16)
MCFG_CPU_PROGRAM_MAP(c1571_mem)
MCFG_QUANTUM_PERFECT_CPU(M6502_TAG)
MCFG_VIA6522_ADD(M6522_0_TAG, XTAL_16MHz/16, via0_intf)
MCFG_VIA6522_ADD(M6522_1_TAG, XTAL_16MHz/16, via1_intf)
MCFG_MOS6526_ADD(M6526_TAG, XTAL_16MHz/16, 0, DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_irq_w))
MCFG_MOS6526_SERIAL_CALLBACKS(DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_cnt_w), DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_sp_w))
MCFG_MOS6526_PORT_B_CALLBACKS(DEVREAD8(DEVICE_SELF_OWNER, c1571_device, cia_pb_r), DEVWRITE8(DEVICE_SELF_OWNER, c1571_device, cia_pb_w), DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_pc_w))
MCFG_WD1770x_ADD(WD1770_TAG, XTAL_16MHz/2)
MCFG_LEGACY_FLOPPY_DRIVE_ADD(FLOPPY_0, c1571_floppy_interface)
//MCFG_FLOPPY_DRIVE_ADD(WD1770_TAG":0", c1571_floppies, "525dd", 0, c1571_device::floppy_formats)
MCFG_64H156_ADD(C64H156_TAG, XTAL_16MHz, ga_intf)
MACHINE_CONFIG_END
//-------------------------------------------------
// MACHINE_DRIVER( c1571cr )
//-------------------------------------------------
static MACHINE_CONFIG_FRAGMENT( c1571cr )
MCFG_CPU_ADD(M6502_TAG, M6502, XTAL_16MHz/16)
MCFG_CPU_PROGRAM_MAP(c1571_mem)
MCFG_QUANTUM_PERFECT_CPU(M6502_TAG)
MCFG_VIA6522_ADD(M6522_0_TAG, XTAL_16MHz/16, c1571cr_via0_intf)
MCFG_VIA6522_ADD(M6522_1_TAG, XTAL_16MHz/16, via1_intf)
//MCFG_MOS5710_ADD(M5710_TAG, XTAL_16MHz/16, 0)
MCFG_WD1770x_ADD(WD1770_TAG, XTAL_16MHz/2)
MCFG_LEGACY_FLOPPY_DRIVE_ADD(FLOPPY_0, c1571_floppy_interface)
//MCFG_FLOPPY_DRIVE_ADD(WD1770_TAG":0", c1571_floppies, "525dd", 0, c1571_device::floppy_formats)
MCFG_64H156_ADD(C64H156_TAG, XTAL_16MHz, ga_intf)
MACHINE_CONFIG_END
//-------------------------------------------------
// MACHINE_DRIVER( mini_chief )
//-------------------------------------------------
static MACHINE_CONFIG_FRAGMENT( mini_chief )
MCFG_CPU_ADD(M6502_TAG, M6502, XTAL_16MHz/16)
MCFG_CPU_PROGRAM_MAP(mini_chief_mem)
MCFG_QUANTUM_PERFECT_CPU(M6502_TAG)
MCFG_VIA6522_ADD(M6522_0_TAG, XTAL_16MHz/16, via0_intf)
MCFG_VIA6522_ADD(M6522_1_TAG, XTAL_16MHz/16, via1_intf)
MCFG_MOS6526_ADD(M6526_TAG, XTAL_16MHz/16, 0, DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_irq_w))
MCFG_MOS6526_SERIAL_CALLBACKS(DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_cnt_w), DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_sp_w))
MCFG_MOS6526_PORT_A_CALLBACKS(DEVREAD8(DEVICE_SELF_OWNER, mini_chief_device, cia_pa_r), DEVWRITE8(DEVICE_SELF_OWNER, mini_chief_device, cia_pa_w))
MCFG_MOS6526_PORT_B_CALLBACKS(NULL, DEVWRITE8(DEVICE_SELF_OWNER, c1571_device, cia_pb_w), DEVWRITELINE(DEVICE_SELF_OWNER, c1571_device, cia_pc_w))
MCFG_WD1770x_ADD(WD1770_TAG, XTAL_16MHz/2)
MCFG_LEGACY_FLOPPY_DRIVE_ADD(FLOPPY_0, c1571_floppy_interface)
//MCFG_FLOPPY_DRIVE_ADD(WD1770_TAG":0", c1571_floppies, "525dd", 0, c1571_device::floppy_formats)
MCFG_64H156_ADD(C64H156_TAG, XTAL_16MHz, ga_intf)
MCFG_ISA8_BUS_ADD(ISA_BUS_TAG, M6502_TAG, isabus_intf)
MCFG_ISA8_SLOT_ADD(ISA_BUS_TAG, "isa1", mini_chief_isa8_cards, NULL/*"wd1002a_wx1"*/, NULL, false)
MACHINE_CONFIG_END
//-------------------------------------------------
// machine_config_additions - device-specific
// machine configurations
//-------------------------------------------------
machine_config_constructor c1571_device::device_mconfig_additions() const
{
switch (m_variant)
{
case TYPE_1570:
return MACHINE_CONFIG_NAME( c1570 );
default:
case TYPE_1571:
return MACHINE_CONFIG_NAME( c1571 );
case TYPE_1571CR:
return MACHINE_CONFIG_NAME( c1571cr );
case TYPE_MINI_CHIEF:
return MACHINE_CONFIG_NAME( mini_chief );
}
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// c1571_device - constructor
//-------------------------------------------------
c1571_device::c1571_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, UINT32 variant)
: device_t(mconfig, type, name, tag, owner, clock),
device_cbm_iec_interface(mconfig, *this),
device_c64_floppy_parallel_interface(mconfig, *this),
m_maincpu(*this, M6502_TAG),
m_via0(*this, M6522_0_TAG),
m_via1(*this, M6522_1_TAG),
m_cia(*this, M6526_TAG),
m_fdc(*this, WD1770_TAG),
m_ga(*this, C64H156_TAG),
m_image(*this, FLOPPY_0),
m_1_2mhz(0),
m_data_out(1),
m_ser_dir(0),
m_sp_out(1),
m_cnt_out(1),
m_via0_irq(CLEAR_LINE),
m_via1_irq(CLEAR_LINE),
m_cia_irq(CLEAR_LINE),
m_variant(variant)
{
}
c1571_device::c1571_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, C1571, "C1571", tag, owner, clock),
device_cbm_iec_interface(mconfig, *this),
device_c64_floppy_parallel_interface(mconfig, *this),
m_maincpu(*this, M6502_TAG),
m_via0(*this, M6522_0_TAG),
m_via1(*this, M6522_1_TAG),
m_cia(*this, M6526_TAG),
m_fdc(*this, WD1770_TAG),
m_ga(*this, C64H156_TAG),
m_image(*this, FLOPPY_0),
m_1_2mhz(0),
m_data_out(1),
m_ser_dir(0),
m_sp_out(1),
m_cnt_out(1),
m_via0_irq(CLEAR_LINE),
m_via1_irq(CLEAR_LINE),
m_cia_irq(CLEAR_LINE),
m_variant(TYPE_1571)
//m_floppy(*this, WD1770_TAG":0:525dd")
{
}
//-------------------------------------------------
// c1570_device - constructor
//-------------------------------------------------
c1570_device::c1570_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: c1571_device(mconfig, C1570, "C1570", tag, owner, clock, TYPE_1570)
//m_floppy(*this, WD1770_TAG":0:525ssdd")
{
}
//-------------------------------------------------
// c1571cr_device - constructor
//-------------------------------------------------
c1571cr_device::c1571cr_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: c1571_device(mconfig, C1571CR, "C1571CR", tag, owner, clock, TYPE_1571CR)
//m_floppy(*this, WD1770_TAG":0:525dd")
{
}
//-------------------------------------------------
// mini_chief_device - constructor
//-------------------------------------------------
mini_chief_device::mini_chief_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: c1571_device(mconfig, MINI_CHIEF, "ICT Mini Chief", tag, owner, clock, TYPE_MINI_CHIEF)
//m_floppy(*this, WD1770_TAG":0:525dd")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void c1571_device::device_start()
{
// install image callbacks
m_ga->set_floppy(m_image);
//m_fdc->set_floppy(m_floppy);
// register for state saving
save_item(NAME(m_1_2mhz));
save_item(NAME(m_data_out));
save_item(NAME(m_ser_dir));
save_item(NAME(m_sp_out));
save_item(NAME(m_cnt_out));
save_item(NAME(m_via0_irq));
save_item(NAME(m_via1_irq));
save_item(NAME(m_cia_irq));
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void c1571_device::device_reset()
{
m_maincpu->reset();
m_via0->reset();
m_via1->reset();
m_cia->reset();
m_fdc->reset();
m_fdc->dden_w(0);
m_sp_out = 1;
m_cnt_out = 1;
update_iec();
}
//-------------------------------------------------
// cbm_iec_srq -
//-------------------------------------------------
void c1571_device::cbm_iec_srq(int state)
{
update_iec();
}
//-------------------------------------------------
// cbm_iec_atn -
//-------------------------------------------------
void c1571_device::cbm_iec_atn(int state)
{
update_iec();
}
//-------------------------------------------------
// cbm_iec_data -
//-------------------------------------------------
void c1571_device::cbm_iec_data(int state)
{
update_iec();
}
//-------------------------------------------------
// cbm_iec_reset -
//-------------------------------------------------
void c1571_device::cbm_iec_reset(int state)
{
if (!state)
{
device_reset();
}
}
//-------------------------------------------------
// parallel_data_w -
//-------------------------------------------------
void c1571_device::parallel_data_w(UINT8 data)
{
m_parallel_data = data;
}
//-------------------------------------------------
// parallel_strobe_w -
//-------------------------------------------------
void c1571_device::parallel_strobe_w(int state)
{
m_cia->flag_w(state);
}
//-------------------------------------------------
// update_iec -
//-------------------------------------------------
void c1571_device::update_iec()
{
m_cia->cnt_w(m_ser_dir || m_bus->srq_r());
m_cia->sp_w(m_ser_dir || m_bus->data_r());
int atn = m_bus->atn_r();
m_via0->write_ca1(!atn);
m_ga->atni_w(!atn);
// serial data
int data = !m_data_out && !m_ga->atn_r();
if (m_ser_dir) data &= m_sp_out;
m_bus->data_w(this, data);
// fast clock
int srq = 1;
if (m_ser_dir) srq &= m_cnt_out;
m_bus->srq_w(this, srq);
}
|