summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/sms.c
blob: f93674b584cf217411f625d8e673a9860b811e35 (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
// license:BSD-3-Clause
// copyright-holders:Wilbert Pol, Charles MacDonald,Mathis Rosenhauer,Brad Oliver,Michael Luong,Fabio Priuli,Enik Land
/******************************************************************************
 Contributors:

    Marat Fayzullin (MG source)
    Charles MacDonald
    Mathis Rosenhauer
    Brad Oliver
    Michael Luong
    Wilbert Pol
    Fabio Priuli
    Enik Land

 To do:

 - SIO interface for Game Gear (needs netplay, I guess)
 - Support for other DE-9 compatible controllers, like the Mega Drive 6-Button
   that has homebrew software support
 - Sega SK-1100 keyboard support for Sega Mark III (sg1000m3 driver)
 - Link between two Mark III's through keyboard, supported by F-16 Fighting Falcon
 - Mark III expansion slot, used by keyboard and FM Sound Unit
 - Verify if the SN76489 chip can be disabled on sg1000m3 and sms1krfm consoles
 - Rapid button of smsj, sms1krfm and sms1kr consoles
 - Software compatibility flags, by region and/or BIOS
 - Samsung modem for Gam*Boy Securities Information Service System
 - Sega Demo Unit II (kiosk expansion device)
 - SMS 8 slot game changer (kiosk expansion device)
 - SMS Disk System (floppy disk drive expansion device) - unreleased
 - Emulate SRAM cartridges? (for use with Bock's dump tool)

 The Game Gear SIO hardware is not emulated but has some
 placeholders in 'machine/sms.c'

 Changes:
    Apr 02 - Added raster palette effects for SMS & GG (ML)
                 - Added sprite collision (ML)
                 - Added zoomed sprites (ML)
    May 02 - Fixed paging bug (ML)
                 - Fixed sprite and tile priority bug (ML)
                 - Fixed bug #66 (ML)
                 - Fixed bug #78 (ML)
                 - try to implement LCD persistence emulation for GG (ML)
    Jun 10, 02 - Added bios emulation (ML)
    Jun 12, 02 - Added PAL & NTSC systems (ML)
    Jun 25, 02 - Added border emulation (ML)
    Jun 27, 02 - Version bits for Game Gear (bits 6 of port 00) (ML)
    Nov-Dec, 05 - Numerous cleanups, fixes, updates (WP)
    Mar, 07 - More cleanups, fixes, mapper additions, etc (WP)

--------------------------------------------------------------------------------

General compatibility issues on real hardware (not emulation bugs):

- Some ROMs have issues or don't work when running on a console of different
  region;
- Many Japanese, Korean and homebrew ROMs don't have the signature required by
  BIOSes of consoles sold overseas;
- Paddle games need to detect the system region as Japanese to work with the
  Paddle controller;
- Few games of the ones with FM support need to detect the system region as
  Japanese to play FM sound;
- The Light Phaser gun doesn't work with the Japanese SMS;
- There are reports about Light Phaser working on the second Korean SMS
  version, and a Korean advert shows support on the first version (Gam*Boy I,
  although based on Japanese SMS);
- The Korean SMS versions have Japanese-format cartridge slot, but only on the
  first (Gam*Boy I) the region is detected as Japanese;
- Some SMS ROMs don't run when are plugged-in to SMS expansion slot, through
  the gender adapter;
- Some SMS ROMs don't run or have issues when are plugged-in to a Game Gear,
  through the Master Gear adapter;

--------------------------------------------------------------------------------

Sega Master System II
Sega 1990

This particular version was manufactured between July 1991 and October 1992
The PCB is stamped '17 AUG 1991'

PCB Layout
----------
171-5922A
(C) SEGA 1990
IC BD M4Jr. PAL
|----------|------|-----------------------|
| POWER_IN |RF_OUT|       IC1  IC2   IC3  |
|          |      |       Z80  BIOS  6264 |
|          |      | IC9                   |
|          |------| CXA1145               |
|                                         |
|                                         |
|IC8                                      |
|7805                                     |
|                   |---------------|     |
|                   |   CART SLOT   |     |
|                   |---------------|     |
|                                         |
|                                         |
| PAUSE_SW                                |
|                                         |
|      IC6       IC5            IC4       |
|      D4168     315-5246       315-5237  |
|                                         |
|      IC7                                |
|      D4168                              |
|                                         |
| POWER_SW           JOY1 JOY2  53.2034MHz|
|-----------------------------------------|
Notes: (All ICs shown)
       IC1 Z80      - Z0840004PSC Z80 CPU (DIP40). Clock input 3.54689MHz (53.2034/15)
       IC2 BIOS     - 1M 28-pin mask ROM marked MPR-12808 (DIP28)
       IC3 6264     - Samsung KM6264 8k x8 SRAM. Some models have NEC D4168 or Sanyo LC3664 which are compatible (DIP28)
       IC4 315-5237 - Custom Sega I/O controller IC (DIP48)
                      Clocks - Pin 43 - master clock input 53.2034MHz from OSC
                               Pin 41 - 10.6406MHz (53.2034/5)
                               Pin 42 - 4.43361MHz (53.2034/12)
       IC5 315-5246 - Custom Sega Video Display Processor (VDP) (64 pin flat pack)
                      The VDP also contains a Texas Instruments SN76489 sound chip
                      Clocks - Pin 33 - 3.54689MHz (53.2034/15)
                               Pin 34 - 10.6406MHz (53.2034/5)
                               Pin 35 - 10.6406MHz (53.2034/5)
                               Pin 39 - 2.66017MHz (53.2034/20)
       IC6/IC7 D4168- NEC D4168 8k x8 SRAM (DIP28)
       IC8 7805     - Motorola MC7805 voltage regulator (7v to 25v input, 5v output)
       IC9 CXA1145  - Sony CXA1145 RGB to composite video encoder IC (DIP24)
       POWER_IN     - Power input from AC/DC power pack. System requires 9VDC at 500mA. Center pin is negative and
                      outer barrel is positive. Note this is opposite to regular DC power packs
       RF_OUT       - RF modulator with RF signal output to TV
       POWER_SW     - Power on/off switch
       PAUSE_SW     - Push button used to pause the game
       JOY1/JOY2    - Joystick connectors (DB9)
       HSync        - 15.5565kHz
       VSync        - 49.7015Hz


Cart PCB Examples
-----------------
Note! There are many more types of PCBs & custom chip matching variations. This document
is not meant to provide all details of every type in existence. Some games have been
found on different types of ROM boards with and without bankswitching hardware.

Type with no bankswitching hardware

171-5519 \ no visible difference?
171-5519D/
|------------------|
||----------|      |
||  DIP28   |      |
||----------|      |
|IC1               |
|------------------|
Notes:
      DIP28 - 1M mask ROM (DIP28) at location IC1. Actual ROM type is Fujitsu MB831001
              This ROM has a built-in mapper so no bankswitching chip is required.
              The CPU uses pin 22 of the ROM to bankswitch it.
              Found in....
                          Game Name         Sega ROM ID
                          -----------------------------
                          World Grand Prix  MPR-11074
                          Black Belt        MPR-10150
                          Ghost House       MPR-12586


Types with bankswitching hardware

171-5713D (uses 315-5235)
171-5838 (uses 315-5365)
171-5893 (uses 315-5365)
|------------------|
|                  |
|  |------------|  |
|  |   SDIP42   |  |
|  |------------|  |
|               IC1|
||----------|      |
||  DIP32   |      |
||----------|      |
|IC2               |
|------------------|
Notes:
     SDIP42 - Custom Sega bankswitch chip at location IC1. There are several different
              types of these chips with different 315-xxxx numbers
              These include 315-5235 (DIP42), 315-5208 (DIP28) and 315-5365 (DIP42) and possibly others.
      DIP32 - 1MBit/2MBit/4MBit mask ROM (DIP32) at location IC2
              Actual ROM type can be 831000, 831001, 832011, 834000, 834011
              Found in....
                          Game Name         Sega ROM ID   Bank Chip
                          -----------------------------------------
                          Spellcaster       MPR-12532-T   315-5365
                          Altered Beast     MPR-12534     315-5235
                          Bubble Bobble     MPR-14177     315-5365

171-5442 (uses 315-5235)
|--------------------------|
|  |----------------|      |
|  |     DIP40      |      |
|  |----------------|IC2   |
|                          |
|      |------------|      |
|      |   SDIP42   |      |
|      |------------|IC1   |
|----|                |----|
     |                |
     |----------------|
Notes:
      SDIP42 - Custom Sega bankswitch chip at location IC1. There are several different
               types of these chips with different 315-xxxx numbers
               These include 315-5235 (DIP42), 315-5208 (DIP28) and 315-5365 (DIP42) and possibly others.
       DIP40 - 2MBit/4Mbit 16-bit mask ROM (DIP40) at location IC2
               Found in....
                           Game Name         Sega ROM ID   Bank Chip
                           -----------------------------------------
                           Space Harrier     MPR-10410     315-5235

Another ROM board 171-5497 used by Monopoly has 315-5235 DIP42 mapper chip, DIP28 mask ROM, a DIP8 chip (unknown),
DIP28 SRAM (likely 8k) and a 3V coin battery.
Yet another type of ROM board with unknown PCB number used by Phantasy Star has 315-5235 DIP42 mapper chip, DIP32 mask
ROM and DIP28 SRAM (likely 8k) and a 3V coin battery.
Unfortunatley the majority of these ROM boards, ROM types and MPR-xxxxx Sega part numbers are undocumented because they
were mostly dumped from the edge connector without being opened.
Some additional info can be found at http://www.smspower.org/Development/Index
Some excellent SMS documentation can be found at http://cgfm2.emuviews.com/sms.php

--------------------------------------------------------------------------------
SMS Store Unit memory map for the second CPU:

0000-3FFF - BIOS
4000-47FF - RAM
8000      - System Control Register (R/W)
            Reading:
            bit7      - ready (0 = ready, 1 = not ready)
            bit6      - active timer bit switch (0 = timer 2, 1 = timer 1)
            bit5      - unknown
            bit4-bit3 - timer 2 length bit switches (10s-25s)
            bit2-bit0 - timer 1 length bit switches (30s-135s)
            Writing:
            bit7-bit4 - led of selected game to set
            bit3      - unknown, 1 seems to be written all the time
            bit2      - unknown, 1 seems to be written all the time
            bit1      - reset signal for sms cpu, 0 = reset low, 1 = reset high
            bit0      - which cpu receives interrupt signals, 0 = sms cpu, 1 = controlling cpu
C000      - Card/Cartridge selction register (W)
            bit7-bit4 - slot to select
            bit3      - slot type (0 = cartridge, 1 = card ?)
            bit2-bit0 - unknown
C400      - ???? (used once)
D800      - Selection buttons #1, 1-8 (R)
DC00      - Selection buttons #2, 9-16 (R)

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

#include "emu.h"
#include "cpu/z80/z80.h"
#include "sound/sn76496.h"
#include "sound/2413intf.h"
#include "video/315_5124.h"
#include "includes/sms.h"

#include "sms1.lh"

#define MASTER_CLOCK_PAL    53203425    /* 12 * subcarrier freq. (4.43361875MHz) */


static ADDRESS_MAP_START( sms1_mem, AS_PROGRAM, 8, sms_state )
	AM_RANGE(0x0000, 0xbfff) AM_WRITE(write_cart)
	AM_RANGE(0x0000, 0x3fff) AM_READ(read_0000)
	AM_RANGE(0x4000, 0x7fff) AM_READ(read_4000)
	AM_RANGE(0x8000, 0xbfff) AM_READ(read_8000)
	AM_RANGE(0xc000, 0xfff7) AM_READWRITE(read_ram, write_ram)
	AM_RANGE(0xfff8, 0xfffb) AM_READWRITE(sms_sscope_r, sms_sscope_w)       /* 3-D glasses */
	AM_RANGE(0xfffc, 0xffff) AM_READWRITE(sms_mapper_r, sms_mapper_w)       /* Bankswitch control */
ADDRESS_MAP_END

static ADDRESS_MAP_START( sms_mem, AS_PROGRAM, 8, sms_state )
	AM_RANGE(0x0000, 0xbfff) AM_WRITE(write_cart)
	AM_RANGE(0x0000, 0x3fff) AM_READ(read_0000)
	AM_RANGE(0x4000, 0x7fff) AM_READ(read_4000)
	AM_RANGE(0x8000, 0xbfff) AM_READ(read_8000)
	AM_RANGE(0xc000, 0xfff7) AM_READWRITE(read_ram, write_ram)
	AM_RANGE(0xfffc, 0xffff) AM_READWRITE(sms_mapper_r, sms_mapper_w)       /* Bankswitch control */
ADDRESS_MAP_END

static ADDRESS_MAP_START( sms_store_mem, AS_PROGRAM, 8, smssdisp_state )
	AM_RANGE(0x0000, 0x3fff) AM_ROM                     /* BIOS */
	AM_RANGE(0x4000, 0x47ff) AM_RAM                     /* RAM */
	AM_RANGE(0x6000, 0x7fff) AM_READ(store_cart_peek)
	AM_RANGE(0x8000, 0x8000) AM_READ_PORT("DSW") AM_WRITE(sms_store_control_w) /* Control */
	AM_RANGE(0xc000, 0xc000) AM_READWRITE(sms_store_cart_select_r, sms_store_cart_select_w) /* cartridge/card slot selector */
	AM_RANGE(0xd800, 0xd800) AM_READ_PORT("GAMESEL1")         /* Game selector port #1 */
	AM_RANGE(0xdc00, 0xdc00) AM_READ_PORT("GAMESEL2")         /* Game selector port #2 */
ADDRESS_MAP_END

// I/O ports $3E and $3F do not exist on Mark III
static ADDRESS_MAP_START( sg1000m3_io, AS_IO, 8, sms_state )
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x40, 0x7f)                 AM_READWRITE(sms_count_r, sms_psg_w)
	AM_RANGE(0x80, 0x80) AM_MIRROR(0x3e) AM_DEVREADWRITE("sms_vdp", sega315_5124_device, vram_read, vram_write)
	AM_RANGE(0x81, 0x81) AM_MIRROR(0x3e) AM_DEVREADWRITE("sms_vdp", sega315_5124_device, register_read, register_write)
	AM_RANGE(0xc0, 0xc0) AM_MIRROR(0x1e) AM_READ(sms_input_port_dc_r)
	AM_RANGE(0xc1, 0xc1) AM_MIRROR(0x1e) AM_READ(sms_input_port_dd_r)
	AM_RANGE(0xe0, 0xe0) AM_MIRROR(0x0e) AM_READ(sms_input_port_dc_r)
	AM_RANGE(0xe1, 0xe1) AM_MIRROR(0x0e) AM_READ(sms_input_port_dd_r)
	AM_RANGE(0xf0, 0xf0)                 AM_READWRITE(sms_input_port_dc_r, sms_ym2413_register_port_w)
	AM_RANGE(0xf1, 0xf1)                 AM_READWRITE(sms_input_port_dd_r, sms_ym2413_data_port_w)
	AM_RANGE(0xf2, 0xf2)                 AM_READWRITE(sms_audio_control_r, sms_audio_control_w)
	AM_RANGE(0xf3, 0xf3)                 AM_READ(sms_input_port_dd_r)
	AM_RANGE(0xf4, 0xf4) AM_MIRROR(0x02) AM_READ(sms_input_port_dc_r)
	AM_RANGE(0xf5, 0xf5) AM_MIRROR(0x02) AM_READ(sms_input_port_dd_r)
	AM_RANGE(0xf8, 0xf8) AM_MIRROR(0x06) AM_READ(sms_input_port_dc_r)
	AM_RANGE(0xf9, 0xf9) AM_MIRROR(0x06) AM_READ(sms_input_port_dd_r)
ADDRESS_MAP_END


static ADDRESS_MAP_START( sms_io, AS_IO, 8, sms_state )
	AM_IMPORT_FROM(sg1000m3_io)
	AM_RANGE(0x00, 0x00) AM_MIRROR(0x3e) AM_WRITE(sms_mem_control_w)
	AM_RANGE(0x01, 0x01) AM_MIRROR(0x3e) AM_WRITE(sms_io_control_w)
ADDRESS_MAP_END


// It seems the Korean versions do some more strict decoding on the I/O
// addresses.
// At least the mirrors for I/O ports $3E/$3F don't seem to exist there.
// Enri's doc ( http://www43.tok2.com/home/cmpslv/Sms/EnrSms.htm ) about
// the Japanese SMS also doesn't mention them.
// Leaving the mirrors breaks the Korean cartridge bublboky.
static ADDRESS_MAP_START( smsj_io, AS_IO, 8, sms_state )
	AM_IMPORT_FROM(sg1000m3_io)
	AM_RANGE(0x3e, 0x3e)                 AM_WRITE(sms_mem_control_w)
	AM_RANGE(0x3f, 0x3f)                 AM_WRITE(sms_io_control_w)
ADDRESS_MAP_END


// The first Korean SMS version also seems to lack I/O port $3F. Games execute
// a region detection procedure that, through that port, sets the mode used by
// the TH bits of port $DD and tests their behavior. The region of the first SMS
// version is detected as Japanese (opposite to the second version). However,
// as it supports Light Phaser games, it doesn't have the same behavior of the
// Japanese SMS. If it had the behavior of other SMS versions, the system
// region would be detected as Export, so it probably lacks the port.
static ADDRESS_MAP_START( sms1kr_io, AS_IO, 8, sms_state )
	AM_IMPORT_FROM(sg1000m3_io)
	AM_RANGE(0x3e, 0x3e)                 AM_WRITE(sms_mem_control_w)
ADDRESS_MAP_END


// It seems the mirrors for I/O ports $3E/$3F also don't seem to exist on the
// Game Gear. Leaving the mirrors breaks 'gloc' (it freezes after 1st stage).
static ADDRESS_MAP_START( gg_io, AS_IO, 8, sms_state )
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x00, 0x00)                 AM_READ(gg_input_port_00_r)
	AM_RANGE(0x01, 0x05)                 AM_READWRITE(gg_sio_r, gg_sio_w)
	AM_RANGE(0x06, 0x06)                 AM_WRITE(gg_psg_stereo_w)
	AM_RANGE(0x3e, 0x3e)                 AM_WRITE(sms_mem_control_w)
	AM_RANGE(0x3f, 0x3f)                 AM_WRITE(sms_io_control_w)
	AM_RANGE(0x40, 0x7f)                 AM_READWRITE(sms_count_r, gg_psg_w)
	AM_RANGE(0x80, 0x80) AM_MIRROR(0x3e) AM_DEVREADWRITE("sms_vdp", sega315_5124_device, vram_read, vram_write)
	AM_RANGE(0x81, 0x81) AM_MIRROR(0x3e) AM_DEVREADWRITE("sms_vdp", sega315_5124_device, register_read, register_write)
	AM_RANGE(0xc0, 0xc0)                 AM_READ(sms_input_port_dc_r)
	AM_RANGE(0xc1, 0xc1)                 AM_READ(sms_input_port_dd_r)
	AM_RANGE(0xdc, 0xdc)                 AM_READ(sms_input_port_dc_r)
	AM_RANGE(0xdd, 0xdd)                 AM_READ(sms_input_port_dd_r)
ADDRESS_MAP_END


static INPUT_PORTS_START( sms )
	PORT_START("PAUSE")
	PORT_BIT( 0x7f, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME(DEF_STR(Pause)) PORT_CODE(KEYCODE_1)
INPUT_PORTS_END

static INPUT_PORTS_START( sg1000m3 )
	PORT_INCLUDE( sms )

	PORT_START("SEGASCOPE")
	PORT_CONFNAME( 0x01, 0x00, "SegaScope (3-D Glasses)" )
	PORT_CONFSETTING( 0x00, DEF_STR( Off ) )
	PORT_CONFSETTING( 0x01, DEF_STR( On ) )

	PORT_START("SSCOPE_BINOCULAR")
	PORT_CONFNAME( 0x03, 0x00, "SegaScope - Binocular Hack" ) PORT_CONDITION("SEGASCOPE", 0x01, EQUALS, 0x01)
	PORT_CONFSETTING( 0x00, DEF_STR( Off ) )
	PORT_CONFSETTING( 0x01, "Left Lens" )
	PORT_CONFSETTING( 0x02, "Right Lens" )
	PORT_CONFSETTING( 0x03, "Both Lens" )
	PORT_BIT( 0x03, 0x00, IPT_UNUSED ) PORT_CONDITION("SEGASCOPE", 0x01, EQUALS, 0x00)
INPUT_PORTS_END

static INPUT_PORTS_START( sms1 )
	PORT_INCLUDE( sg1000m3 )

	PORT_START("RESET")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SERVICE2 ) PORT_NAME("Reset Button")
INPUT_PORTS_END

static INPUT_PORTS_START( smsj )
	PORT_INCLUDE( sg1000m3 )

	//PORT_START("RAPID")
	//PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SERVICE2 ) PORT_NAME("Rapid Button") /* Not implemented */
INPUT_PORTS_END

static INPUT_PORTS_START( smssdisp )
	// For each peripheral port (for controllers or 3-D glasses), there are sets
	// of two connectors wired in parallel on the real hardware. This allows to
	// have different controllers, like a pad and a Light Phaser, plugged together
	// for a player input, what avoids having to re-plug them every time a game is
	// changed to another that requires a different controller. Also, this allows
	// 3-D games to be properly watched by two persons at same time.
	// For now the driver just uses single input ports.
	PORT_INCLUDE( sms1 )

	PORT_START("DSW")
	PORT_DIPNAME( 0x07, 0x07, "Timer 1 length" )
	PORT_DIPSETTING( 0x00, "135s" )
	PORT_DIPSETTING( 0x01, "120s" )
	PORT_DIPSETTING( 0x02, "105s" )
	PORT_DIPSETTING( 0x03, "90s" )
	PORT_DIPSETTING( 0x04, "75s" )
	PORT_DIPSETTING( 0x05, "60s" )
	PORT_DIPSETTING( 0x06, "45s" )
	PORT_DIPSETTING( 0x07, "30s" )
	PORT_DIPNAME( 0x18, 0x18, "Timer 2 length" )
	PORT_DIPSETTING( 0x00, "25s" )
	PORT_DIPSETTING( 0x08, "20s" )
	PORT_DIPSETTING( 0x10, "15s" )
	PORT_DIPSETTING( 0x18, "10s" )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
	PORT_DIPSETTING( 0x00, DEF_STR( On ) )
	PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
	PORT_DIPNAME( 0x40, 0x40, "Select Timer" )
	PORT_DIPSETTING( 0x00, "Timer 2" )
	PORT_DIPSETTING( 0x40, "Timer 1" )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )   // READY, must be high

	PORT_START("GAMESEL1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 03") PORT_CODE(KEYCODE_N)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 02") PORT_CODE(KEYCODE_H)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 01") PORT_CODE(KEYCODE_Y)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 00") PORT_CODE(KEYCODE_6)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 07") PORT_CODE(KEYCODE_M)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 06") PORT_CODE(KEYCODE_J)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 05") PORT_CODE(KEYCODE_U)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 04") PORT_CODE(KEYCODE_7)

	PORT_START("GAMESEL2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 11") PORT_CODE(KEYCODE_COMMA)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 10") PORT_CODE(KEYCODE_K)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 09") PORT_CODE(KEYCODE_I)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 08") PORT_CODE(KEYCODE_8)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 15") PORT_CODE(KEYCODE_STOP)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 14") PORT_CODE(KEYCODE_L)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 13") PORT_CODE(KEYCODE_O)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Game 12") PORT_CODE(KEYCODE_9)
INPUT_PORTS_END

static INPUT_PORTS_START( gg )
	PORT_START("GG_PORT_DC")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1) PORT_8WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1) PORT_8WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1) PORT_8WAY
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_8WAY
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("START")
	PORT_BIT( 0x7f, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START ) PORT_NAME("Start") /* Game Gear START */

	PORT_START("PERSISTENCE")
	PORT_CONFNAME( 0x01, 0x01, "LCD Persistence Hack" )
	PORT_CONFSETTING( 0x00, DEF_STR( Off ) )
	PORT_CONFSETTING( 0x01, DEF_STR( On ) )
INPUT_PORTS_END


WRITE_LINE_MEMBER(sms_state::sms_int_callback)
{
	m_maincpu->set_input_line(0, state);
}


static MACHINE_CONFIG_START( sms_ntsc_base, sms_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", Z80, XTAL_53_693175MHz/15)
	MCFG_CPU_PROGRAM_MAP(sms_mem)
	MCFG_CPU_IO_MAP(sms_io)

	MCFG_QUANTUM_TIME(attotime::from_hz(60))

	MCFG_MACHINE_START_OVERRIDE(sms_state,sms)
	MCFG_MACHINE_RESET_OVERRIDE(sms_state,sms)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_SOUND_ADD("segapsg", SEGAPSG, XTAL_53_693175MHz/15)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)

	MCFG_SMS_CARTRIDGE_ADD("slot", sms_cart, NULL)

	MCFG_SOFTWARE_LIST_ADD("cart_list","sms")

	MCFG_SMS_CONTROL_PORT_ADD(CONTROL1_TAG, sms_control_port_devices, "joypad")
	MCFG_SMS_CONTROL_PORT_TH_INPUT_HANDLER(WRITELINE(sms_state, sms_ctrl1_th_input))
	MCFG_SMS_CONTROL_PORT_PIXEL_HANDLER(READ32(sms_state, sms_pixel_color))

	MCFG_SMS_CONTROL_PORT_ADD(CONTROL2_TAG, sms_control_port_devices, "joypad")
	MCFG_SMS_CONTROL_PORT_TH_INPUT_HANDLER(WRITELINE(sms_state, sms_ctrl2_th_input))
	MCFG_SMS_CONTROL_PORT_PIXEL_HANDLER(READ32(sms_state, sms_pixel_color))
MACHINE_CONFIG_END

/*
    For SMS drivers, the ratio between CPU and pixel clocks, set through dividers, is 2/3. The
    division that sets the pixel clock, in MCFG_SCREEN_RAW_PARAMS(), results in a remainder
    that is discarded internally. Due to this rounding, the cycle time and the screen pixel
    time, derived from their clocks, do not longer match (inversely) the exact original ratio
    of these clocks. The SMS VDP emulation controls some properties (counters/flags) through
    screen timing, that the core calculates based on the emulation time. The VDP properties
    are read in the CPU timeslice. When a CPU operation that access the VDP is executed, the
    elapsed emulation time is also based on how many CPU cycles have elapsed since start of
    the current timeslice. Depending on this amount of CPU cycles, when the core divides the
    elapsed time by the pixel time, the obtained pixel count may be less than expected. Flubba's
    VDPTest ROM relies on exact results. A workaround is to use an additional macro, for each
    driver, that resets the refresh rate, and by consequence the pixel time, without discarding
    the remainder of the division. If the core is fixed in the future, the MCFG_SCREEN_REFRESH_RATE
    lines after each MCFG_SCREEN_RAW_PARAMS call below can be removed.
*/

static MACHINE_CONFIG_DERIVED( sms2_ntsc, sms_ntsc_base )
	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_RAW_PARAMS(XTAL_53_693175MHz/10, \
		SEGA315_5124_WIDTH , SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH - 2, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 256 + 10, \
		SEGA315_5124_HEIGHT_NTSC, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_224_TBORDER_HEIGHT, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_224_TBORDER_HEIGHT + 224)
	MCFG_SCREEN_REFRESH_RATE((double) XTAL_53_693175MHz/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_NTSC))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_sms)

	MCFG_DEVICE_ADD("sms_vdp", SEGA315_5246, 0)
	MCFG_SEGA315_5246_SET_SCREEN("screen")
	MCFG_SEGA315_5246_IS_PAL(false)
	MCFG_SEGA315_5246_INT_CB(WRITELINE(sms_state, sms_int_callback))
	MCFG_SEGA315_5246_PAUSE_CB(WRITELINE(sms_state, sms_pause_callback))
MACHINE_CONFIG_END


static MACHINE_CONFIG_DERIVED( sms1_ntsc, sms_ntsc_base )

	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_PROGRAM_MAP(sms1_mem)  // This adds the SegaScope handlers for 3-D glasses
	MCFG_CPU_IO_MAP(sms_io)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_RAW_PARAMS(XTAL_53_693175MHz/10, \
		SEGA315_5124_WIDTH, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH - 2, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 256 + 10, \
		SEGA315_5124_HEIGHT_NTSC, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_224_TBORDER_HEIGHT, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_224_TBORDER_HEIGHT + 224)
	MCFG_SCREEN_REFRESH_RATE((double) XTAL_53_693175MHz/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_NTSC))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_sms1)

	MCFG_SCREEN_ADD("left_lcd", LCD)    // This is needed for SegaScope Left LCD
	MCFG_SCREEN_RAW_PARAMS(XTAL_53_693175MHz/10, \
		SEGA315_5124_WIDTH, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH - 2, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 256 + 10, \
		SEGA315_5124_HEIGHT_NTSC, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_224_TBORDER_HEIGHT, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_224_TBORDER_HEIGHT + 224)
	MCFG_SCREEN_REFRESH_RATE((double) XTAL_53_693175MHz/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_NTSC))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_sms1)

	MCFG_SCREEN_ADD("right_lcd", LCD)   // This is needed for SegaScope Right LCD
	MCFG_SCREEN_RAW_PARAMS(XTAL_53_693175MHz/10, \
		SEGA315_5124_WIDTH, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH - 2, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 256 + 10, \
		SEGA315_5124_HEIGHT_NTSC, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_224_TBORDER_HEIGHT, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_224_TBORDER_HEIGHT + 224)
	MCFG_SCREEN_REFRESH_RATE((double) XTAL_53_693175MHz/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_NTSC))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_sms1)

	MCFG_SCREEN_VBLANK_DRIVER(sms_state, screen_vblank_sms1)

	MCFG_DEFAULT_LAYOUT(layout_sms1)

	MCFG_VIDEO_START_OVERRIDE(sms_state,sms1)
	MCFG_VIDEO_RESET_OVERRIDE(sms_state,sms1)

	MCFG_DEVICE_ADD("sms_vdp", SEGA315_5124, 0)
	MCFG_SEGA315_5124_SET_SCREEN("screen")
	MCFG_SEGA315_5124_IS_PAL(false)
	MCFG_SEGA315_5124_INT_CB(WRITELINE(sms_state, sms_int_callback))
	MCFG_SEGA315_5124_PAUSE_CB(WRITELINE(sms_state, sms_pause_callback))

	// card and expansion slots, not present in Master System II
	MCFG_SMS_CARD_ADD("mycard", sms_cart, NULL)
	MCFG_SMS_EXPANSION_ADD("exp", sms_expansion_devices, NULL)
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED_CLASS( sms_sdisp, sms1_ntsc, smssdisp_state )

	MCFG_DEVICE_MODIFY("sms_vdp")
	MCFG_SEGA315_5124_INT_CB(WRITELINE(smssdisp_state, sms_store_int_callback))

	MCFG_CPU_ADD("control", Z80, XTAL_53_693175MHz/15)
	MCFG_CPU_PROGRAM_MAP(sms_store_mem)
	/* Both CPUs seem to communicate with the VDP etc? */
	MCFG_CPU_IO_MAP(sms_io)

	MCFG_DEVICE_REMOVE("mycard")
	MCFG_DEVICE_REMOVE("exp")

	MCFG_SMS_CARTRIDGE_ADD("slot2", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot3", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot4", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot5", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot6", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot7", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot8", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot9", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot10", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot11", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot12", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot13", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot14", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot15", sms_cart, NULL)
	MCFG_SMS_CARTRIDGE_ADD("slot16", sms_cart, NULL)

	MCFG_SMS_CARD_ADD("slot17", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot18", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot19", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot20", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot21", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot22", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot23", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot24", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot25", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot26", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot27", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot28", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot29", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot30", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot31", sms_cart, NULL)
	MCFG_SMS_CARD_ADD("slot32", sms_cart, NULL)
MACHINE_CONFIG_END

static MACHINE_CONFIG_START( sms_pal_base, sms_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", Z80, MASTER_CLOCK_PAL/15)
	MCFG_CPU_PROGRAM_MAP(sms_mem)
	MCFG_CPU_IO_MAP(sms_io)

	MCFG_QUANTUM_TIME(attotime::from_hz(50))

	MCFG_MACHINE_START_OVERRIDE(sms_state,sms)
	MCFG_MACHINE_RESET_OVERRIDE(sms_state,sms)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_SOUND_ADD("segapsg", SEGAPSG, MASTER_CLOCK_PAL/15)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)

	MCFG_SMS_CARTRIDGE_ADD("slot", sms_cart, NULL)

	MCFG_SOFTWARE_LIST_ADD("cart_list","sms")

	MCFG_SMS_CONTROL_PORT_ADD(CONTROL1_TAG, sms_control_port_devices, "joypad")
	MCFG_SMS_CONTROL_PORT_TH_INPUT_HANDLER(WRITELINE(sms_state, sms_ctrl1_th_input))
	MCFG_SMS_CONTROL_PORT_PIXEL_HANDLER(READ32(sms_state, sms_pixel_color))

	MCFG_SMS_CONTROL_PORT_ADD(CONTROL2_TAG, sms_control_port_devices, "joypad")
	MCFG_SMS_CONTROL_PORT_TH_INPUT_HANDLER(WRITELINE(sms_state, sms_ctrl2_th_input))
	MCFG_SMS_CONTROL_PORT_PIXEL_HANDLER(READ32(sms_state, sms_pixel_color))
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( sms2_pal, sms_pal_base )

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK_PAL/10, \
		SEGA315_5124_WIDTH, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH - 2, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 256 + 10, \
		SEGA315_5124_HEIGHT_PAL, SEGA315_5124_TBORDER_START + SEGA315_5124_PAL_240_TBORDER_HEIGHT, SEGA315_5124_TBORDER_START + SEGA315_5124_PAL_240_TBORDER_HEIGHT + 240)
	MCFG_SCREEN_REFRESH_RATE((double) MASTER_CLOCK_PAL/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_PAL))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_sms)

	MCFG_DEVICE_ADD("sms_vdp", SEGA315_5246, 0)
	MCFG_SEGA315_5246_SET_SCREEN("screen")
	MCFG_SEGA315_5246_IS_PAL(true)
	MCFG_SEGA315_5246_INT_CB(WRITELINE(sms_state, sms_int_callback))
	MCFG_SEGA315_5246_PAUSE_CB(WRITELINE(sms_state, sms_pause_callback))
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( sms1_pal, sms_pal_base )

	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_PROGRAM_MAP(sms1_mem)  // This adds the SegaScope handlers for 3-D glasses
	MCFG_CPU_IO_MAP(sms_io)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK_PAL/10, \
		SEGA315_5124_WIDTH, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH - 2, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 256 + 10, \
		SEGA315_5124_HEIGHT_PAL, SEGA315_5124_TBORDER_START + SEGA315_5124_PAL_240_TBORDER_HEIGHT, SEGA315_5124_TBORDER_START + SEGA315_5124_PAL_240_TBORDER_HEIGHT + 240)
	MCFG_SCREEN_REFRESH_RATE((double) MASTER_CLOCK_PAL/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_PAL))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_sms1)

	MCFG_SCREEN_ADD("left_lcd", LCD)    // This is needed for SegaScope Left LCD
	MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK_PAL/10, \
		SEGA315_5124_WIDTH, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH - 2, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 256 + 10, \
		SEGA315_5124_HEIGHT_PAL, SEGA315_5124_TBORDER_START + SEGA315_5124_PAL_240_TBORDER_HEIGHT, SEGA315_5124_TBORDER_START + SEGA315_5124_PAL_240_TBORDER_HEIGHT + 240)
	MCFG_SCREEN_REFRESH_RATE((double) MASTER_CLOCK_PAL/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_PAL))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_sms1)

	MCFG_SCREEN_ADD("right_lcd", LCD)   // This is needed for SegaScope Right LCD
	MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK_PAL/10, \
		SEGA315_5124_WIDTH, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH - 2, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 256 + 10, \
		SEGA315_5124_HEIGHT_PAL, SEGA315_5124_TBORDER_START + SEGA315_5124_PAL_240_TBORDER_HEIGHT, SEGA315_5124_TBORDER_START + SEGA315_5124_PAL_240_TBORDER_HEIGHT + 240)
	MCFG_SCREEN_REFRESH_RATE((double) MASTER_CLOCK_PAL/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_PAL))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_sms1)

	MCFG_SCREEN_VBLANK_DRIVER(sms_state, screen_vblank_sms1)

	MCFG_DEFAULT_LAYOUT(layout_sms1)

	MCFG_VIDEO_START_OVERRIDE(sms_state,sms1)
	MCFG_VIDEO_RESET_OVERRIDE(sms_state,sms1)

	MCFG_DEVICE_ADD("sms_vdp", SEGA315_5124, 0)
	MCFG_SEGA315_5124_SET_SCREEN("screen")
	MCFG_SEGA315_5124_IS_PAL(true)
	MCFG_SEGA315_5124_INT_CB(WRITELINE(sms_state, sms_int_callback))
	MCFG_SEGA315_5124_PAUSE_CB(WRITELINE(sms_state, sms_pause_callback))

	// card and expansion slots, not present in Master System II
	MCFG_SMS_CARD_ADD("mycard", sms_cart, NULL)
	MCFG_SMS_EXPANSION_ADD("exp", sms_expansion_devices, NULL)
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( sms1_kr, sms1_ntsc )
	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_IO_MAP(sms1kr_io)

	MCFG_DEVICE_REMOVE("slot")
	MCFG_SG1000MK3_CARTRIDGE_ADD("slot", sg1000mk3_cart, NULL)
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( sms1_krfm, sms1_kr )
	MCFG_SOUND_ADD("ym2413", YM2413, XTAL_53_693175MHz/15)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( smsj, sms1_krfm )
	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_IO_MAP(smsj_io)
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( sg1000m3, smsj )
	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_IO_MAP(sg1000m3_io)

	// Mark III does not have TH connected.
	MCFG_SMS_CONTROL_PORT_MODIFY(CONTROL1_TAG)
	MCFG_SMS_CONTROL_PORT_TH_INPUT_HANDLER(NULL)
	MCFG_SMS_CONTROL_PORT_MODIFY(CONTROL2_TAG)
	MCFG_SMS_CONTROL_PORT_TH_INPUT_HANDLER(NULL)
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( sms2_kr, sms2_ntsc )
	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_IO_MAP(smsj_io)

	MCFG_DEVICE_REMOVE("slot")
	MCFG_SG1000MK3_CARTRIDGE_ADD("slot", sg1000mk3_cart, NULL)
MACHINE_CONFIG_END

static MACHINE_CONFIG_START( gamegear, sms_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", Z80, XTAL_53_693175MHz/15)
	MCFG_CPU_PROGRAM_MAP(sms_mem)
	MCFG_CPU_IO_MAP(gg_io)

	MCFG_QUANTUM_TIME(attotime::from_hz(60))

	MCFG_MACHINE_START_OVERRIDE(sms_state,sms)
	MCFG_MACHINE_RESET_OVERRIDE(sms_state,sms)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", LCD)
	MCFG_SCREEN_RAW_PARAMS(XTAL_53_693175MHz/10, \
		SEGA315_5124_WIDTH, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 6*8, SEGA315_5124_LBORDER_START + SEGA315_5124_LBORDER_WIDTH + 26*8, \
		SEGA315_5124_HEIGHT_NTSC, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_192_TBORDER_HEIGHT + 3*8, SEGA315_5124_TBORDER_START + SEGA315_5124_NTSC_192_TBORDER_HEIGHT + 21*8 )
	MCFG_SCREEN_REFRESH_RATE((double) XTAL_53_693175MHz/10 / (SEGA315_5124_WIDTH * SEGA315_5124_HEIGHT_NTSC))
	MCFG_SCREEN_UPDATE_DRIVER(sms_state, screen_update_gamegear)

	MCFG_VIDEO_START_OVERRIDE(sms_state,gamegear)
	MCFG_VIDEO_RESET_OVERRIDE(sms_state,gamegear)

	MCFG_DEVICE_ADD("sms_vdp", SEGA315_5378, 0)
	MCFG_SEGA315_5378_SET_SCREEN("screen")
	MCFG_SEGA315_5378_IS_PAL(false)
	MCFG_SEGA315_5378_INT_CB(WRITELINE(sms_state, sms_int_callback))
	MCFG_SEGA315_5378_PAUSE_CB(WRITELINE(sms_state, sms_pause_callback))

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_STEREO("lspeaker","rspeaker")

	MCFG_SOUND_ADD("gamegear", GAMEGEAR, XTAL_53_693175MHz/15)
	MCFG_SOUND_ROUTE(0, "lspeaker", 1.00)
	MCFG_SOUND_ROUTE(1, "rspeaker", 1.00)

	/* cartridge */
	MCFG_GG_CARTRIDGE_ADD("slot", gg_cart, NULL)

	MCFG_SOFTWARE_LIST_ADD("cart_list", "gamegear")

	MCFG_GG_EXT_PORT_ADD("ext", gg_ext_port_devices, NULL)
	MCFG_GG_EXT_PORT_TH_INPUT_HANDLER(WRITELINE(sms_state, gg_ext_th_input))
	//MCFG_GG_EXT_PORT_PIXEL_HANDLER(READ32(sms_state, sms_pixel_color)) // only for GG-TV mod
MACHINE_CONFIG_END


ROM_START(sms1)
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0xff)

	ROM_REGION(0x20000, "user1", 0)
	ROM_SYSTEM_BIOS( 0, "bios13", "US/European BIOS v1.3 (1986)" )
	ROMX_LOAD("mpr-10052.rom", 0x0000, 0x2000, CRC(0072ed54) SHA1(c315672807d8ddb8d91443729405c766dd95cae7), ROM_BIOS(1))
	ROM_SYSTEM_BIOS( 1, "hangonsh", "US/European BIOS v2.4 with Hang On and Safari Hunt (1988)" )
	ROMX_LOAD("mpr-11459a.rom", 0x0000, 0x20000, CRC(91e93385) SHA1(9e179392cd416af14024d8f31c981d9ee9a64517), ROM_BIOS(2))
	ROM_SYSTEM_BIOS( 2, "hangon", "US/European BIOS v3.4 with Hang On (1988)" )
	ROMX_LOAD("mpr-11458.rom", 0x0000, 0x20000, CRC(8edf7ac6) SHA1(51fd6d7990f62cd9d18c9ecfc62ed7936169107e), ROM_BIOS(3))
	ROM_SYSTEM_BIOS( 3, "missiled", "US/European BIOS v4.4 with Missile Defense 3D (1988)" )
	ROMX_LOAD("missiled.rom", 0x0000, 0x20000, CRC(e79bb689) SHA1(aa92ae576ca670b00855e278378d89e9f85e0351), ROM_BIOS(4))
	ROM_SYSTEM_BIOS( 4, "v10", "US Master System BIOS v1.0 (prototype)" )
	ROMX_LOAD("v1.0.bin", 0x0000, 0x2000, CRC(72bec693) SHA1(29091ff60ef4c22b1ee17aa21e0e75bac6b36474), ROM_BIOS(5))
	ROM_SYSTEM_BIOS( 5, "proto", "US Master System Prototype BIOS" )
	ROMX_LOAD("m404prot.rom", 0x0000, 0x2000, CRC(1a15dfcc) SHA1(4a06c8e66261611dce0305217c42138b71331701), ROM_BIOS(6))
ROM_END

ROM_START(sms)
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0xff)

	ROM_REGION(0x20000, "user1", 0)
	ROM_SYSTEM_BIOS( 0, "alexkidd", "US/European BIOS with Alex Kidd in Miracle World (1990)" )
	ROMX_LOAD("mpr-12808.ic2", 0x0000, 0x20000, CRC(cf4a09ea) SHA1(3af7b66248d34eb26da40c92bf2fa4c73a46a051), ROM_BIOS(1)) /* "SEGA // MPR-12808 W63 // 9114E9004" @ IC2 */
ROM_END

ROM_START(smssdisp)
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0x00)

	ROM_REGION(0x4000, "user1", 0)
	ROM_FILL(0x0000, 0x4000, 0xff)

	ROM_REGION(0x4000, "control", 0)
	ROM_LOAD("smssdisp.rom", 0x0000, 0x4000, CRC(ee2c29ba) SHA1(fc465122134d95363112eb51b9ab71db3576cefd))
ROM_END

ROM_START(sms1pal)
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0xff)

	ROM_REGION(0x20000, "user1", 0)
	ROM_SYSTEM_BIOS( 0, "bios13", "US/European BIOS v1.3 (1986)" )
	ROMX_LOAD("mpr-10052.rom", 0x0000, 0x2000, CRC(0072ed54) SHA1(c315672807d8ddb8d91443729405c766dd95cae7), ROM_BIOS(1))
	ROM_SYSTEM_BIOS( 1, "bios20", "European BIOS v2.0 (198?)" )
	ROMX_LOAD("mpr-10883.rom", 0x0000, 0x2000, CRC(b3d854f8) SHA1(fc7eb9141f38c92bf98d9134816f64b45e811112), ROM_BIOS(2))
	ROM_SYSTEM_BIOS( 2, "hangonsh", "US/European BIOS v2.4 with Hang On and Safari Hunt (1988)" )
	ROMX_LOAD("mpr-11459a.rom", 0x0000, 0x20000, CRC(91e93385) SHA1(9e179392cd416af14024d8f31c981d9ee9a64517), ROM_BIOS(3))
	ROM_SYSTEM_BIOS( 3, "hangon", "Sega Master System - US/European BIOS v3.4 with Hang On (1988)" )
	ROMX_LOAD("mpr-11458.rom", 0x0000, 0x20000, CRC(8edf7ac6) SHA1(51fd6d7990f62cd9d18c9ecfc62ed7936169107e), ROM_BIOS(4))
	ROM_SYSTEM_BIOS( 4, "missiled", "US/European BIOS v4.4 with Missile Defense 3D (1988)" )
	ROMX_LOAD("missiled.rom", 0x0000, 0x20000, CRC(e79bb689) SHA1(aa92ae576ca670b00855e278378d89e9f85e0351), ROM_BIOS(5))
ROM_END

ROM_START(smspal)
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0xff)

	ROM_REGION(0x40000, "user1", 0)
	ROM_SYSTEM_BIOS( 0, "alexkidd", "US/European BIOS with Alex Kidd in Miracle World (1990)" ) /* PCB Label: SEGA // IC BD M4Jr. PAL" Master System II with 314-5246 (ZIP) VDP and 314-5237 (DIP48) IO */
	ROMX_LOAD("mpr-12808.ic2", 0x0000, 0x20000, CRC(cf4a09ea) SHA1(3af7b66248d34eb26da40c92bf2fa4c73a46a051), ROM_BIOS(1)) /* "SEGA // MPR-12808 W63 // 9114E9004" @ IC2 */
	ROM_SYSTEM_BIOS( 1, "sonic", "European/Brazilian BIOS with Sonic the Hedgehog (1991)" )
	ROMX_LOAD("sonbios.rom", 0x0000, 0x40000, CRC(81c3476b) SHA1(6aca0e3dffe461ba1cb11a86cd4caf5b97e1b8df), ROM_BIOS(2))
ROM_END

ROM_START(sg1000m3)
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0x00)
ROM_END

ROM_START(smsj) /* PCB Label: "SEGA(R) IC BOARD M4J MAIN // 837-6418"; has "YM2413 // 78 04 71 G" at IC10; Back of pcb has traces marked "171-5541 (C)SEGA 1987 MADE IN JAPAN"
    see http://www.smspower.org/Development/JapaneseSMS837-6418 */
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0xff)

	ROM_REGION(0x4000, "user1", 0)
	ROM_SYSTEM_BIOS( 0, "jbios21", "Japanese BIOS v2.1 (1987)" )
	ROMX_LOAD("mpr-11124.ic2", 0x0000, 0x2000, CRC(48d44a13) SHA1(a8c1b39a2e41137835eda6a5de6d46dd9fadbaf2), ROM_BIOS(1)) /* "SONY 7J06 // MPR-11124 // JAPAN 021" @ IC2 */
ROM_END

ROM_START(smskr)
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0xff)

	ROM_REGION(0x20000, "user1", 0)
	ROM_SYSTEM_BIOS( 0, "akbioskr", "Samsung Gam*Boy II with Alex Kidd in Miracle World (1990)" )
	ROMX_LOAD("akbioskr.rom", 0x000, 0x20000, CRC(9c5bad91) SHA1(2feafd8f1c40fdf1bd5668f8c5c02e5560945b17), ROM_BIOS(1))
ROM_END

ROM_START(gamegear)
	ROM_REGION(0x4000, "maincpu", 0)
	ROM_FILL(0x0000, 0x4000, 0x00)

	ROM_REGION(0x0400, "user1", 0)
	ROM_SYSTEM_BIOS( 0, "none", "No BIOS" ) /* gamegear */
	ROM_SYSTEM_BIOS( 1, "majesco", "Majesco BIOS" ) /* gamg */
	ROMX_LOAD("majbios.rom", 0x0000, 0x0400, CRC(0ebea9d4) SHA1(914aa165e3d879f060be77870d345b60cfeb4ede), ROM_BIOS(2))
ROM_END

#define rom_gamegeaj rom_gamegear
#define rom_sms1krfm rom_smsj
#define rom_sms1kr rom_smsj

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

  Game driver(s)

  US
   - Sega Master System (I) (sms1)
     - prototype (M404) bios - 1986
     - without built-in game v1.3 - 1986
     - built-in Hang On/Safari Hunt v2.4 - 1988
     - built-in Hang On v3.4 - 1988
     - built-in Missile Defense 3-D v4.4 - 1988
     - built-in Hang On/Astro Warrior - 19??
   - Sega Master System II (sms)
     - built-in Alex Kidd in Miracle World - 1990

  JP
   - Sega SG-1000 Mark III (sg1000m3)
     - no bios - 1985
   - Sega Master System (I) (smsj)
     - without built-in game v2.1 - 1987

  KR
   - Samsung Gam*Boy (I) - with FM Chip (sms1krfm)
     - without built-in game v2.1 - 1989
   - Samsung Gam*Boy (I) (sms1kr)
     - without built-in game v2.1 - 19??
   - Samsung Gam*Boy II / Aladdin Boy (smskr)
     - built-in Alex Kidd in Miracle World (Korean) - 1991 (GB II) / 1992 (AB)
  Note about KR:
     - units of Gam*Boy (I) with plug-in AC adaptor have FM and the ones with
       built-in AC adaptor do not.

  EU
   - Sega Master System (I) (sms1pal)
     - without built-in game v1.3 - 1986
     - built-in Hang On/Safari Hunt v2.4 - 1988
     - built-in Hang On v3.4 - 1988
     - built-in Missile Defense 3-D v4.4 - 1988
     - built-in Hang On/Astro Warrior - 19??
   - Sega Master System II (smspal)
     - built-in Alex Kidd in Miracle World - 1990
     - built-in Sonic the Hedgehog - 1991

  BR
   - Tec Toy Master System (I) (same as sms1)
     - built-in Hang On/Safari Hunt v2.4 - 1989
   - Tec Toy Master System II (same as sms1)
     - built-in Alex Kidd in Miracle World - 1991
   - Tec Toy Master System III Compact (same as sms)
     - built-in Alex Kidd in Miracle World - 1992
     - built-in Sonic the Hedgehog - 1993
     - built-in World Cup Italia '90 (Super Futebol II) - 1994
     - built-in Hang On/Safari Hunt v2.4 (blue L.Phaser pack) - 1995
   - Tec Toy Master System Super Compact (no driver)
     - built-in Alex Kidd in Miracle World - 1993
     - built-in Sonic the Hedgehog - 1993
     - built-in World Cup Italia '90 (Super Futebol II) - 1994
   - Tec Toy Master System Girl (no driver)
     - built-in Monica no Castelo do Dragao - 1994
     - built-in Sonic the Hedgehog (T. Monica em O Resgate pack) - 199?
  Notes about BR:
   - PAL-M has same frequency and line count of NTSC
   - Tec Toy later changed its logo twice and its name to Tectoy
   - 20XX models (Handy, Collection, Evolution...) likely have SoC hardware

  These are coin-operated machines (stuff for MAME):

   - Sega Game Box 9
   - Sega Mark III Soft Desk 5
   - Sega Mark III Soft Desk 10
   - Sega Shooting Zone

   The SMS Store Display Unit is labeled PD-W UNIT. Pictures found on Internet
   show cartridges with a label where a not-for-sale message is written along
   the information that it is for use on the Product Display-Working Unit.

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

/*    YEAR  NAME        PARENT      COMPAT  MACHINE      INPUT     CLASS           INIT      COMPANY     FULLNAME                            FLAGS */
CONS( 1985, sg1000m3,   sms,        0,      sg1000m3,    sg1000m3, sms_state,      sg1000m3, "Sega",     "SG-1000 Mark III",                 MACHINE_SUPPORTS_SAVE )
CONS( 1986, sms1,       sms,        0,      sms1_ntsc,   sms1,     sms_state,      sms1,     "Sega",     "Master System I",                  MACHINE_SUPPORTS_SAVE )
CONS( 1986, sms1pal,    sms,        0,      sms1_pal,    sms1,     sms_state,      sms1,     "Sega",     "Master System I (PAL)" ,           MACHINE_SUPPORTS_SAVE )
CONS( 1986, smssdisp,   sms,        0,      sms_sdisp,   smssdisp, smssdisp_state, smssdisp, "Sega",     "Master System Store Display Unit", MACHINE_SUPPORTS_SAVE )
CONS( 1987, smsj,       sms,        0,      smsj,        smsj,     sms_state,      smsj,     "Sega",     "Master System (Japan)",            MACHINE_SUPPORTS_SAVE )
CONS( 1990, sms,        0,          0,      sms2_ntsc,   sms,      sms_state,      sms1,     "Sega",     "Master System II",                 MACHINE_SUPPORTS_SAVE )
CONS( 1990, smspal,     sms,        0,      sms2_pal,    sms,      sms_state,      sms1,     "Sega",     "Master System II (PAL)",           MACHINE_SUPPORTS_SAVE )
CONS( 1989, sms1krfm,   sms,        0,      sms1_krfm,   smsj,     sms_state,      sms1krfm, "Samsung",  "Gam*Boy I - FM (Korea)",           MACHINE_SUPPORTS_SAVE )
CONS( 19??, sms1kr,     sms,        0,      sms1_kr,     smsj,     sms_state,      sms1kr,   "Samsung",  "Gam*Boy I (Korea)",                MACHINE_SUPPORTS_SAVE )
CONS( 1991, smskr,      sms,        0,      sms2_kr,     sms,      sms_state,      smskr,    "Samsung",  "Gam*Boy II (Korea)",               MACHINE_SUPPORTS_SAVE )

CONS( 1991, gamegear,   0,          sms,    gamegear,    gg,       sms_state,      gamegear, "Sega",     "Game Gear (Europe/America)",       MACHINE_SUPPORTS_SAVE )
CONS( 1990, gamegeaj,   gamegear,   0,      gamegear,    gg,       sms_state,      gamegeaj, "Sega",     "Game Gear (Japan)",                MACHINE_SUPPORTS_SAVE )