/
vlc.cpp
683 lines (552 loc) · 26.5 KB
/
vlc.cpp
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
// license:BSD-3-Clause
// copyright-holders:Yves
/* vlc.cpp
Multi-games from VLC Nevada 1995
CGA monitor 15Khz 60hz
// CPU CLOCK use Crystal 16.000MHZ
// VIDEO CLOCK use Crystal 33.000MHZ
- 1x MC68000 (CPU) 8mhz
- 1x MC68B45P (CRTC)
- 1x AY3-8912 (sound)
- 1x M4262B oki (RTC CLOCK)
- 3x MC68681 (2 x UART)
- 4x 27C512
- 2x 62256 NVRAM + batt (connect in 16bits)
- 2x 6264 BACKUP + batt (connect in 8bits)
- 1x MODEM XE1214 from XECOM (300/1200 Baud)
on MAME 0.145u4
Yves
Todo :
Video Section
Security PAL U35 decoding
In/Out interface Board communication (included mechanical METER + some switch Door open ,etc..)
JCM Bill acceptor communication (probably ID-003 protocol)
PRINTER communication (Star Printer )
******************************************************
******************************************************
SECURITY SYSTEM
ADDRESS A40000..A40001
U35 PAL16R8 SECURITY
PAL is connect on the BUS D15..D8
Write Clock 8 bits in D15..D8
Read OE 8 bit on D15..D8
U50 4Bit D Flop Register is connect on D3..D0
this one seem to have 2 use.
1. keep track of the PAL16R8 state
2. DOOR SWITCH is connect on U50 Clear pin (D3..D0 LOW = Door Open)
Write Clock 4 bits in D-Flop Register
Read OE 4 bits on D3..D0
Boot Section is locate in NVRAM. Interrupts Pointers are changed on the fly.
seem to check hardware WDT ,Power Failure , interrupt system,etc.. before game start.
INT7 seem to control POWER FAILURE ,WDT.
INT7 initialization is needed to boot the game.
******************************************************
******************************************************
VIDEO REGISTER of 6845
BOOT:FE1A82 00A5 0000 CRTC_TYPE1: dc.l unk_A50000
BOOT:FE1A86 0000 dc.b 0
BOOT:FE1A87 0000 dc.b 0
BOOT:FE1A88 0000 dc.b 0
BOOT:FE1A89 0000 dc.b 0
BOOT:FE1A8A 0000 dc.b 0
BOOT:FE1A8B 0007 dc.b 7
BOOT:FE1A8C 0000 dc.b 0
BOOT:FE1A8D 001F dc.b $1F
BOOT:FE1A8E 001F dc.b $1F
BOOT:FE1A8F 0002 dc.b 2
BOOT:FE1A90 0020 dc.b $20
BOOT:FE1A91 0003 dc.b 3
BOOT:FE1A92 0023 dc.b $23 * #
BOOT:FE1A93 001F dc.b $1F
BOOT:FE1A94 002A dc.b $2A * *
BOOT:FE1A95 0000 dc.b 0
BOOT:FE1A96 00A5 8000 CRTC_TYPE2: dc.l unk_A58000
BOOT:FE1A9A 00FF dc.b $FF
BOOT:FE1A9B 0000 dc.b 0
BOOT:FE1A9C 0000 dc.b 0
BOOT:FE1A9D 0000 dc.b 0
BOOT:FE1A9E 0000 dc.b 0
BOOT:FE1A9F 0007 dc.b 7
BOOT:FE1AA0 0000 dc.b 0
BOOT:FE1AA1 001F dc.b $1F
BOOT:FE1AA2 001F dc.b $1F
BOOT:FE1AA3 0002 dc.b 2
BOOT:FE1AA4 0020 dc.b $20
BOOT:FE1AA5 0006 dc.b 6
BOOT:FE1AA6 0033 dc.b $33 * 3
BOOT:FE1AA7 002D dc.b $2D * -
BOOT:FE1AA8 0040 dc.b $40 * @
BOOT:FE1AA9 0000 dc.b 0
BOOT:FE19F0 INI_CRTC6845:
BOOT:FE19F0 48E7 8140 movem.l d0/d7/a1,-(sp)
BOOT:FE19F4 2258 movea.l (a0)+,a1 * type1 = 0xA50000, type2 = 0xA80000
BOOT:FE19F6 50D1 st (a1)
BOOT:FE19F8 11D8 0435 move.b (a0)+,(ScreenMode)
BOOT:FE19FC 4278 0412 clr.w (word_412)
BOOT:FE1A00 2248 movea.l a0,a1
BOOT:FE1A02 3E3C 0FFF move.w #$FFF,d7
BOOT:FE1A06 307C 0000 movea.w #0,a0
BOOT:FE1A0A 6100 0108 bsr set_vid_D0_A0 * D0 = 0x800020
BOOT:FE1A0A * A0 = 0xB00000
BOOT:FE1A0E 7E0D moveq #$D,d7
BOOT:FE1A10
BOOT:FE1A10 LOOP:
BOOT:FE1A10 13C7 0090 0001 move.b d7,(CRTC_ADR)
BOOT:FE1A16 13D9 0090 8001 move.b (a1)+,(CRTC_DAT)
BOOT:FE1A1C 51CF FFF2 dbf d7,LOOP
BOOT:FE1A20 4CDF 0281 movem.l (sp)+,d0/d7/a1
BOOT:FE1A24 4E75 rts
*** MC6845 Initialization ***
Htotal Hdisp HsyncPos HsyncW Vtotal VtotalAdj Vdisp VsyncPos InterMode MaxScanAdr CurStart CurEnd StartAdrH StartAdrL CurH CurL LightPenH LightPenL
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
register: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
nevada TYPE1 : 42 31 35 03 32 02 31 31 00 07 00 00 00 00 00 00 00 00
nevada TYPE2 : 64 45 51 06 32 02 31 31 00 07 00 00 00 00 00 00 00 00
*/
#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "machine/mc68681.h"
#include "machine/microtch.h"
#include "machine/msm6242.h"
#include "machine/nvram.h"
#include "machine/watchdog.h"
#include "sound/ay8910.h"
#include "video/mc6845.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"
#include "tilemap.h"
namespace {
#define MASTER_CLOCK XTAL(16'000'000)
#define MASTER_CPU ((MASTER_CLOCK)/2) // 8mhz
#define SOUND_CLOCK ((MASTER_CLOCK) /8) // 2mhz
#define VIDEO_CLOCK XTAL(33'000'000)
#define MC6845_CLOCK ((VIDEO_CLOCK)/4/16) // 0.515625 MHZ
/***************************************************************************
General
***************************************************************************/
class nevada_state : public driver_device
{
public:
nevada_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_duart(*this, {"duart18", "duart40", "duart39"}),
m_rtc(*this, "rtc"),
m_maincpu(*this, "maincpu"),
m_microtouch(*this, "microtouch"),
m_nvram(*this, "nvram"),
m_ram62256(*this, "ram62256"),
m_backup(*this, "backup"),
m_vram(*this, "vram"),
m_gfxdecode(*this, "gfxdecode")
{ }
void nevada(machine_config &config);
void init_nevada();
protected:
virtual void machine_start() override;
virtual void video_start() override;
private:
required_device_array<mc68681_device, 3> m_duart;
required_device<msm6242_device> m_rtc;
required_device<cpu_device> m_maincpu;
optional_device<microtouch_device> m_microtouch;
required_device<nvram_device> m_nvram;
required_shared_ptr<uint16_t> m_ram62256;
required_shared_ptr<uint16_t> m_backup;
required_shared_ptr<uint16_t> m_vram;
required_device<gfxdecode_device> m_gfxdecode;
//uint8_t* m_videoram = nullptr;
//uint8_t* m_colorram = nullptr;
tilemap_t *m_tilemap = nullptr;
uint16_t m_datA40000 = 0U;
void nvram_init(nvram_device &nvram, void *data, size_t size);
uint32_t screen_update_nevada(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
void nevada_palette(palette_device &palette) const;
template<int N> uint8_t duart_r(offs_t offset);
template<int N> void duart_w(offs_t offset, uint8_t data);
uint8_t rtc_r(offs_t offset);
void rtc_w(offs_t offset, uint8_t data);
uint16_t io_board_r();
void io_board_w(uint16_t data);
void io_board_x(uint16_t data);
uint16_t nevada_sec_r();
void nevada_sec_w(uint16_t data);
void vram_w(offs_t offset, uint16_t data);
TILE_GET_INFO_MEMBER(get_bg_tile_info);
void nevada_map(address_map &map);
};
/*
need further test on PAL16R8 (FlipFlop Trick with other bits ?)
this DUMP is done writing 0 to 255 and reading output (probably not the good way.)
PAL is connected on the UPPER byte D15..D8
Address A40000..A40001
2 Type of PAL (one for game, the other is to set game to fabric default)
there is a 74LS173 on the LOWER byte that used bit D3..D0
funny thing , the DOOR ACCESS Switch is connected on the CLEAR PIN of this 4bits register
so when D3..D0 are LOW , DOOR is OPEN
*/
static const uint8_t pal35[256] = {
0x11, 0x42, 0x5b, 0xca, 0x19, 0x42, 0x5b, 0xca, 0x38, 0x63, 0x3a, 0x63, 0x3a, 0x63, 0x3a, 0x63,
0xd3, 0x08, 0x5b, 0xca, 0x19, 0xca, 0x19, 0xca, 0x18, 0xeb, 0x18, 0xeb, 0x18, 0xeb, 0x18, 0xeb,
0xd3, 0xca, 0x5b, 0xcc, 0x5b, 0xcc, 0x5b, 0xcc, 0xba, 0x63, 0x38, 0x65, 0x38, 0x65, 0x38, 0x65,
0xd1, 0xca, 0x5b, 0xc8, 0x5b, 0xc8, 0x5b, 0xc8, 0x9a, 0xeb, 0x1a, 0xed, 0x1a, 0xed, 0x1a, 0xed,
0x0c, 0x65, 0xf0, 0x00, 0x64, 0xf5, 0x04, 0x65, 0xb8, 0x25, 0x20, 0x20, 0x24, 0x24, 0x24, 0x24,
0xf0, 0x00, 0xf8, 0x00, 0xfc, 0x00, 0xfc, 0x00, 0xb8, 0x3d, 0xfc, 0x19, 0xfc, 0x19, 0xfc, 0x19,
0x44, 0xf9, 0xc4, 0xf9, 0xc4, 0xfd, 0xc4, 0xfd, 0xfc, 0xfd, 0xfc, 0xfd, 0xfc, 0xfd, 0xfc, 0xfd,
0xc0, 0xd9, 0xc8, 0xd9, 0xc8, 0xd9, 0xc8, 0xd9, 0xd8, 0xd9, 0xd8, 0xd9, 0xd8, 0xd9, 0xd8, 0xd9,
0x0c, 0x44, 0xfb, 0x04, 0x67, 0xd4, 0x0c, 0x44, 0xba, 0x24, 0x22, 0x02, 0x26, 0x06, 0x26, 0x06,
0xfb, 0x00, 0xfb, 0x00, 0xef, 0x10, 0xce, 0x18, 0xef, 0x18, 0xef, 0x18, 0xff, 0x18, 0xff, 0x18,
0x44, 0xf8, 0xc6, 0xd8, 0xce, 0xdc, 0xce, 0xdc, 0xef, 0x9e, 0x67, 0xb8, 0x67, 0xbc, 0x67, 0xbc,
0xc6, 0xd8, 0xca, 0xd8, 0xca, 0xd8, 0xca, 0xd8, 0xcb, 0x9a, 0xef, 0x9a, 0xff, 0xd8, 0xdb, 0xd8,
0x66, 0xf4, 0x00, 0x64, 0xba, 0x25, 0x22, 0x22, 0x26, 0x26, 0x26, 0x26, 0xf2, 0x00, 0xfa, 0x00,
0xfa, 0x00, 0xfa, 0x00, 0xba, 0x3d, 0xfa, 0x19, 0xfa, 0x19, 0xfa, 0x19, 0x44, 0xf9, 0xc2, 0xf0,
0xc2, 0xf4, 0xc2, 0xf4, 0xfa, 0xf4, 0xfa, 0xf4, 0xfa, 0xf4, 0xfa, 0xf4, 0xc2, 0xd0, 0xca, 0xd0,
0xca, 0xd0, 0xca, 0xd0, 0xda, 0xd0, 0xda, 0xd0, 0xda, 0xd0, 0xda, 0xd0, 0x08, 0x63, 0xd3, 0x08 };
/***************************************************************************/
/******************** VIDEO SECTION ************************************/
/***************************************************************************/
static const gfx_layout charlayout =
{
/* Todo , just for sample */
8,8,
RGN_FRAC(1,1),
4,
{ 0, 1, 2, 3 },
{ 5*4, 4*4, 7*4, 6*4, 1*4, 0*4, 3*4, 2*4 },
{ 0*8*4, 1*8*4, 2*8*4, 3*8*4, 4*8*4, 5*8*4, 6*8*4, 7*8*4 },
8*8*4
};
/***************************************************************************/
void nevada_state::vram_w(offs_t offset, uint16_t data)
{
// Todo, Just for sample
m_vram[offset] = data;
m_tilemap->mark_tile_dirty(offset / 2);
}
/***************************************************************************/
static GFXDECODE_START( gfx_nevada )
/* Todo , just for sample */
GFXDECODE_ENTRY( "gfx1", 0x0000, charlayout, 0, 8 )
GFXDECODE_END
/***************************************************************************/
TILE_GET_INFO_MEMBER( nevada_state::get_bg_tile_info )
{
//int attr = m_colorram[tile_index];
int code = m_vram[tile_index*2+1];
//int bank = (attr & 0x02) >> 1;
//int color = (attr & 0x3c) >> 2;
tileinfo.set(0, code, 0, 0);
}
/***************************************************************************/
void nevada_state::video_start()
{
m_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(nevada_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8,8, 31,31);
}
/***************************************************************************/
uint32_t nevada_state::screen_update_nevada(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
m_tilemap->draw(screen, bitmap, cliprect, 0, 0);
return 0;
}
/***************************************************************************/
void nevada_state::nevada_palette(palette_device &palette) const
{
// Palette init
}
/***************************************************************************/
/******************** NVRAM SECTION ************************************/
/***************************************************************************/
void nevada_state::nvram_init(nvram_device &nvram, void *data, size_t size)
{
memset(data, 0x00, size);
if (memregion("defaults")->base())
memcpy(data, memregion("defaults")->base(), memregion("defaults")->bytes());
}
/***************************************************************************
U18 MC68681 RS232 UART SIDEA = MODEM 1200 Baud
U18 MC68681 RS232 UART SIDEB = not used
Interrupt 4 (autovectored)
U39 MC68681 RS232 UART SIDEA = Printer J3 (rs232)
U39 MC68681 RS232 UART SIDEB = Player Tracking Interface J2 (not used)
Interrupt 3 (autovectored)
68681 DUART <-> Microtouch touch screen controller communication
U40 MC68681 RS232 UART SIDEA = TouchScreen J1 (RS232)
U40 MC68681 RS232 UART SIDEB = JCM Bill Acceptor (RS422)
Interrupt 5 (autovectored)
***************************************************************************/
template<int N>
uint8_t nevada_state::duart_r(offs_t offset)
{
return m_duart[N]->read(offset >> 3);
}
template<int N>
void nevada_state::duart_w(offs_t offset, uint8_t data)
{
m_duart[N]->write(offset >> 3, data);
}
/***************************************************************************/
/********************* RTC SECTION ********************************/
/***************************************************************************/
uint8_t nevada_state::rtc_r(offs_t offset)
{
return m_rtc->read(offset >> 3);
}
void nevada_state::rtc_w(offs_t offset, uint8_t data)
{
m_rtc->write(offset >> 3, data);
}
/***************************************************************************/
uint16_t nevada_state::io_board_r()
{
// IO board Serial communication 0xA00000
return 1;
}
/***************************************************************************/
void nevada_state::io_board_w(uint16_t data)
{
// IO board Serial communication 0xA00000 on bit0
}
/***************************************************************************/
void nevada_state::io_board_x(uint16_t data)
{
// IO board Serial communication 0xA80000 on bit15
}
/***************************************************************************/
uint16_t nevada_state::nevada_sec_r()
{
// D3..D0 = DOOR OPEN or Track STATE of PAL35
uint16_t res;
/* UPPER byte is use for input in PAL35 */
// 74LS173 $bits Register used LOWER bits D3..D0 for PAL35 state and DOOR LOGIC SWITCH
res = pal35[m_datA40000 >> 8];
res = res << 8;
res = res | (m_datA40000 & 0x00FF);
return res;
}
/***************************************************************************/
void nevada_state::nevada_sec_w(uint16_t data)
{
// 74LS173 $bits Register used LOWER bits D3..D0 for DOOR LOGIC SWITCH
m_datA40000 = data | 0x00f0; // since D7..D4 are not used and are connected to PULLUP
// popmessage("WRITE %04x %04x ",datA40000,data);
}
/***************************************************************************/
/*
DOOR Switch desc
1 x FRONT DOOR SW
1 x REAR DOOR SW
1 x COIN DOOR SW
1 x TOP DOOR SW
1 x COMPUTER DOOR SW
Interrupt Vector
INT1 RTC MSM6242
INT2 nc
INT3 UART U39
INT4 UART U18
INT5 UART U40
INT6 nc
INT7 Seem to be used for confirmation of Ds1232 WDT work (need futher check)
U40 MC68681 RS232 UART SIDEA = TouchScreen J1 (RS232)
U40 MC68681 RS232 UART SIDEB = JCM Bill Acceptor (RS422)
U39 MC68681 RS232 UART SIDEA = Printer J3 (rs232)
U39 MC68681 RS232 UART SIDEB = Player Tracking Interface J2 (not used)
U18 MC68681 RS232 UART SIDEA = MODEM LOW SPEED 1200 BAUD from XECOM
U18 MC68681 PIN4 IP1 from U16 (75HC189 pin6) from PIN2 J90 UNKNOWN !
U18 MC68681 PIN36 IP2 ACCESS DOOR SWITCH
U18 MC68681 PIN2 IP3 LOW Battery Detector for ACCESS DOOR SWITCH
U18 MC68681 PIN39 IP4 from U12 75174 UNKNOWN !
U18 MC68681 PIN38 IP5 from U8 smart Battery (not used)
U39 MC68681 PIN7 IP0 Printer Data Terminal Ready
U39 MC68681 PIN4 IP1 COIN INPUT
U39 MC68681 PIN2 IP3 COIN INPUT
U39 MC68681 Pin38 IP5 JCM Bill Acceptor (J4-1,J4-2)
U39 MC68681 PIN29 OP0 Printer Clear To Send
U40 MC68681 PIN4 IP1 COIN INPUT
U40 MC68681 PIN2 IP3 COIN INPUT
U40 MC68681 PIN38 IP5 from U51 DS1260 smart Battery POWER FAIL FLAG
U40 MC68681 Pin12 OP1 JCM Bill Acceptor (Enable Comm. U34)
U40 MC68681 Pin27 OP4 JCM Bill Acceptor (J4-6, J4-7 Control)
// missing address for :
// external I/O board communication via PAL23
A23 A22 A21 A20 | A19 A18 A17 A16 | A15 A14 A13 A12 | A11 A10 A9 A8 | A7 A6 A5 A4 | A3 A2 A1 xx
Memory Map (generic)
--------------------
00000000 0000FFFF NVRAM (only 0..FFFF vector and jump) 16bits
00010000 00011FFF BACKUP1 8bits
00020000 00021FFF BACKUP2 8bits
00B00000 00B01FFF VIDEO RAM 8bits
00FA0000 00FBFFFF Not used (Expension board SRAM)
00FC0000 00FDFFFF PROGRAM 16bits
00FE0000 00FFFFFF BOOTLOADER 16bits
00010001
00014001
00020001
00024001
00900001 6845 CS CRTC U8 RS=LOW ADDRESS REGISTER (A15 ON RS) Data bus on D7..D0
00980001 6845 CS CRTC U8 RS=HIGH DATA REGISTER (A15 ON RS)
00A00001 I/O Board Communication
00A08001 I/O Board Communication
00A10000 WDT STROBE DS1232 WatchDog Controller (this address reset Strobe of Ds1232)
00A20001 AY8912 BDIR AUDIO Data bus on D7..D0
00A28001 AY8912 BC1 AUDIO
00A300x1 6242 CS RTC U41 A0..A3 (A4..A7 ON A0..A3) Data bus on D3..D0
00A4000x PAL CS READ U35 SECURITY PAL16R8 Data bus on D15..D8
00A4000x PAL CLK WRITE U35 SECURITY PAL16R8
00A4000x CLK WRITE U50 74LS173 for DOOR LOGIC SW on D3..D0
00A70000 ???
00B100x0 68681 CS UART U40 RS1..RS4 REGISTER (A4..A7 ON RS1..RS4) Data bus on D7..D0
00B200x0 68681 CS UART U39 RS1..RS4 REGISTER (A4..A7 ON RS1..RS4) Data bus on D7..D0
00E000x0 68681 CS UART U18 RS1..RS4 REGISTER (A4..A7 ON RS1..RS4) Data bus on D15..D8
*/
/***************************************************************************/
void nevada_state::nevada_map(address_map &map)
{
map(0x00000000, 0x0000ffff).ram().share("ram62256");
map(0x00010000, 0x00021fff).ram().share("backup");
map(0x00900001, 0x00900001).w("crtc", FUNC(mc6845_device::address_w));
map(0x00908001, 0x00908001).w("crtc", FUNC(mc6845_device::register_w));
map(0x00a00000, 0x00a00001).rw(FUNC(nevada_state::io_board_r), FUNC(nevada_state::io_board_w));
map(0x00a08000, 0x00a08001).w(FUNC(nevada_state::io_board_x));
map(0x00a10000, 0x00a10001).w("watchdog", FUNC(watchdog_timer_device::reset16_w));
map(0x00a20001, 0x00a20001).w("aysnd", FUNC(ay8910_device::address_w));
map(0x00a28001, 0x00a28001).w("aysnd", FUNC(ay8910_device::data_w));
map(0x00a30000, 0x00a30001).select(0xf0).rw(FUNC(nevada_state::rtc_r), FUNC(nevada_state::rtc_w)).umask16(0x00ff);
map(0x00a40000, 0x00a40001).rw(FUNC(nevada_state::nevada_sec_r), FUNC(nevada_state::nevada_sec_w));
map(0x00b00000, 0x00b03fff).ram().w(FUNC(nevada_state::vram_w)).share("vram");
map(0x00b10000, 0x00b10001).select(0xf0).rw(FUNC(nevada_state::duart_r<1>), FUNC(nevada_state::duart_w<1>)).umask16(0x00ff); // Lower byte
map(0x00b20000, 0x00b20001).select(0xf0).rw(FUNC(nevada_state::duart_r<2>), FUNC(nevada_state::duart_w<2>)).umask16(0x00ff); // Lower byte
map(0x00e00000, 0x00e00001).select(0xf0).rw(FUNC(nevada_state::duart_r<0>), FUNC(nevada_state::duart_w<0>)).umask16(0xff00); // Upper byte
map(0x00fa0000, 0x00fbffff).ram(); // not used
map(0x00fc0000, 0x00ffffff).rom(); // ROM ext + ROM boot
}
/***************************************************************************/
/*
U18 MC68681 PIN4 IP1 from U16 (75HC189 pin6) from PIN2 J90 UNKNOWN !
U18 MC68681 PIN36 IP2 ACCESS DOOR SWITCH
U18 MC68681 PIN2 IP3 LOW Battery Detector for ACCESS DOOR SWITCH
U18 MC68681 PIN39 IP4 from U12 75174 UNKNOWN !
U18 MC68681 PIN38 IP5 from U8 smart Battery (not used)
U39 MC68681 PIN7 IP0 Printer Data Terminal Ready
U39 MC68681 PIN4 IP1 COIN INPUT
U39 MC68681 PIN2 IP3 COIN INPUT
U39 MC68681 Pin38 IP5 JCM Bill Acceptor (J4-1,J4-2)
U39 MC68681 PIN29 OP0 Printer Clear To Send
U39 MC68681 PIN27 OP4 ROM CHAR A14
U40 MC68681 PIN4 IP1 COIN INPUT
U40 MC68681 PIN2 IP3 COIN INPUT
U40 MC68681 PIN38 IP5 from U51 DS1260 smart Battery POWER FAIL FLAG
U40 MC68681 Pin12 OP1 JCM Bill Acceptor (Enable Comm. U34)
U40 MC68681 Pin27 OP4 JCM Bill Acceptor (J4-6, J4-7 Control)
*/
/***************************************************************************/
static INPUT_PORTS_START( nevada )
PORT_START("DSW1")
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("U16 pin6")
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("DOOR SW1")
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME("LOW BATT on DOOR ACCESS")
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME("U12 ??")
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_NAME("LOW BATT U8")
PORT_START("DSW2")
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_NAME("PRINTER READY")
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_START("DSW3")
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN3 )
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_COIN4 )
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_BUTTON7 ) PORT_NAME("LOW BATT U51")
INPUT_PORTS_END
/***************************************************************************/
/*************************
* Machine start *
*************************/
void nevada_state::machine_start()
{
m_nvram->set_base(m_ram62256, 0x1000);
}
/***************************************************************************/
/*************************
* Machine Driver *
*************************/
void nevada_state::nevada(machine_config &config)
{
// basic machine hardware
M68000(config, m_maincpu, MASTER_CPU);
m_maincpu->set_addrmap(AS_PROGRAM, &nevada_state::nevada_map);
WATCHDOG_TIMER(config, "watchdog").set_time(attotime::from_msec(150)); /* 150ms Ds1232 TD to Ground */
NVRAM(config, "nvram").set_custom_handler(FUNC(nevada_state::nvram_init));
// video hardware
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
screen.set_size((42+1)*8, (32+1)*8); /* From MC6845 init, registers 00 & 04 (programmed with value-1). */
screen.set_visarea(0*8, 31*8-1, 0*8, 31*8-1); /* From MC6845 init, registers 01 & 06. */
screen.set_screen_update(FUNC(nevada_state::screen_update_nevada));
GFXDECODE(config, m_gfxdecode, "palette", gfx_nevada);
PALETTE(config, "palette", FUNC(nevada_state::nevada_palette), 256);
mc6845_device &crtc(MC6845(config, "crtc", MC6845_CLOCK));
crtc.set_screen("screen");
crtc.set_show_border_area(false);
crtc.set_char_width(8);
// sound hardware
SPEAKER(config, "mono").front_center();
AY8912(config, "aysnd", SOUND_CLOCK).add_route(ALL_OUTPUTS, "mono", 0.75);
MC68681(config, m_duart[0], XTAL(3'686'400)); // UARTA = Modem 1200Baud
m_duart[0]->irq_cb().set_inputline(m_maincpu, M68K_IRQ_4);
m_duart[0]->inport_cb().set_ioport("DSW1");
MC68681(config, m_duart[1], XTAL(3'686'400)); // UARTA = Printer
m_duart[1]->irq_cb().set_inputline(m_maincpu, M68K_IRQ_3);
m_duart[1]->inport_cb().set_ioport("DSW2");
MC68681(config, m_duart[2], XTAL(3'686'400)); // UARTA = Touch , UARTB = Bill Acceptor
m_duart[2]->irq_cb().set_inputline(m_maincpu, M68K_IRQ_5);
m_duart[2]->a_tx_cb().set(m_microtouch, FUNC(microtouch_device::rx));
m_duart[2]->inport_cb().set_ioport("DSW3");
MICROTOUCH(config, m_microtouch, 9600).stx().set(m_duart[1], FUNC(mc68681_device::rx_a_w));
/* devices */
MSM6242(config, m_rtc, XTAL(32'768));
m_rtc->out_int_handler().set_inputline(m_maincpu, M68K_IRQ_1); // rtc interrupt on INT1
}
/***************************************************************************/
ROM_START( nevada )
ROM_REGION( 0x1000000, "maincpu", 0 ) /* 2 x 27C512 */
ROM_LOAD16_BYTE( "u9even.bin" , 0xfc0000, 0x010000, CRC(adb207bd) SHA1(3e3509b78fdf32785f92cb21272694673d25c563) ) // program fc0000..fdffff
ROM_LOAD16_BYTE( "u10odd.bin" , 0xfc0001, 0x010000, CRC(a79778d7) SHA1(6ff969f09d9781479360bca3403b927099ad6481) )
ROM_LOAD16_BYTE( "u31even.bin", 0xfe0000, 0x010000, CRC(c9779f30) SHA1(5310b3d8b5e887313ce8059bd72d0730a295074f) ) // Boot fe0000..ffffff
ROM_LOAD16_BYTE( "u32odd.bin" , 0xfe0001, 0x010000, CRC(51035ed1) SHA1(66cbf582cdf34cf3dde30cf8a99bbced4af1ce6f) )
ROM_REGION16_BE( 0x0010000, "defaults", 0 ) /* 2 x 62256 NVRAM */
ROM_LOAD16_BYTE( "u30nv_even.bin", 0x000000, 0x008000, CRC(11f5c663) SHA1(f447fd59010bc7fbbda321c5aaf13e23c2aebd40) ) // NVRAM even (RESET + Vector table in NVRAM)
ROM_LOAD16_BYTE( "u33nv_odd.bin" , 0x000001, 0x008000, CRC(20623da2) SHA1(2dd31a96f0a3454855cd975e8ee95e43316344e0) ) // NVRAM odd
ROM_REGION( 0x08000, "gfx1", 0 )
ROM_LOAD( "u34char.bin", 0x00000 , 0x08000, CRC(6f1c6953) SHA1(e8db3b1d3fc3ec1c3dca155517553bd0000a2249) ) /* Characters */
/*
BACKUP RAM
PAL DUMP
*/
ROM_END
/***************************************************************************/
/*************************
* Driver Init *
*************************/
void nevada_state::init_nevada()
{
uint16_t *ROM = (uint16_t *)memregion("maincpu")->base();
memset(m_backup,0x00,m_backup.bytes()); // temp
/* Patch for WDT test with int Level7 */
/* PATCH FE0086 4278 0414 Clrf $0414 */
/* this skip the test for the WDT */
// ROM[0xFE0086/2] = 0x4278;
// ROM[0xFE0088/2] = 0x0414;
// Skip PAL SECURITY
ROM[0xFE0248/2] = 0x4E71; // nop
ROM[0xFE05D0/2] = 0x4E71; // nop
ROM[0xFE05D8/2] = 0x6014; // bra
ROM[0xFE0606/2] = 0x600A; // bra
// ROM[0xFE18B4/2] = 0x4E71; // nop
}
/***************************************************************************/
} // Anonymous namespace
/*************************
* Game Drivers *
*************************/
// YEAR NAME PARENT MACHINE INPUT STATE INIT ROT COMPANY FULLNAME FLAGS
GAME( 1995, nevada, 0, nevada, nevada, nevada_state, init_nevada, ROT0, "VLC Inc.", "VLC Nevada", MACHINE_NO_SOUND | MACHINE_NOT_WORKING )