summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/jantotsu.cpp
blob: 95ab9ddb4f90ffff806f382a7b1e039e4053556b (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
// license:BSD-3-Clause
// copyright-holders:David Haywood, Angelo Salese
/*******************************************************************************************

4nin-uchi Mahjong Jantotsu (c) 1983 Sanritsu

driver by David Haywood and Angelo Salese

Notes:
-The 1st/2nd Player tiles on hand are actually shown on different screen sides.The Service
 Mode is for adjusting these screens (to not let the human opponent to read your tiles).

TODO:
-According to the flyer, color bitplanes might be wrong on the A-N mahjong charset, might be
 a BTANB however...
-I need schematics / pcb photos (component + solder sides) to understand if the background
 color is hard-wired to the DIP-Switches or there's something else wrong.

============================================================================================
Debug cheats:

c01b-c028 player-1 tiles
c02b-c038 "right" computer tiles
c03b-c048 "up" computer tiles / player-2 tiles
c04b-c058 "left" computer tiles

============================================================================================
MSM samples table (I'm assuming that F is left-right players, M2 is up / player 2 and M1 is player 1):
start |end   |sample    |possible data triggers
------------------------|----------------------
jat-43 (0x0000-0x1fff)
0x0000|0x06ff|rii'chi M1| 0x00
0x0700|0x0bff|rii'chi M2| 0x07
0x0c00|0x0fff|nagare?   |
0x1000|0x13ff|ron M     |
0x1400|0x17ff|kore?     | 0x14
0x1800|0x1bff|kan M1    | 0x18
0x1c00|0x1fff|kan M2    |
jat-42 (0x4000-0x5fff)
0x4000|0x42ff|koi?      |
0x4300|0x4ef0|ippatsu M |
0x5000|0x52ff|pon M     |
0x5300|0x57ff|tsumo M2  | 0x53
0x5800|0x5dff|rii'chi F | 0x58
jat-41 (0x8000-0x9fff)
0x8000|0x87ff|ippatsu F |
0x8800|0x8fff|ryutoku?  | 0x88
0x9000|0x95ff|otoyo?    | 0x90
0x9600|0x9eff|yatta     | 0x96
jat-40 (0xc000-0xdfff)
0xc000|0xc8ff|odaii?    | 0xc0
0xc900|0xccff|tsumo F   | 0xc9
0xcd00|0xcfff|tsumo M1  |
0xd000|0xd3ff|ron F     | 0xd0
0xd400|0xd7ff|pon F     | 0xd4
0xd800|0xdbff|kan F     |
0xdc00|0xdfff|chi       |
------------------------------------------------


============================================================================================

4nin-uchi mahjong Jantotsu
(c)1983 Sanritsu

C2-00159_A

CPU: Z80
Sound: SN76489ANx2 MSM5205
OSC: 18.432MHz

ROMs:
JAT-00.2B (2764)
JAT-01.3B
JAT-02.4B
JAT-03.2E
JAT-04.3E
JAT-05.4E

JAT-40.6B
JAT-41.7B
JAT-42.8B
JAT-43.9B

JAT-60.10P (7051) - color PROM

This game requires special control panel.
Standard mahjong control panel + these 3 buttons.
- 9syu nagare
- Continue Yes
- Continue No

dumped by sayu

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

#include "emu.h"
#include "cpu/z80/z80.h"
#include "sound/sn76496.h"
#include "sound/msm5205.h"
#include "emupal.h"
#include "screen.h"
#include "speaker.h"


#define MAIN_CLOCK XTAL(18'432'000)

class jantotsu_state : public driver_device
{
public:
	jantotsu_state(const machine_config &mconfig, device_type type, const char *tag) :
		driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_adpcm(*this, "adpcm") ,
		m_palette(*this, "palette")
	{ }

	void jantotsu(machine_config &config);

private:
	/* sound-related */
	uint32_t   m_adpcm_pos;
	uint8_t    m_adpcm_idle;
	int      m_adpcm_data;
	uint8_t    m_adpcm_trigger;

	/* misc */
	uint8_t    m_mux_data;

	/* video-related */
	uint8_t    m_vram_bank;
	uint8_t    m_col_bank;
	uint8_t    m_display_on;
	uint8_t    m_bitmap[0x8000];
	DECLARE_READ8_MEMBER(jantotsu_bitmap_r);
	DECLARE_WRITE8_MEMBER(jantotsu_bitmap_w);
	DECLARE_WRITE8_MEMBER(bankaddr_w);
	DECLARE_READ8_MEMBER(jantotsu_mux_r);
	DECLARE_WRITE8_MEMBER(jantotsu_mux_w);
	DECLARE_READ8_MEMBER(jantotsu_dsw2_r);
	DECLARE_WRITE8_MEMBER(jan_adpcm_w);
	virtual void machine_start() override;
	virtual void machine_reset() override;
	virtual void video_start() override;
	void jantotsu_palette(palette_device &palette) const;
	uint32_t screen_update_jantotsu(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
	DECLARE_WRITE_LINE_MEMBER(jan_adpcm_int);
	required_device<cpu_device> m_maincpu;
	required_device<msm5205_device> m_adpcm;
	required_device<palette_device> m_palette;
	void jantotsu_io(address_map &map);
	void jantotsu_map(address_map &map);
};


/*************************************
 *
 *  Video emulation
 *
 *************************************/

void jantotsu_state::video_start()
{
	save_item(NAME(m_bitmap));
}

uint32_t jantotsu_state::screen_update_jantotsu(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
	int x, y, i;
	int count = 0;
	uint8_t pen_i;

	if(!m_display_on)
		return 0;

	for (y = 0; y < 256; y++)
	{
		for (x = 0; x < 256; x += 8)
		{
			uint8_t color;

			for (i = 0; i < 8; i++)
			{
				color = m_col_bank;

				for(pen_i = 0;pen_i<4;pen_i++)
					color |= (((m_bitmap[count + pen_i*0x2000]) >> (7 - i)) & 1) << pen_i;

				if (cliprect.contains(x + i, y))
					bitmap.pix32(y, x + i) = m_palette->pen(color);
			}

			count++;
		}
	}

	return 0;
}

/* banked vram */
READ8_MEMBER(jantotsu_state::jantotsu_bitmap_r)
{
	return m_bitmap[offset + ((m_vram_bank & 3) * 0x2000)];
}

WRITE8_MEMBER(jantotsu_state::jantotsu_bitmap_w)
{
	m_bitmap[offset + ((m_vram_bank & 3) * 0x2000)] = data;
}

WRITE8_MEMBER(jantotsu_state::bankaddr_w)
{
	m_vram_bank = ((data & 0xc0) >> 6);

	m_display_on = (data & 2);

	/* bit 0 is unknown */
	if(data & 0x3c)
		logerror("I/O port $07 write trips %02x\n",data);
}

void jantotsu_state::jantotsu_palette(palette_device &palette) const
{
	const uint8_t *color_prom = memregion("proms")->base();

	for (int i = 0; i < 0x20; ++i)
	{
		int bit0, bit1, bit2;

		bit0 = BIT(color_prom[0], 0);
		bit1 = BIT(color_prom[0], 1);
		bit2 = BIT(color_prom[0], 2);
		int const r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
		bit0 = BIT(color_prom[0], 3);
		bit1 = BIT(color_prom[0], 4);
		bit2 = BIT(color_prom[0], 5);
		int const g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
		bit0 = 0;
		bit1 = BIT(color_prom[0], 6);
		bit2 = BIT(color_prom[0], 7);
		int const b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;

		palette.set_pen_color(i, rgb_t(r, g, b));
		color_prom++;
	}
}

/*************************************
 *
 *  Memory handlers
 *
 *************************************/

/*Multiplexer is mapped as 6-bits reads,bits 6 & 7 are always connected to the coin mechs.*/
READ8_MEMBER(jantotsu_state::jantotsu_mux_r)
{
	const char *const portnames[] = { "PL1_1", "PL1_2", "PL1_3", "PL1_4",
										"PL2_1", "PL2_2", "PL2_3", "PL2_4" };
	uint8_t i,res;

	//  printf("%02x\n", m_mux_data);
	res = ioport("COINS")->read();

	for(i=0;i<8;i++)
	{
		if((~m_mux_data) & (1 << i))
			res |= ioport(portnames[i])->read();
	}

	return res;
}

WRITE8_MEMBER(jantotsu_state::jantotsu_mux_w)
{
	m_mux_data = data;
}

/*If bits 6 & 7 doesn't return 0x80,the game hangs until this bit is set,
  so I'm guessing that these bits can't be read by the z80 at all but directly
  hard-wired to the video chip. However I need the schematics / pcb snaps and/or
  a side-by-side test (to know if the background colors really works) to be sure. */
READ8_MEMBER(jantotsu_state::jantotsu_dsw2_r)
{
	return (ioport("DSW2")->read() & 0x3f) | 0x80;
}

WRITE8_MEMBER(jantotsu_state::jan_adpcm_w)
{
	switch (offset)
	{
		case 0:
			m_adpcm_pos = (data & 0xff) * 0x100;
			m_adpcm_idle = 0;
			m_adpcm->reset_w(0);
			/* I don't think that this will ever happen, it's there just to be sure
			   (i.e. I'll probably never do a "nagare" in my entire life ;-) ) */
			if(data & 0x20)
				popmessage("ADPCM called with data = %02x, contact MAMEdev", data);
//          printf("%02x 0\n", data);
			break;
		/*same write as port 2? MSM sample ack? */
		case 1:
//          m_adpcm_idle = 1;
//          m_adpcm->reset_w(1);
//          printf("%02x 1\n", data);
			break;
	}
}

WRITE_LINE_MEMBER(jantotsu_state::jan_adpcm_int)
{
	if (m_adpcm_pos >= 0x10000 || m_adpcm_idle)
	{
		//m_adpcm_idle = 1;
		m_adpcm->reset_w(1);
		m_adpcm_trigger = 0;
	}
	else
	{
		uint8_t *ROM = memregion("adpcm")->base();

		m_adpcm_data = ((m_adpcm_trigger ? (ROM[m_adpcm_pos] & 0x0f) : (ROM[m_adpcm_pos] & 0xf0) >> 4));
		m_adpcm->write_data(m_adpcm_data & 0xf);
		m_adpcm_trigger ^= 1;
		if (m_adpcm_trigger == 0)
		{
			m_adpcm_pos++;
			if ((ROM[m_adpcm_pos] & 0xff) == 0x70)
				m_adpcm_idle = 1;
		}
	}
}


/*************************************
 *
 *  Address maps
 *
 *************************************/

void jantotsu_state::jantotsu_map(address_map &map)
{
	map(0x0000, 0xbfff).rom();
	map(0xc000, 0xc7ff).ram();
	map(0xe000, 0xffff).rw(FUNC(jantotsu_state::jantotsu_bitmap_r), FUNC(jantotsu_state::jantotsu_bitmap_w));
}

void jantotsu_state::jantotsu_io(address_map &map)
{
	map.global_mask(0xff);
	map(0x00, 0x00).portr("DSW1").w("sn1", FUNC(sn76489a_device::command_w));
	map(0x01, 0x01).r(FUNC(jantotsu_state::jantotsu_dsw2_r)).w("sn2", FUNC(sn76489a_device::command_w));
	map(0x02, 0x03).w(FUNC(jantotsu_state::jan_adpcm_w));
	map(0x04, 0x04).rw(FUNC(jantotsu_state::jantotsu_mux_r), FUNC(jantotsu_state::jantotsu_mux_w));
	map(0x07, 0x07).w(FUNC(jantotsu_state::bankaddr_w));
}


/*************************************
 *
 *  Input ports
 *
 *************************************/

static INPUT_PORTS_START( jantotsu )
	PORT_START("COINS")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START("DSW1")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:1")
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPUNUSED_DIPLOC( 0x02, 0x00, "SW1:2" )
	PORT_DIPNAME( 0x1c, 0x10, "Player vs. CPU timer decrement speed") PORT_DIPLOCATION("SW1:3,4,5") //in msecs I suppose
	PORT_DIPSETTING(    0x00, "30")
	PORT_DIPSETTING(    0x08, "50" )
	PORT_DIPSETTING(    0x04, "70")
	PORT_DIPSETTING(    0x0c, "90" )
	PORT_DIPSETTING(    0x10, "110" )
	PORT_DIPSETTING(    0x18, "130" )
	PORT_DIPSETTING(    0x14, "150" )
	PORT_DIPSETTING(    0x1c, "170" )
	PORT_DIPNAME( 0xe0, 0x80, "Player vs. Player timer decrement speed" ) PORT_DIPLOCATION("SW1:6,7,8") //in msecs I suppose
	PORT_DIPSETTING(    0x00, "100" )
	PORT_DIPSETTING(    0x40, "120" )
	PORT_DIPSETTING(    0x20, "140" )
	PORT_DIPSETTING(    0x60, "160" )
	PORT_DIPSETTING(    0x80, "180" )
	PORT_DIPSETTING(    0xc0, "200" )
	PORT_DIPSETTING(    0xa0, "220" )
	PORT_DIPSETTING(    0xe0, "240" )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x07, 0x07, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW2:1,2,3")
	PORT_DIPSETTING(    0x07, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x03, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Hard ) )
	PORT_DIPUNUSED_DIPLOC( 0x08, 0x00, "SW2:4" )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Service_Mode ) ) PORT_DIPLOCATION("SW2:5")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, "Play BGM") PORT_DIPLOCATION("SW2:6")
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0xc0, 0x40, "Background Color" ) PORT_DIPLOCATION("SW2:7,8")
	PORT_DIPSETTING(    0xc0, "Purple" )
	PORT_DIPSETTING(    0x80, "Green" )
	PORT_DIPSETTING(    0x40, "Blue" )
	PORT_DIPSETTING(    0x00, "Black" )

	PORT_START("PL1_1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_RON )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("P1 Mahjong Nagare") PORT_CODE(KEYCODE_S)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("P1 Continue Button Yes") PORT_CODE(KEYCODE_Y)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("P1 Continue Button No") PORT_CODE(KEYCODE_O)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START("PL1_2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_M )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_N )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_PON )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_KAN )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_MAHJONG_CHI )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_MAHJONG_REACH )

	PORT_START("PL1_3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_G )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_H )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_I )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_J )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_MAHJONG_K )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_MAHJONG_L )

	PORT_START("PL1_4")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_A )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_B )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_C )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_D )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_MAHJONG_E )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_MAHJONG_F )

	PORT_START("PL2_1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_RON ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("P2 Mahjong Nagare") PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("P2 Continue Button Yes") PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("P2 Continue Button No") PORT_PLAYER(2)
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("PL2_2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_M ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_N ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_PON ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_KAN ) PORT_PLAYER(2)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_MAHJONG_CHI ) PORT_PLAYER(2)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_MAHJONG_REACH ) PORT_PLAYER(2)

	PORT_START("PL2_3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_G ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_H ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_I ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_J ) PORT_PLAYER(2)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_MAHJONG_K ) PORT_PLAYER(2)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_MAHJONG_L ) PORT_PLAYER(2)

	PORT_START("PL2_4")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_A ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_B ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_C ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_D ) PORT_PLAYER(2)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_MAHJONG_E ) PORT_PLAYER(2)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_MAHJONG_F ) PORT_PLAYER(2)
INPUT_PORTS_END


/*************************************
 *
 *  Machine driver
 *
 *************************************/

void jantotsu_state::machine_start()
{
	save_item(NAME(m_vram_bank));
	save_item(NAME(m_mux_data));
	save_item(NAME(m_adpcm_pos));
	save_item(NAME(m_adpcm_idle));
	save_item(NAME(m_adpcm_data));
	save_item(NAME(m_adpcm_trigger));
}

void jantotsu_state::machine_reset()
{
	/*Load hard-wired background color.*/
	m_col_bank = (ioport("DSW2")->read() & 0xc0) >> 3;

	m_vram_bank = 0;
	m_mux_data = 0;
	m_adpcm_pos = 0;
	m_adpcm_idle = 1;
	m_adpcm_data = 0;
	m_adpcm_trigger = 0;
}

MACHINE_CONFIG_START(jantotsu_state::jantotsu)

	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu", Z80,MAIN_CLOCK/4)
	MCFG_DEVICE_PROGRAM_MAP(jantotsu_map)
	MCFG_DEVICE_IO_MAP(jantotsu_io)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) //not accurate
	MCFG_SCREEN_SIZE(256, 256)
	MCFG_SCREEN_VISIBLE_AREA(0, 256-1, 16, 240-1)
	MCFG_SCREEN_UPDATE_DRIVER(jantotsu_state, screen_update_jantotsu)
	MCFG_SCREEN_VBLANK_CALLBACK(INPUTLINE("maincpu", INPUT_LINE_NMI))

	PALETTE(config, m_palette, FUNC(jantotsu_state::jantotsu_palette), 0x20);

	/* sound hardware */
	SPEAKER(config, "mono").front_center();

	MCFG_DEVICE_ADD("sn1", SN76489A, MAIN_CLOCK/4)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)

	MCFG_DEVICE_ADD("sn2", SN76489A, MAIN_CLOCK/4)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)

	MCFG_DEVICE_ADD("adpcm", MSM5205, XTAL(384'000))
	MCFG_MSM5205_VCLK_CB(WRITELINE(*this, jantotsu_state, jan_adpcm_int))  /* interrupt function */
	MCFG_MSM5205_PRESCALER_SELECTOR(S64_4B)  /* 6 KHz */
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
MACHINE_CONFIG_END


/*************************************
 *
 *  ROM definition(s)
 *
 *************************************/

ROM_START( jantotsu )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "jat-00.2b", 0x00000, 0x02000, CRC(bed10f86) SHA1(c5ac845b32fa295b0ff205b1401bcc071d604d6e) )
	ROM_LOAD( "jat-01.3b", 0x02000, 0x02000, CRC(cc9312e9) SHA1(b08d38cc58d92378305c015c5a001b4da072188b) )
	ROM_LOAD( "jat-02.4b", 0x04000, 0x02000, CRC(292969f1) SHA1(e7cb93b67296e84ea012fcceb72df712c7e0f135) )
	ROM_LOAD( "jat-03.2e", 0x06000, 0x02000, CRC(7452ff63) SHA1(b258674e77eee5548a065419a3092877957dec66) )
	ROM_LOAD( "jat-04.3e", 0x08000, 0x02000, CRC(734e029f) SHA1(75aa13397847b4db32c41aaa6ff2ac82f16bd7a2) )
	ROM_LOAD( "jat-05.4e", 0x0a000, 0x02000, CRC(1a725e1a) SHA1(1d39d607850f47b9389f41147d4570da8814f639) )

	ROM_REGION( 0x10000, "adpcm", ROMREGION_ERASE00 )
	ROM_LOAD( "jat-43.9b", 0x00000, 0x02000, CRC(3c1d843c) SHA1(7a836e66cad4e94916f0d80a439efde49306a0e1) )
	ROM_LOAD( "jat-42.8b", 0x04000, 0x02000, CRC(3ac3efbf) SHA1(846faea7c7c01fb7500aa33a70d4b54e878c0e41) )
	ROM_LOAD( "jat-41.7b", 0x08000, 0x02000, CRC(ce08ed71) SHA1(8554e5e7ec178f57bed5fbdd5937e3a35f72c454) )
	ROM_LOAD( "jat-40.6b", 0x0c000, 0x02000, CRC(2275253e) SHA1(64e9415faf2775c6b9ab497dce7fda8c4775192e) )

	ROM_REGION( 0x20, "proms", 0 )
	ROM_LOAD( "jat-60.10p", 0x00, 0x20,  CRC(65528ae0) SHA1(6e3bf27d10ec14e3c6a494667b03b68726fcff14) )
ROM_END


/*************************************
 *
 *  Game driver(s)
 *
 *************************************/

GAME( 1983, jantotsu, 0, jantotsu, jantotsu, jantotsu_state, empty_init, ROT270, "Sanritsu", "4nin-uchi Mahjong Jantotsu", MACHINE_SUPPORTS_SAVE )