summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/silvmil.c
blob: ff2c0c577960728de16b32991d4d355092030cae (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
/*
  Silver Millennium

  yet another Data East / Tumble Pop derived hardware
  this one seems similar to (but not identical to)
  the crospang.c hardware from F2 system
  also very close to gotcha.c, which was also a Para
  board.

  todo: refresh rate & audio balance
        verify dipswitches - difficulty & unknown dips
        verify clocks for Z80 & OKI6295

OSC on the PCB are 12MHz, 14.31818MHz & 4.096MHz

*/

#include "emu.h"
#include "cpu/z80/z80.h"
#include "cpu/m68000/m68000.h"
#include "sound/okim6295.h"
#include "video/decospr.h"
#include "sound/2151intf.h"


class silvmil_state : public driver_device
{
public:
	silvmil_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
			m_bg_videoram(*this, "bg_videoram"),
			m_fg_videoram(*this, "fg_videoram"),
			m_spriteram(*this, "spriteram"),
			m_sprgen(*this, "spritegen"),
			m_maincpu(*this, "maincpu"),
			m_gfxdecode(*this, "gfxdecode") { }

	/* memory pointers */
	required_shared_ptr<UINT16> m_bg_videoram;
	required_shared_ptr<UINT16> m_fg_videoram;
	required_shared_ptr<UINT16> m_spriteram;
	optional_device<decospr_device> m_sprgen;

	/* video-related */
	tilemap_t   *m_bg_layer;
	tilemap_t   *m_fg_layer;
	int       m_silvmil_tilebank[4];
	int     m_whichbank;

	DECLARE_WRITE16_MEMBER(silvmil_tilebank_w)
	{
		m_silvmil_tilebank[m_whichbank] = (data>>8) & 0x1f;

	//  printf("%08x tilebank_w %04x (which = %04x)\n",pc, data, m_whichbank);
		m_fg_layer->mark_all_dirty();
		m_bg_layer->mark_all_dirty();
	}

	DECLARE_WRITE16_MEMBER(silvmil_tilebank1_w)
	{
		m_whichbank = (data>>8)&0x3;
	}

	DECLARE_WRITE16_MEMBER(silvmil_fg_scrolly_w)
	{
		m_fg_layer->set_scrolly(0, data + 8);
	}

	DECLARE_WRITE16_MEMBER(silvmil_bg_scrolly_w)
	{
		m_bg_layer->set_scrolly(0, data + 8);
	}

	DECLARE_WRITE16_MEMBER(silvmil_fg_scrollx_w)
	{
		m_fg_layer->set_scrollx(0, data);
	}

	DECLARE_WRITE16_MEMBER(silvmil_bg_scrollx_w)
	{
		m_bg_layer->set_scrollx(0, data + 4);
	}


	DECLARE_WRITE16_MEMBER(silvmil_fg_videoram_w)
	{
		COMBINE_DATA(&m_fg_videoram[offset]);
		m_fg_layer->mark_tile_dirty(offset);
	}

	DECLARE_WRITE16_MEMBER(silvmil_bg_videoram_w)
	{
		COMBINE_DATA(&m_bg_videoram[offset]);
		m_bg_layer->mark_tile_dirty(offset);
	}

	DECLARE_WRITE16_MEMBER(silvmil_soundcmd_w)
	{
		if (ACCESSING_BITS_0_7)
		{
			soundlatch_byte_w(space, 0, data & 0xff);
			machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(20));

		}
	}


	DECLARE_DRIVER_INIT(silvmil);
	TILE_GET_INFO_MEMBER(get_bg_tile_info);
	TILE_GET_INFO_MEMBER(get_fg_tile_info);
	TILEMAP_MAPPER_MEMBER(deco16_scan_rows);
	virtual void machine_start();
	virtual void machine_reset();
	virtual void video_start();
	UINT32 screen_update_silvmil(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	void tumblepb_gfx1_rearrange();
	required_device<cpu_device> m_maincpu;
	required_device<gfxdecode_device> m_gfxdecode;
};


TILE_GET_INFO_MEMBER(silvmil_state::get_bg_tile_info)
{
	int data  = m_bg_videoram[tile_index];
	int tile  = data & 0x3ff;
	int color = (data >> 12) & 0x0f;
	int bank = m_silvmil_tilebank[(data&0xc00)>>10]*0x400;

	SET_TILE_INFO_MEMBER(1, tile + bank, color + 0x20, 0);
}

TILE_GET_INFO_MEMBER(silvmil_state::get_fg_tile_info)
{
	int data  = m_fg_videoram[tile_index];
	int tile  = data & 0x3ff;
	int color = (data >> 12) & 0x0f;
	int bank = m_silvmil_tilebank[(data&0xc00)>>10]*0x400;

	SET_TILE_INFO_MEMBER(1, tile + bank, color + 0x10, 0);
}

TILEMAP_MAPPER_MEMBER(silvmil_state::deco16_scan_rows)
{
	/* logical (col,row) -> memory offset */
	return (col & 0x1f) + ((row & 0x1f) << 5) + ((col & 0x20) << 5) + ((row & 0x20) << 6);
}

void silvmil_state::video_start()
{
	m_bg_layer = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(silvmil_state::get_bg_tile_info),this), tilemap_mapper_delegate(FUNC(silvmil_state::deco16_scan_rows),this), 16, 16, 64, 32);
	m_fg_layer = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(silvmil_state::get_fg_tile_info),this), tilemap_mapper_delegate(FUNC(silvmil_state::deco16_scan_rows),this), 16, 16, 64, 32);

	m_fg_layer->set_transparent_pen(0);
}

UINT32 silvmil_state::screen_update_silvmil(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
	m_bg_layer->draw(screen, bitmap, cliprect, 0, 0);
	m_fg_layer->draw(screen, bitmap, cliprect, 0, 0);
	m_sprgen->draw_sprites(bitmap, cliprect, m_spriteram, 0x400);
	return 0;
}




static ADDRESS_MAP_START( silvmil_map, AS_PROGRAM, 16, silvmil_state )
	AM_RANGE(0x000000, 0x0fffff) AM_ROM

	AM_RANGE(0x100000, 0x100001) AM_WRITE(silvmil_tilebank1_w)
	AM_RANGE(0x100002, 0x100003) AM_WRITE(silvmil_fg_scrollx_w)
	AM_RANGE(0x100004, 0x100005) AM_WRITE(silvmil_fg_scrolly_w)
	AM_RANGE(0x100006, 0x100007) AM_WRITE(silvmil_bg_scrollx_w)
	AM_RANGE(0x100008, 0x100009) AM_WRITE(silvmil_bg_scrolly_w)
	AM_RANGE(0x10000e, 0x10000f) AM_WRITE(silvmil_tilebank_w)

	AM_RANGE(0x120000, 0x120fff) AM_RAM_WRITE(silvmil_fg_videoram_w) AM_SHARE("fg_videoram")
	AM_RANGE(0x122000, 0x122fff) AM_RAM_WRITE(silvmil_bg_videoram_w) AM_SHARE("bg_videoram")
	AM_RANGE(0x200000, 0x2005ff) AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
	AM_RANGE(0x210000, 0x2107ff) AM_RAM AM_SHARE("spriteram")
	AM_RANGE(0x270000, 0x270001) AM_WRITE(silvmil_soundcmd_w)
	AM_RANGE(0x280000, 0x280001) AM_READ_PORT("P1_P2")
	AM_RANGE(0x280002, 0x280003) AM_READ_PORT("COIN")
	AM_RANGE(0x280004, 0x280005) AM_READ_PORT("DSW")
	AM_RANGE(0x300000, 0x30ffff) AM_RAM
ADDRESS_MAP_END


static INPUT_PORTS_START( silvmil )
	PORT_START("P1_P2")
	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )    PORT_PLAYER(1)
	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )  PORT_PLAYER(1)
	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_PLAYER(1)
	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )    PORT_PLAYER(2)
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )  PORT_PLAYER(2)
	PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_PLAYER(2)
	PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
	PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START("COIN")
	PORT_BIT( 0x00ff, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0xfc00, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START("DSW") /* According to Service Mode - Need verification!! */
	PORT_DIPNAME( 0x0003, 0x0003, DEF_STR( Difficulty ) )       PORT_DIPLOCATION("SW1:1,2")
	PORT_DIPSETTING(      0x0002, DEF_STR( Easy ) )
	PORT_DIPSETTING(      0x0003, DEF_STR( Normal ) )
	PORT_DIPSETTING(      0x0001, DEF_STR( Hard ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( Very_Hard ) )
	PORT_DIPNAME( 0x0004, 0x0004, "DSW1:3 - Unknown" )      PORT_DIPLOCATION("SW1:3")
	PORT_DIPSETTING(      0x0004, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0008, 0x0008, "DSW1:4 - Unknown" )      PORT_DIPLOCATION("SW1:4")
	PORT_DIPSETTING(      0x0008, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0010, 0x0010, "DSW1:5 - Unknown" )      PORT_DIPLOCATION("SW1:5")
	PORT_DIPSETTING(      0x0010, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0020, 0x0020, "DSW1:6 - Unknown" )      PORT_DIPLOCATION("SW1:6")
	PORT_DIPSETTING(      0x0020, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0040, 0x0040, "DSW1:7 - Unknown" )      PORT_DIPLOCATION("SW1:7")
	PORT_DIPSETTING(      0x0040, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0080, 0x0080, "DSW1:8 - Unknown" )      PORT_DIPLOCATION("SW1:8")
	PORT_DIPSETTING(      0x0080, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0100, 0x0100, "DSW2:1 - Unknown" )      PORT_DIPLOCATION("SW2:1")
	PORT_DIPSETTING(      0x0100, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0200, 0x0200, "DSW2:2 - Unknown" )      PORT_DIPLOCATION("SW2:2")
	PORT_DIPSETTING(      0x0200, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0400, 0x0000, DEF_STR( Language ) )     PORT_DIPLOCATION("SW2:3") /* Verified */
	PORT_DIPSETTING(      0x0400, DEF_STR( Korean ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( English ) )
	PORT_DIPNAME( 0x3800, 0x3800, DEF_STR( Coinage ) )      PORT_DIPLOCATION("SW2:4,5,6") /* Verified */
	PORT_DIPSETTING(      0x0800, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(      0x1800, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( 4C_2C ) ) /* Works the same as 2C/1C */
	PORT_DIPSETTING(      0x2800, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(      0x1000, DEF_STR( 3C_2C ) ) /* Works like 2C/1C then 1C/1C repeat */
	PORT_DIPSETTING(      0x2000, DEF_STR( 2C_2C ) ) /* Works the same as 1C/1C */
	PORT_DIPSETTING(      0x3800, DEF_STR( 1C_1C ) )
	PORT_DIPNAME( 0x4000, 0x4000, "Coin Box" )          PORT_DIPLOCATION("SW2:7") /* Funtionally reversed?? */
	PORT_DIPSETTING(      0x4000, "1" ) /* Credits from Coin1 or Coin2 */
	PORT_DIPSETTING(      0x0000, "2" ) /* Doesn't credit up from Coin2 */
	PORT_SERVICE_DIPLOC(  0x8000, IP_ACTIVE_LOW, "SW2:8" ) /* Verified */
INPUT_PORTS_END

static const gfx_layout tlayout =
{
	16,16,
	RGN_FRAC(1,2),
	4,
	{ RGN_FRAC(1,2)+8, RGN_FRAC(1,2)+0, 8, 0 },
	{ 32*8+0, 32*8+1, 32*8+2, 32*8+3, 32*8+4, 32*8+5, 32*8+6, 32*8+7,
			0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,
			8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16 },
	64*8
};


static GFXDECODE_START( silvmil )
	GFXDECODE_ENTRY( "gfx2", 0, tlayout,       0, 64 )  /* Tiles 16x16 */
	GFXDECODE_ENTRY( "gfx1", 0, tlayout,       0, 64 )  /* Sprites 16x16 */
GFXDECODE_END


void silvmil_state::machine_start()
{
}

void silvmil_state::machine_reset()
{
	m_silvmil_tilebank[0] = 0;
	m_silvmil_tilebank[1] = 0;
	m_silvmil_tilebank[2] = 0;
	m_silvmil_tilebank[3] = 0;
	m_whichbank = 0;
}


static ADDRESS_MAP_START( silvmil_sound_map, AS_PROGRAM, 8, silvmil_state )
	AM_RANGE(0x0000, 0xbfff) AM_ROM
	AM_RANGE(0xd000, 0xd7ff) AM_RAM
	AM_RANGE(0xc000, 0xc001) AM_DEVREADWRITE("ymsnd", ym2151_device, read, write)
	AM_RANGE(0xc002, 0xc002) AM_DEVREADWRITE("oki", okim6295_device, read, write) AM_MIRROR(1)
	AM_RANGE(0xc006, 0xc006) AM_READ(soundlatch_byte_r)
	AM_RANGE(0xc00f, 0xc00f) AM_WRITENOP // ??
ADDRESS_MAP_END

/* CLOCKS UNKNOWN! */

static MACHINE_CONFIG_START( silvmil, silvmil_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", M68000, XTAL_12MHz)
	MCFG_CPU_PROGRAM_MAP(silvmil_map)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", silvmil_state,  irq6_line_hold)

	MCFG_CPU_ADD("audiocpu", Z80, XTAL_4_096MHz) // 4.096MHz or 3.579545MHz - Need to verify
	MCFG_CPU_PROGRAM_MAP(silvmil_sound_map)


	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MCFG_SCREEN_SIZE(64*8, 64*8)
	MCFG_SCREEN_VISIBLE_AREA(0, 40*8-1, 0, 30*8-1)
	MCFG_SCREEN_UPDATE_DRIVER(silvmil_state, screen_update_silvmil)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_PALETTE_ADD("palette", 0x300)
	MCFG_PALETTE_FORMAT(xRRRRRGGGGGBBBBB)
	MCFG_GFXDECODE_ADD("gfxdecode", "palette", silvmil)


	MCFG_DEVICE_ADD("spritegen", DECO_SPRITE, 0)
	MCFG_DECO_SPRITE_GFX_REGION(0)
	MCFG_DECO_SPRITE_ISBOOTLEG(true)
	MCFG_DECO_SPRITE_OFFSETS(5, 7)
	MCFG_DECO_SPRITE_GFXDECODE("gfxdecode")
	MCFG_DECO_SPRITE_PALETTE("palette")

	MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")

	MCFG_YM2151_ADD("ymsnd", XTAL_14_31818MHz/4)
	MCFG_YM2151_IRQ_HANDLER(INPUTLINE("audiocpu", 0))
	MCFG_SOUND_ROUTE(0, "lspeaker", 0.50)
	MCFG_SOUND_ROUTE(1, "rspeaker", 0.50)

	MCFG_OKIM6295_ADD("oki", XTAL_4_096MHz/4, OKIM6295_PIN7_HIGH) // Need to verify
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.2)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.2)
MACHINE_CONFIG_END


ROM_START( silvmil )
	ROM_REGION( 0x100000, "maincpu", 0 ) /* 68k */
	ROM_LOAD16_BYTE( "d-13_u3.bin", 0x00000, 0x40000, CRC(46106c59) SHA1(ab965c1ea9ce89a67875530d76ac2bde7fd13e13) )
	ROM_LOAD16_BYTE( "d-14_u2.bin", 0x00001, 0x40000, CRC(65421eca) SHA1(5258df7ceab6427e1b6f93f51896f7f3a651300c) )

	ROM_REGION( 0x10000, "audiocpu", 0 ) /* z80  */
	ROM_LOAD( "d-11_uz02.bin", 0x00000, 0x10000, CRC(b41289e6) SHA1(edf83206de418757a154d5a085b0b2fd97a77807) )

	ROM_REGION( 0x40000, "oki", 0 ) /* samples */
	ROM_LOAD( "d-12_uz1.bin", 0x00000, 0x40000, CRC(a170d8a9) SHA1(77339382570498f9f6eeb80595bfe72fc853fd68))

	ROM_REGION( 0x400000, "gfx1", 0 )
	ROM_LOAD16_BYTE( "d-16_u41.bin",   0x000000, 0x20000, CRC(ff5ea605) SHA1(38e32f391b211ed280dd7f05eb13301cb9ddf57c) )
	ROM_CONTINUE ( 0x200000,0x20000 )
	ROM_CONTINUE ( 0x040000,0x20000 )
	ROM_CONTINUE ( 0x240000,0x20000 )
	ROM_LOAD16_BYTE( "d-15_u42.bin",   0x000001, 0x20000, CRC(5f72d6cc) SHA1(88641a42c0fc6e84ffd009fb40d0b1774e8c0630) )
	ROM_CONTINUE ( 0x200001,0x20000 )
	ROM_CONTINUE ( 0x040001,0x20000 )
	ROM_CONTINUE ( 0x240001,0x20000 )
	ROM_LOAD16_BYTE( "d-20_pat01.bin", 0x080001, 0x20000, CRC(cc4d3b49) SHA1(a2ef0d949443c9133487f83d5879daabca688d66) )
	ROM_CONTINUE ( 0x280001,0x20000 )
	ROM_CONTINUE ( 0x0c0001,0x20000 )
	ROM_CONTINUE ( 0x2c0001,0x20000 )
	ROM_LOAD16_BYTE( "d-17_pat11.bin", 0x080000, 0x20000, CRC(2facb3f1) SHA1(ea380345e1f15451e1ded5de178ec4648c33e2f0) )
	ROM_CONTINUE ( 0x280000,0x20000 )
	ROM_CONTINUE ( 0x0c0000,0x20000 )
	ROM_CONTINUE ( 0x2c0000,0x20000 )
	ROM_LOAD16_BYTE( "d-17_pat02.bin", 0x100001, 0x20000, CRC(addc5261) SHA1(73c5e29a39364c286a110678eb65b85ab1cf97d4) )
	ROM_CONTINUE ( 0x300001,0x20000)
	ROM_CONTINUE ( 0x140001,0x20000)
	ROM_CONTINUE ( 0x340001,0x20000)
	ROM_LOAD16_BYTE( "d-18_pat12.bin", 0x100000, 0x20000, CRC(a429b237) SHA1(ab709b93c5232f3fdbb60954f93d04bb3828ac76) )
	ROM_CONTINUE ( 0x300000,0x20000)
	ROM_CONTINUE ( 0x140000,0x20000)
	ROM_CONTINUE ( 0x340000,0x20000)
	ROM_LOAD16_BYTE( "d-18_pat03.bin", 0x180001, 0x20000, CRC(36b9c407) SHA1(291e29a2f5de6db639988e99a010fcac233387ad) )
	ROM_CONTINUE ( 0x380001,0x20000)
	ROM_CONTINUE ( 0x1c0001,0x20000)
	ROM_CONTINUE ( 0x3c0001,0x20000)
	ROM_LOAD16_BYTE( "d-19_pat13.bin", 0x180000, 0x20000, CRC(af2507ce) SHA1(280b3995a6164e4ef834247d637ee46c61bf9950) )
	ROM_CONTINUE ( 0x380000,0x20000)
	ROM_CONTINUE ( 0x1c0000,0x20000)
	ROM_CONTINUE ( 0x3c0000,0x20000)

	ROM_REGION( 0x200000, "gfx2", 0 ) /* sprites */
	ROM_LOAD16_BYTE( "d-17_u53.bin", 0x000000, 0x80000, CRC(4d177bda) SHA1(980205dead92830362095dac61d2e99bf62f0f5d) )
	ROM_LOAD16_BYTE( "d-18_u54.bin", 0x000001, 0x80000, CRC(218c4471) SHA1(6a64d7a6c18eb078a5848f4f97aa0c65e74ad3d9) )
	ROM_LOAD16_BYTE( "d-19_u55.bin", 0x100000, 0x80000, CRC(59507521) SHA1(8e0eaf8ecdfcaefccb5657278ecb2fea7489afb3) )
	ROM_LOAD16_BYTE( "d-20_u56.bin", 0x100001, 0x80000, CRC(e67c2c7d) SHA1(cddfd6a3d934e71853af62e3d2bf312618c9b4ff) )
ROM_END


void silvmil_state::tumblepb_gfx1_rearrange()
{
	UINT8 *rom = memregion("gfx1")->base();
	int len = memregion("gfx1")->bytes();
	int i;

	/* gfx data is in the wrong order */
	for (i = 0; i < len; i++)
	{
		if ((i & 0x20) == 0)
		{
			int t = rom[i]; rom[i] = rom[i + 0x20]; rom[i + 0x20] = t;
		}
	}
	/* low/high half are also swapped */
	for (i = 0; i < len / 2; i++)
	{
		int t = rom[i]; rom[i] = rom[i + len / 2]; rom[i + len / 2] = t;
	}
}

DRIVER_INIT_MEMBER(silvmil_state,silvmil)
{
	tumblepb_gfx1_rearrange();
}

GAME( 1995, silvmil, 0, silvmil, silvmil, silvmil_state, silvmil, ROT270, "Para", "Silver Millennium", 0 )