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
|
/********************************************************************
G-Stream (c)2002 Oriental Soft Japan
Are 'Oriental Soft Japan' actually a Korean company?
Hyperstone based hardware
Simple Sprites (16x16x8bpp tiles)
3 Simple Tilemaps (32x32x8bpp tiles)
todo: sprite lag (sprites need buffering?)
sound banking
CPU: E1-32XT
Sound: 2x AD-65 (OKIM6295 clone)
Xtals: 1.000Mhz (near AD-65a)
16.000Mhz (near E1-32XT / u56.bin)
27.000Mhz (near GFX Section & 54.000Mhz)
54.000Mhz (near GFX Section & 27.000Mhz)
notes:
cpu #0 (PC=00002C34): unmapped program memory dword read from 515ECE48 & FFFFFFFF
what is this, buggy code?
Is there a problem with the OKI status reads for the AD-65 clone? the game reads
the status register all the time, causing severe slowdown etc, might be related to
bad OKI banking tho.
---
Dump Notes:::
G-Stream 2020, 2002 Oriental Soft Japan
Shooter from Oriental soft, heavy influence from XII Stag
as well as Trizeal. Three weapons may be carried and their
power controlled by picking up capsules of a specific colour.
Three capsule types:
. Red - Vulcan
. Green - Missiles
. Blue - Laser
Points are awarded by picking up medals which are released
from shot down enemies. The medal value and appearance is
increased as long as you don't miss any.
When enough medals have been picked up a "void" bomb becomes
available which when released (hold down main shot) will create
a circular "void". Enemy bullets which hit this "void" are transformed
into medals. If you place your ship inside this "void" it becomes
invulnerable like in XII Stag.
The game is powered by a HyperStone E1-32XT. A battery on the PCB
saves hi-scores. Hi-Scores can be reset by toggling switch S2.
Documentation:
Name Size CRC32
----------------------------------------
g-stream_demo.jpg 195939 0x37984e02
g-stream_title.jpg 152672 0xf7b9bfd3
g-stream_pcb.jpg 2563664 0x5ec864f3
Name Size CRC32 Chip Type
---------------------------------------------
gs_prg_02.bin 2097152 0x2f8a6bea 27C160
gs_gr_01.bin 2097152 0xb82cfab8 27C160
gs_gr_02.bin 2097152 0x37e19cbd 27C160
gs_gr_03.bin 2097152 0x1a3b2b11 27C160
gs_gr_04.bin 2097152 0xa4e8906c 27C160
gs_gr_05.bin 2097152 0xef283a73 27C160
gs_gr_06.bin 2097152 0xd4e3a2b2 27C160
gs_gr_07.bin 2097152 0x84e66fe1 27C160
gs_gr_08.bin 2097152 0xabd0d6aa 27C160
gs_gr_09.bin 2097152 0xf2c4fd77 27C160
gs_gr_10.bin 2097152 0xd696d15d 27C160
gs_gr_11.bin 2097152 0x946d71d1 27C160
gs_gr_12.bin 2097152 0x94b56e4e 27C160
gs_gr_13.bin 2097152 0x7daaeff0 27C160
gs_gr_14.bin 2097152 0x6bd2a1e1 27C160
gs_snd_01.bin 524288 0x79b64d3f 27C040
gs_snd_02.bin 524288 0xe49ed92c 27C040
gs_snd_03.bin 524288 0x2bfff4ac 27C040
gs_snd_04.bin 524288 0xb259de3b 27C040
u56.bin 524288 0x0d0c6a38 27C040
. Board supplied by Tormod
. Board dumped by Tormod
*********************************************************************/
#include "driver.h"
#include "sound/okim6295.h"
static UINT32 *gstream_vram;
static UINT32 *gstream_workram;
static tilemap *gstream_tilemap1;
static tilemap *gstream_tilemap2;
static tilemap *gstream_tilemap3;
static UINT32 tilemap1_scrollx, tilemap2_scrollx, tilemap3_scrollx;
static UINT32 tilemap1_scrolly, tilemap2_scrolly, tilemap3_scrolly;
static WRITE32_HANDLER( gstream_palette_w )
{
COMBINE_DATA(&paletteram32[offset]);
palette_set_color_rgb(Machine,offset*2,pal5bit(paletteram32[offset] >> (0+16)),
pal5bit(paletteram32[offset] >> (6+16)),
pal5bit(paletteram32[offset] >> (11+16)));
palette_set_color_rgb(Machine,offset*2+1,pal5bit(paletteram32[offset] >> (0)),
pal5bit(paletteram32[offset] >> (6)),
pal5bit(paletteram32[offset] >> (11)));
}
static WRITE32_HANDLER( gstream_vram_w )
{
COMBINE_DATA(&gstream_vram[offset]);
if (ACCESSING_MSB32)
{
if (offset>=0x000/4 && offset<0x400/4)
{
tilemap_mark_tile_dirty(gstream_tilemap1,offset-(0x000/4));
}
else if (offset>=0x400/4 && offset<0x800/4)
{
tilemap_mark_tile_dirty(gstream_tilemap2,offset-(0x400/4));
}
else if (offset>=0x800/4 && offset<0xc00/4)
{
tilemap_mark_tile_dirty(gstream_tilemap3,offset-(0x800/4));
}
}
}
static WRITE32_HANDLER( gstream_tilemap1_scrollx_w ) { tilemap1_scrollx = data; }
static WRITE32_HANDLER( gstream_tilemap1_scrolly_w ) { tilemap1_scrolly = data; }
static WRITE32_HANDLER( gstream_tilemap2_scrollx_w ) { tilemap2_scrollx = data; }
static WRITE32_HANDLER( gstream_tilemap2_scrolly_w ) { tilemap2_scrolly = data; }
static WRITE32_HANDLER( gstream_tilemap3_scrollx_w ) { tilemap3_scrollx = data; }
static WRITE32_HANDLER( gstream_tilemap3_scrolly_w ) { tilemap3_scrolly = data; }
static ADDRESS_MAP_START( gstream_32bit_map, ADDRESS_SPACE_PROGRAM, 32 )
AM_RANGE(0x00000000, 0x003FFFFF) AM_RAM AM_BASE(&gstream_workram) // work ram
// AM_RANGE(0x40000000, 0x40FFFFFF) AM_RAM // ?? lots of data gets copied here if present, but game runs without it??
AM_RANGE(0x80000000, 0x80003FFF) AM_RAM AM_WRITE(gstream_vram_w) AM_BASE(&gstream_vram) // video ram
AM_RANGE(0x4E000000, 0x4E1FFFFF) AM_ROM AM_REGION(REGION_USER2,0) // main game rom
AM_RANGE(0x4F000000, 0x4F000003) AM_WRITE(gstream_tilemap3_scrollx_w)
AM_RANGE(0x4F200000, 0x4F200003) AM_WRITE(gstream_tilemap3_scrolly_w)
AM_RANGE(0x4F400000, 0x4F406FFF) AM_RAM AM_WRITE(gstream_palette_w) AM_BASE(&paletteram32)
AM_RANGE(0x4F800000, 0x4F800003) AM_WRITE(gstream_tilemap1_scrollx_w)
AM_RANGE(0x4FA00000, 0x4FA00003) AM_WRITE(gstream_tilemap1_scrolly_w)
AM_RANGE(0x4FC00000, 0x4FC00003) AM_WRITE(gstream_tilemap2_scrollx_w)
AM_RANGE(0x4FE00000, 0x4FE00003) AM_WRITE(gstream_tilemap2_scrolly_w)
AM_RANGE(0xFFC00000, 0xFFC01FFF) AM_RAM AM_BASE(&generic_nvram32) AM_SIZE(&generic_nvram_size) // Backup RAM
AM_RANGE(0xFFF80000, 0xFFFFFFFF) AM_ROM AM_REGION(REGION_USER1,0) // boot rom
ADDRESS_MAP_END
static READ32_HANDLER( gstream_oki_0_r ) { return OKIM6295_status_0_r(0); }
static READ32_HANDLER( gstream_oki_1_r ) { return OKIM6295_status_1_r(0); }
static WRITE32_HANDLER( gstream_oki_0_w ) { OKIM6295_data_0_w(0, data & 0xff); }
static WRITE32_HANDLER( gstream_oki_1_w ) { OKIM6295_data_1_w(0, data & 0xff); }
static WRITE32_HANDLER( gstream_oki_4030_w )
{
/*
// the only nibbles that are written are: 0x6 0x7 0x9 0xa 0xb 0xe 0xd 0xf which should map to the 8 oki banks
static const int bank_lookup[16] = { -1, -1, -1, -1, -1, -1, 0, 1, -1, 2, 3, 4, -1, 5, 6, 7 };
static int old_bank_0 = -1;
static int old_bank_1 = -1;
if(bank_lookup[data & 0xf] != old_bank_0)
{
old_bank_0 = bank_lookup[data & 0xf];
if(old_bank_0 != -1)
OKIM6295_set_bank_base(0, old_bank_0 * 0x40000);
else
logerror("oki_0 banking value = %X\n",data & 0xf);
}
if(bank_lookup[(data >> 4) & 0xf] != old_bank_1)
{
old_bank_1 = bank_lookup[(data >> 4) & 0xf];
if(old_bank_1 != -1)
OKIM6295_set_bank_base(1, old_bank_1 * 0x40000);
else
logerror("oki_1 banking value = %X\n",(data >> 4) & 0xf);
}
*/
}
static WRITE32_HANDLER( gstream_oki_4040_w )
{
// data == 0 or data == 0x81
}
static ADDRESS_MAP_START( gstream_io, ADDRESS_SPACE_IO, 32 )
AM_RANGE(0x4000, 0x4003) AM_READ(input_port_0_dword_r)
AM_RANGE(0x4010, 0x4013) AM_READ(input_port_1_dword_r)
AM_RANGE(0x4020, 0x4023) AM_READ(input_port_2_dword_r) // extra coin switches etc
AM_RANGE(0x4030, 0x4033) AM_WRITE(gstream_oki_4030_w) // ??
AM_RANGE(0x4040, 0x4043) AM_WRITE(gstream_oki_4040_w) // ??
AM_RANGE(0x4050, 0x4053) AM_READWRITE(gstream_oki_1_r, gstream_oki_1_w) // music
AM_RANGE(0x4060, 0x4063) AM_READWRITE(gstream_oki_0_r, gstream_oki_0_w) // samples
ADDRESS_MAP_END
static INPUT_PORTS_START( gstream )
PORT_START
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_BUTTON4 ) PORT_PLAYER(1)
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_SERVICE1 )
PORT_BIT( 0xe000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_SERVICE_NO_TOGGLE( 0x8000, IP_ACTIVE_LOW )
PORT_START
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_PLAYER(2)
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_SERVICE2 )
PORT_BIT( 0xe000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_SERVICE_NO_TOGGLE( 0x8000, IP_ACTIVE_LOW )
PORT_START
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_COIN1 ) // mirror of some inputs...
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0xffb0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_SERVICE_NO_TOGGLE( 0x40, IP_ACTIVE_LOW )
INPUT_PORTS_END
static const gfx_layout layout16x16 =
{
16,16,
RGN_FRAC(1,1),
8,
{ 0,1,2,3,4,5,6,7 },
{ 0,8,16,24, 32,40,48,56, 64,72,80,88 ,96,104,112,120 },
{ 0*128, 1*128, 2*128, 3*128, 4*128, 5*128, 6*128, 7*128, 8*128,9*128,10*128,11*128,12*128,13*128,14*128,15*128 },
16*128,
};
static const gfx_layout layout32x32 =
{
32,32,
RGN_FRAC(1,1),
8,
{ 0,1,2,3,4,5,6,7 },
{ 0, 8, 16, 24, 32, 40, 48, 56,
64, 72, 80, 88, 96, 104, 112, 120,
128, 136, 144, 152, 160, 168, 176, 184,
192, 200, 208, 216, 224, 232, 240, 248 },
{ 0*256, 1*256, 2*256, 3*256, 4*256, 5*256, 6*256, 7*256,
8*256, 9*256, 10*256, 11*256, 12*256, 13*256, 14*256, 15*256,
16*256, 17*256, 18*256, 19*256, 20*256, 21*256, 22*256, 23*256,
24*256, 25*256, 26*256, 27*256, 28*256, 29*256, 30*256, 31*256,
},
32*256,
};
static GFXDECODE_START( gstream )
GFXDECODE_ENTRY( REGION_GFX2, 0, layout32x32, 0, 0x80 )
GFXDECODE_ENTRY( REGION_GFX1, 0, layout16x16, 0, 0x80 )
GFXDECODE_END
static TILE_GET_INFO( get_gs1_tile_info )
{
int tileno, palette;
tileno = (gstream_vram[tile_index+0x000/4]&0x0fff0000)>>16;
palette = (gstream_vram[tile_index+0x000/4]&0xc0000000)>>30;
SET_TILE_INFO(0,tileno,palette+0x10,0);
}
static TILE_GET_INFO( get_gs2_tile_info )
{
int tileno, palette;
tileno = (gstream_vram[tile_index+0x400/4]&0x0fff0000)>>16;
palette =(gstream_vram[tile_index+0x400/4]&0xc0000000)>>30;
SET_TILE_INFO(0,tileno+0x1000,palette+0x14,0);
}
static TILE_GET_INFO( get_gs3_tile_info )
{
int tileno, palette;
tileno = (gstream_vram[tile_index+0x800/4]&0x0fff0000)>>16;
palette =(gstream_vram[tile_index+0x800/4]&0xc0000000)>>30;
SET_TILE_INFO(0,tileno+0x2000,palette+0x18,0);
}
static VIDEO_START(gstream)
{
gstream_tilemap1 = tilemap_create(get_gs1_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN, 32, 32,16,16);
gstream_tilemap2 = tilemap_create(get_gs2_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN, 32, 32,16,16);
gstream_tilemap3 = tilemap_create(get_gs3_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN, 32, 32,16,16);
tilemap_set_transparent_pen(gstream_tilemap1,0);
tilemap_set_transparent_pen(gstream_tilemap2,0);
}
static VIDEO_UPDATE(gstream)
{
/* The tilemaps and sprite sre interleaved together.
Even Words are tilemap tiles
Odd Words are sprite data
Sprites start at the top of memory, tilemaps at
the bottom, but the areas can overlap
*What seems an actual game bug*
when a sprite ends up with a negative co-ordinate
a value of 0xfffffffe gets set in the sprite list.
this could corrupt the tile value as both words
are being set ?!
*/
int i;
//popmessage("(1) %08x %08x (2) %08x %08x (3) %08x %08x", tilemap1_scrollx, tilemap1_scrolly, tilemap2_scrollx, tilemap2_scrolly, tilemap3_scrollx, tilemap3_scrolly );
tilemap_set_scrollx( gstream_tilemap3, 0, tilemap3_scrollx>>16 );
tilemap_set_scrolly( gstream_tilemap3, 0, tilemap3_scrolly>>16 );
tilemap_set_scrollx( gstream_tilemap1, 0, tilemap1_scrollx>>16 );
tilemap_set_scrolly( gstream_tilemap1, 0, tilemap1_scrolly>>16 );
tilemap_set_scrollx( gstream_tilemap2, 0, tilemap2_scrollx>>16 );
tilemap_set_scrolly( gstream_tilemap2, 0, tilemap2_scrolly>>16 );
tilemap_draw(bitmap,cliprect,gstream_tilemap3,0,0);
tilemap_draw(bitmap,cliprect,gstream_tilemap2,0,0);
tilemap_draw(bitmap,cliprect,gstream_tilemap1,0,0);
for (i=0x0000/4;i<0x4000/4;i+=4)
{
/* Upper bits are used by the tilemaps */
int code = gstream_vram[i+0] & 0xffff;
int x = gstream_vram[i+1] & 0xffff;
int y = gstream_vram[i+2] & 0xffff;
int col = gstream_vram[i+3] & 0x1f;
/* co-ordinates are signed */
if (x & 0x8000) x-=0x10000;
if (y & 0x8000) y-=0x10000;
drawgfx(bitmap,machine->gfx[1],code,col,0,0,x-2,y,cliprect,TRANSPARENCY_PEN,0);
}
return 0;
}
static MACHINE_DRIVER_START( gstream )
MDRV_CPU_ADD_TAG("main", E132XT, 16000000*4) /* 4x internal multiplier */
MDRV_CPU_PROGRAM_MAP(gstream_32bit_map,0)
MDRV_CPU_IO_MAP(gstream_io,0)
MDRV_CPU_VBLANK_INT(irq0_line_hold,1)
MDRV_SCREEN_REFRESH_RATE(60)
MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)
/* video hardware */
MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_SIZE(320, 240)
MDRV_SCREEN_VISIBLE_AREA(0, 319, 0, 239)
MDRV_PALETTE_LENGTH(0x1000 + 0x400 + 0x400 + 0x400) // sprites + 3 bg layers
MDRV_GFXDECODE(gstream)
MDRV_NVRAM_HANDLER(generic_1fill)
MDRV_VIDEO_START(gstream)
MDRV_VIDEO_UPDATE(gstream)
MDRV_SPEAKER_STANDARD_MONO("mono")
MDRV_SOUND_ADD(OKIM6295, 1000000) /* 1 Mhz? */
MDRV_SOUND_CONFIG(okim6295_interface_region_1_pin7low) // pin 7 not verified
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MDRV_SOUND_ADD(OKIM6295, 1000000) /* 1 Mhz? */
MDRV_SOUND_CONFIG(okim6295_interface_region_2_pin7low) // pin 7 not verified
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_DRIVER_END
ROM_START( gstream )
ROM_REGION32_BE( 0x080000, REGION_USER1, 0 ) /* Hyperstone CPU Code */
ROM_LOAD( "u56.bin", 0x000000, 0x080000, CRC(0d0c6a38) SHA1(a810bfc1c9158cccc37710d0ea7268e26e520cc2) )
ROM_REGION32_BE( 0x200000, REGION_USER2, 0 ) /* Hyperstone CPU Code */
ROM_LOAD16_WORD_SWAP( "gs_prg_02.bin", 0x000000, 0x200000, CRC(2f8a6bea) SHA1(c0a32838f4bd8599f09002139f87562db625c1c5) )
ROM_REGION( 0x1000000, REGION_GFX1, ROMREGION_DISPOSE ) /* sprite tiles (16x16x8) */
ROM_LOAD32_WORD( "gs_gr_07.bin", 0x000000, 0x200000, CRC(84e66fe1) SHA1(73d828714f9ed9baffdc06998f5bf3298396fe9c) )
ROM_LOAD32_WORD( "gs_gr_11.bin", 0x000002, 0x200000, CRC(946d71d1) SHA1(516bd3f4d7f5bce59f0593ed6565114dbd5a4ef0) )
ROM_LOAD32_WORD( "gs_gr_08.bin", 0x400000, 0x200000, CRC(abd0d6aa) SHA1(dd294bbdda05697df84247257f735ab51bc26ca3) )
ROM_LOAD32_WORD( "gs_gr_12.bin", 0x400002, 0x200000, CRC(94b56e4e) SHA1(7c3877f993e575326dbd4c2e5d7570747277b20d) )
ROM_LOAD32_WORD( "gs_gr_09.bin", 0x800000, 0x200000, CRC(f2c4fd77) SHA1(284c850688e3c0fd292a91a53e24fe3436dc4076) )
ROM_LOAD32_WORD( "gs_gr_13.bin", 0x800002, 0x200000, CRC(7daaeff0) SHA1(5766d9a3a8c0931305424e0089108ce8df7dfe41) )
ROM_LOAD32_WORD( "gs_gr_10.bin", 0xc00000, 0x200000, CRC(d696d15d) SHA1(85aaa5cdb35f3a8d3266bb8debec0558c860cb53) )
ROM_LOAD32_WORD( "gs_gr_14.bin", 0xc00002, 0x200000, CRC(6bd2a1e1) SHA1(aedca91643f14ececc101a7708255ce9b1d70f68) )
ROM_REGION( 0xc00000, REGION_GFX2, ROMREGION_DISPOSE ) /* bg tiles (32x32x8) */
ROM_LOAD( "gs_gr_01.bin", 0x000000, 0x200000, CRC(b82cfab8) SHA1(08f0eaef5c927fb056c6cc9342e39f445aae9062) )
ROM_LOAD( "gs_gr_02.bin", 0x200000, 0x200000, CRC(37e19cbd) SHA1(490ebb037fce09100ec4bba3f73ecdf101526641) )
ROM_LOAD( "gs_gr_03.bin", 0x400000, 0x200000, CRC(1a3b2b11) SHA1(a4b1dc1a9709f8f8f2ab2190d7badc246caa540f) )
ROM_LOAD( "gs_gr_04.bin", 0x600000, 0x200000, CRC(a4e8906c) SHA1(b285d7697cdaa62014cf65d09a19fcbd6a95bb98) )
ROM_LOAD( "gs_gr_05.bin", 0x800000, 0x200000, CRC(ef283a73) SHA1(8b598facb344eac33138611abc141a2acb375983) )
ROM_LOAD( "gs_gr_06.bin", 0xa00000, 0x200000, CRC(d4e3a2b2) SHA1(4577c007172c718bf7ca55a8ccee5455c281026c) )
ROM_REGION( 0x200000, REGION_SOUND1, 0 )
ROM_LOAD( "gs_snd_01.bin", 0x000000, 0x080000, CRC(79b64d3f) SHA1(b2166210d3a3b85b9ace90749a444c881f69d551) )
ROM_LOAD( "gs_snd_02.bin", 0x080000, 0x080000, CRC(e49ed92c) SHA1(a3d7b3fe93a786a246acf2657d9056398c793078) )
ROM_LOAD( "gs_snd_03.bin", 0x100000, 0x080000, CRC(2bfff4ac) SHA1(cce1bb3c78b86722c926854c737f9589806012ba) )
ROM_LOAD( "gs_snd_04.bin", 0x180000, 0x080000, CRC(b259de3b) SHA1(1a64f41d4344fefad5832332f1a7655e23f6b017) )
ROM_REGION( 0x200000, REGION_SOUND2, 0 )
ROM_COPY( REGION_SOUND1, 0, 0, 0x200000 )
ROM_END
static READ32_HANDLER( gstream_speedup_r )
{
if (activecpu_get_pc()==0xc0001592)
{
activecpu_eat_cycles(50);
}
return gstream_workram[0xd1ee0/4];
}
static DRIVER_INIT( gstream )
{
memory_install_read32_handler(0, ADDRESS_SPACE_PROGRAM, 0xd1ee0, 0xd1ee3, 0, 0, gstream_speedup_r );
}
GAME( 2002, gstream, 0, gstream, gstream, gstream, ROT270, "Oriental Soft Japan", "G-Stream G2020", GAME_IMPERFECT_SOUND )
|