summaryrefslogtreecommitdiffstatshomepage
path: root/trunk/src/mame/drivers/olibochu.c
diff options
context:
space:
mode:
Diffstat (limited to 'trunk/src/mame/drivers/olibochu.c')
-rw-r--r--trunk/src/mame/drivers/olibochu.c524
1 files changed, 524 insertions, 0 deletions
diff --git a/trunk/src/mame/drivers/olibochu.c b/trunk/src/mame/drivers/olibochu.c
new file mode 100644
index 00000000000..3bc850cf33b
--- /dev/null
+++ b/trunk/src/mame/drivers/olibochu.c
@@ -0,0 +1,524 @@
+/***************************************************************************
+
+Oli-Boo-Chu
+
+driver by Nicola Salmoria
+
+TODO:
+- main->sound cpu communication is completely wrong, commands don't play the
+ intended sound.
+
+============================================================================
+PSG table:
+data0 |data1 |sample | possible data trigger
+----------------------------------------------------------
+0x80 |0x00 | coin |
+0x08 |0x00 | opening melody |
+0x40 |0x00 | bgm |
+0x04 |0x00 | hi-score melody |
+0x02 |0x00 | ending melody |
+0x01 |0x00 | spot melody |
+0x10 |0x00 | clear melody |
+0x20 |0x00 | race trap melody |
+0x00 |0x80 | extend sound |
+0x00 |0x40 | oli paralyze |
+0x00 |0x04 | chu out |
+0x00 |0x08 | mystery sound |
+0x00 |0x01 | oli out |
+0x00 |0x10 | chu has food |
+0x00 |0x00 | <stop playing> |
+-----------------------------------------------------------
+ 0x02? *0xb doesn't do nothing
+ 0x20? *0xc doesn't do nothing
+
+$7004 writes, related to $7000 reads
+0x00-0x0f <don't care (retains previous value>
+0x10-0x1f 0x28
+0x20-0x2f 0x00
+0x30-0x3f 0x48
+0x40-0x4f 0x00
+0x50-0x5f 0x80
+0x60-0x6f 0x3a
+0x70-0x7f 0x70
+0x80-0x8f 0x0f
+0x90-0x9f 0x0a
+0xa0-0xaf 0x3a
+0xb0-0xbf 0x61
+0xc0-0xcf 0xca
+0xd0-0xdf 0x01
+0xe0-0xef 0x14
+0xf0-0xff 0x32
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "sound/ay8910.h"
+
+class olibochu_state : public driver_device
+{
+public:
+ olibochu_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag) { }
+
+ /* memory pointers */
+ UINT8 * m_videoram;
+ UINT8 * m_colorram;
+ UINT8 * m_spriteram;
+ UINT8 * m_spriteram2;
+// UINT8 * m_paletteram; // currently this uses generic palette handling
+ size_t m_spriteram_size;
+ size_t m_spriteram2_size;
+
+ /* video-related */
+ tilemap_t *m_bg_tilemap;
+
+ /* misc */
+ int m_cmd;
+};
+
+
+
+static PALETTE_INIT( olibochu )
+{
+ int i;
+
+ for (i = 0; i < machine.total_colors(); i++)
+ {
+ UINT8 pen;
+ int bit0, bit1, bit2, r, g, b;
+
+ if (i < 0x100)
+ /* characters */
+ pen = (color_prom[0x020 + (i - 0x000)] & 0x0f) | 0x10;
+ else
+ /* sprites */
+ pen = (color_prom[0x120 + (i - 0x100)] & 0x0f) | 0x00;
+
+ /* red component */
+ bit0 = BIT(color_prom[pen], 0);
+ bit1 = BIT(color_prom[pen], 1);
+ bit2 = BIT(color_prom[pen], 2);
+ r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
+
+ /* green component */
+ bit0 = BIT(color_prom[pen], 3);
+ bit1 = BIT(color_prom[pen], 4);
+ bit2 = BIT(color_prom[pen], 5);
+ g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
+
+ /* blue component */
+ bit0 = BIT(color_prom[pen], 6);
+ bit1 = BIT(color_prom[pen], 7);
+ b = 0x4f * bit0 + 0xa8 * bit1;
+
+ palette_set_color(machine, i, MAKE_RGB(r, g, b));
+ }
+}
+
+static WRITE8_HANDLER( olibochu_videoram_w )
+{
+ olibochu_state *state = space->machine().driver_data<olibochu_state>();
+ state->m_videoram[offset] = data;
+ tilemap_mark_tile_dirty(state->m_bg_tilemap, offset);
+}
+
+static WRITE8_HANDLER( olibochu_colorram_w )
+{
+ olibochu_state *state = space->machine().driver_data<olibochu_state>();
+ state->m_colorram[offset] = data;
+ tilemap_mark_tile_dirty(state->m_bg_tilemap, offset);
+}
+
+static WRITE8_HANDLER( olibochu_flipscreen_w )
+{
+ if (flip_screen_get(space->machine()) != (data & 0x80))
+ {
+ flip_screen_set(space->machine(), data & 0x80);
+ tilemap_mark_all_tiles_dirty_all(space->machine());
+ }
+
+ /* other bits are used, but unknown */
+}
+
+static TILE_GET_INFO( get_bg_tile_info )
+{
+ olibochu_state *state = machine.driver_data<olibochu_state>();
+ int attr = state->m_colorram[tile_index];
+ int code = state->m_videoram[tile_index] + ((attr & 0x20) << 3);
+ int color = (attr & 0x1f) + 0x20;
+ int flags = ((attr & 0x40) ? TILE_FLIPX : 0) | ((attr & 0x80) ? TILE_FLIPY : 0);
+
+ SET_TILE_INFO(0, code, color, flags);
+}
+
+static VIDEO_START( olibochu )
+{
+ olibochu_state *state = machine.driver_data<olibochu_state>();
+ state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_rows, 8, 8, 32, 32);
+}
+
+static void draw_sprites( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect )
+{
+ olibochu_state *state = machine.driver_data<olibochu_state>();
+ UINT8 *spriteram = state->m_spriteram;
+ UINT8 *spriteram_2 = state->m_spriteram2;
+ int offs;
+
+ /* 16x16 sprites */
+ for (offs = 0; offs < state->m_spriteram_size; offs += 4)
+ {
+ int attr = spriteram[offs + 1];
+ int code = spriteram[offs];
+ int color = attr & 0x3f;
+ int flipx = attr & 0x40;
+ int flipy = attr & 0x80;
+ int sx = spriteram[offs + 3];
+ int sy = ((spriteram[offs + 2] + 8) & 0xff) - 8;
+
+ if (flip_screen_get(machine))
+ {
+ sx = 240 - sx;
+ sy = 240 - sy;
+ flipx = !flipx;
+ flipy = !flipy;
+ }
+
+ drawgfx_transpen(bitmap, cliprect,
+ machine.gfx[1],
+ code, color,
+ flipx, flipy,
+ sx, sy, 0);
+ }
+
+ /* 8x8 sprites */
+ for (offs = 0; offs < state->m_spriteram2_size; offs += 4)
+ {
+ int attr = spriteram_2[offs + 1];
+ int code = spriteram_2[offs];
+ int color = attr & 0x3f;
+ int flipx = attr & 0x40;
+ int flipy = attr & 0x80;
+ int sx = spriteram_2[offs + 3];
+ int sy = spriteram_2[offs + 2];
+
+ if (flip_screen_get(machine))
+ {
+ sx = 248 - sx;
+ sy = 248 - sy;
+ flipx = !flipx;
+ flipy = !flipy;
+ }
+
+ drawgfx_transpen(bitmap, cliprect,
+ machine.gfx[0],
+ code, color,
+ flipx, flipy,
+ sx, sy, 0);
+ }
+}
+
+static SCREEN_UPDATE( olibochu )
+{
+ olibochu_state *state = screen->machine().driver_data<olibochu_state>();
+ tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0);
+ draw_sprites(screen->machine(), bitmap, cliprect);
+ return 0;
+}
+
+
+static WRITE8_HANDLER( sound_command_w )
+{
+ olibochu_state *state = space->machine().driver_data<olibochu_state>();
+ int c;
+
+ if (offset == 0)
+ state->m_cmd = (state->m_cmd & 0x00ff) | (data << 8);
+ else
+ state->m_cmd = (state->m_cmd & 0xff00) | data;
+
+ for (c = 15; c >= 0; c--)
+ if (state->m_cmd & (1 << c)) break;
+
+ if (c >= 0) soundlatch_w(space, 0, 15 - c);
+}
+
+
+static ADDRESS_MAP_START( olibochu_map, AS_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x7fff) AM_ROM
+ AM_RANGE(0x8000, 0x83ff) AM_RAM_WRITE(olibochu_videoram_w) AM_BASE_MEMBER(olibochu_state, m_videoram)
+ AM_RANGE(0x8400, 0x87ff) AM_RAM_WRITE(olibochu_colorram_w) AM_BASE_MEMBER(olibochu_state, m_colorram)
+ AM_RANGE(0x9000, 0x903f) AM_RAM //???
+ AM_RANGE(0x9800, 0x983f) AM_RAM //???
+ AM_RANGE(0xa000, 0xa000) AM_READ_PORT("IN0")
+ AM_RANGE(0xa001, 0xa001) AM_READ_PORT("IN1")
+ AM_RANGE(0xa002, 0xa002) AM_READ_PORT("IN2")
+ AM_RANGE(0xa003, 0xa003) AM_READ_PORT("DSW0")
+ AM_RANGE(0xa004, 0xa004) AM_READ_PORT("DSW1")
+ AM_RANGE(0xa005, 0xa005) AM_READ_PORT("DSW2")
+ AM_RANGE(0xa800, 0xa801) AM_WRITE(sound_command_w)
+ AM_RANGE(0xa802, 0xa802) AM_WRITE(olibochu_flipscreen_w) /* bit 6 = enable sound? */
+ AM_RANGE(0xf400, 0xf41f) AM_RAM AM_BASE_SIZE_MEMBER(olibochu_state, m_spriteram, m_spriteram_size)
+ AM_RANGE(0xf440, 0xf47f) AM_RAM AM_BASE_SIZE_MEMBER(olibochu_state, m_spriteram2, m_spriteram2_size)
+ AM_RANGE(0xf000, 0xffff) AM_RAM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( olibochu_sound_map, AS_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x1fff) AM_ROM
+ AM_RANGE(0x6000, 0x63ff) AM_RAM
+ AM_RANGE(0x7000, 0x7000) AM_READ(soundlatch_r) /* likely ay8910 input port, not direct */
+ AM_RANGE(0x7000, 0x7001) AM_DEVWRITE("aysnd", ay8910_address_data_w)
+ AM_RANGE(0x7004, 0x7004) AM_WRITENOP //sound filter?
+ AM_RANGE(0x7006, 0x7006) AM_WRITENOP //irq ack?
+ADDRESS_MAP_END
+
+
+static INPUT_PORTS_START( olibochu )
+ PORT_START("IN0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE1 )
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 ) /* works in service mode but not in game */
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )
+
+ PORT_START("IN1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("IN2")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_PLAYER(2)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_PLAYER(2)
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_PLAYER(2)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY PORT_PLAYER(2)
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START("DSW0") /* Listed as sw1 */
+ PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
+ PORT_DIPSETTING( 0x00, "2" )
+ PORT_DIPSETTING( 0x03, "3" )
+ PORT_DIPSETTING( 0x02, "4" )
+ PORT_DIPSETTING( 0x01, "5" )
+ PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Bonus_Life ) )
+ PORT_DIPSETTING( 0x0c, "5000" )
+ PORT_DIPSETTING( 0x08, "10000" )
+ PORT_DIPSETTING( 0x04, "15000" )
+ PORT_DIPSETTING( 0x00, DEF_STR( None ) )
+ PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) /* Nothing listed for this DIP */
+ PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) /* Nothing listed for this DIP */
+ PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x40, 0x00, DEF_STR( Cabinet ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
+ PORT_DIPSETTING( 0x40, DEF_STR( Cocktail ) )
+ PORT_DIPNAME( 0x80, 0x80, "Cross Hatch Pattern" )
+ PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+
+ PORT_START("DSW1") /* Most likely not a bank of Dip Switches */
+ PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
+ PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
+ PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
+ PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
+ PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
+ PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
+ PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
+ PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
+ PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+
+ PORT_START("DSW2") /* Listed as sw2 */
+ PORT_DIPNAME( 0x01, 0x01, "Stop Mode (Cheat)") /* In stop mode, press 2 to stop and 1 to restart */
+ PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x0e, 0x0e, DEF_STR( Coin_A ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( 4C_1C ) )
+ PORT_DIPSETTING( 0x02, DEF_STR( 3C_1C ) )
+ PORT_DIPSETTING( 0x04, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x0e, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x0c, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x0a, DEF_STR( 1C_3C ) )
+ PORT_DIPSETTING( 0x08, DEF_STR( 1C_4C ) )
+ PORT_DIPSETTING( 0x06, DEF_STR( 1C_5C ) )
+ PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
+ PORT_DIPNAME( 0x20, 0x20, "Invulnerability (Cheat)" ) /* Listed as "No Hit" */
+ PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) /* Listed as "Start Pattern"... Level Select or Preview?? */
+ PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+ PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) /* Listed as "Screen 180" currently has no effect */
+ PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+INPUT_PORTS_END
+
+
+
+static const gfx_layout charlayout =
+{
+ 8,8,
+ RGN_FRAC(1,2),
+ 2,
+ { RGN_FRAC(1,2), 0 },
+ { 7, 6, 5, 4, 3, 2, 1, 0 },
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
+ 8*8
+};
+
+static const gfx_layout spritelayout =
+{
+ 16,16,
+ RGN_FRAC(1,2),
+ 2,
+ { RGN_FRAC(1,2), 0 },
+ { 7, 6, 5, 4, 3, 2, 1, 0,
+ 16*8+7, 16*8+6, 16*8+5, 16*8+4, 16*8+3, 16*8+2, 16*8+1, 16*8+0 },
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
+ 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
+ 32*8
+};
+
+static GFXDECODE_START( olibochu )
+ GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 64 )
+ GFXDECODE_ENTRY( "gfx2", 0, spritelayout, 256, 64 )
+GFXDECODE_END
+
+
+
+
+static MACHINE_START( olibochu )
+{
+ olibochu_state *state = machine.driver_data<olibochu_state>();
+
+ state->save_item(NAME(state->m_cmd));
+}
+
+static MACHINE_RESET( olibochu )
+{
+ olibochu_state *state = machine.driver_data<olibochu_state>();
+
+ state->m_cmd = 0;
+}
+
+static TIMER_DEVICE_CALLBACK( olibochu_scanline )
+{
+ int scanline = param;
+
+ if(scanline == 248) // vblank-out irq
+ cputag_set_input_line_and_vector(timer.machine(), "maincpu", 0, HOLD_LINE, 0xd7); /* RST 10h - vblank */
+
+ if(scanline == 0) // sprite buffer irq
+ cputag_set_input_line_and_vector(timer.machine(), "maincpu", 0, HOLD_LINE, 0xcf); /* RST 08h */
+}
+
+static MACHINE_CONFIG_START( olibochu, olibochu_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", Z80, 4000000) /* 4 MHz ?? */
+ MCFG_CPU_PROGRAM_MAP(olibochu_map)
+ MCFG_TIMER_ADD_SCANLINE("scantimer", olibochu_scanline, "screen", 0, 1)
+
+ MCFG_CPU_ADD("audiocpu", Z80, 4000000) /* 4 MHz ?? */
+ MCFG_CPU_PROGRAM_MAP(olibochu_sound_map)
+ MCFG_CPU_PERIODIC_INT(irq0_line_hold,60) //???
+
+// MCFG_QUANTUM_PERFECT_CPU("maincpu")
+
+ MCFG_MACHINE_START(olibochu)
+ MCFG_MACHINE_RESET(olibochu)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
+ MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MCFG_SCREEN_SIZE(32*8, 32*8)
+ MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 1*8, 31*8-1)
+ MCFG_SCREEN_UPDATE(olibochu)
+
+ MCFG_GFXDECODE(olibochu)
+ MCFG_PALETTE_LENGTH(512)
+
+ MCFG_PALETTE_INIT(olibochu)
+ MCFG_VIDEO_START(olibochu)
+
+ /* sound hardware */
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+
+ MCFG_SOUND_ADD("aysnd", AY8910, 2000000)
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+MACHINE_CONFIG_END
+
+
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+
+ROM_START( olibochu )
+ ROM_REGION( 0x10000, "maincpu", 0 ) /* main CPU */
+ ROM_LOAD( "1b.3n", 0x0000, 0x1000, CRC(bf17f4f4) SHA1(1075456f4b70a68548e0e1b6271fd4b845a77ce4) )
+ ROM_LOAD( "2b.3lm", 0x1000, 0x1000, CRC(63833b0d) SHA1(0135c449c92470241d03a87709c739209139d660) )
+ ROM_LOAD( "3b.3k", 0x2000, 0x1000, CRC(a4038e8b) SHA1(d7dce830239c8975ac135b213a99eec0c20ec3e2) )
+ ROM_LOAD( "4b.3j", 0x3000, 0x1000, CRC(aad4bec4) SHA1(9203564ac841a8de2f9b8183d4086acce95e3d47) )
+ ROM_LOAD( "5b.3h", 0x4000, 0x1000, CRC(66efa79f) SHA1(535369d958461834435d3202cd7310ecd0aa528c) )
+ ROM_LOAD( "6b.3f", 0x5000, 0x1000, CRC(1123d1ef) SHA1(6094e732e61915c45b14acd90c1343f05385daf4) )
+ ROM_LOAD( "7c.3e", 0x6000, 0x1000, CRC(89c26fb4) SHA1(ebc51e40612af894b20bd7fc3a5179cd35aaac9b) )
+ ROM_LOAD( "8b.3d", 0x7000, 0x1000, CRC(af19e5a5) SHA1(5a55bbee5b2f20e2988171a310c8293dabbd9a72) )
+
+ ROM_REGION( 0x10000, "audiocpu", 0 ) /* sound CPU */
+ ROM_LOAD( "17.4j", 0x0000, 0x1000, CRC(57f07402) SHA1(a763a835ac512c69b4351c1ec72b0a64e46203aa) )
+ ROM_LOAD( "18.4l", 0x1000, 0x1000, CRC(0a903e9c) SHA1(d893c2f5373f748d8bebf3673b15014f4a8d4b5c) )
+
+ ROM_REGION( 0x2000, "samples", 0 ) /* samples? */
+ ROM_LOAD( "15.1k", 0x0000, 0x1000, CRC(fb5dd281) SHA1(fba947ae7b619c2559b5af69ef02acfb15733f0d) )
+ ROM_LOAD( "16.1m", 0x1000, 0x1000, CRC(c07614a5) SHA1(d13d271a324f99d008429c16193c4504e5894493) )
+
+ ROM_REGION( 0x2000, "gfx1", 0 )
+ ROM_LOAD( "13.6n", 0x0000, 0x1000, CRC(b4fcf9af) SHA1(b360daa0670160dca61512823c98bc37ad99b9cf) )
+ ROM_LOAD( "14.4n", 0x1000, 0x1000, CRC(af54407e) SHA1(1883928b721e03e452fd0c626c403dc374b02ed7) )
+
+ ROM_REGION( 0x4000, "gfx2", 0 )
+ ROM_LOAD( "9.6a", 0x0000, 0x1000, CRC(fa69e16e) SHA1(5a493a0a108b3e496884d1f499f3445d4e241ecd) )
+ ROM_LOAD( "10.2a", 0x1000, 0x1000, CRC(10359f84) SHA1(df55f06fd98233d0efbc30e3e24bf9b8cab1a5cc) )
+ ROM_LOAD( "11.4a", 0x2000, 0x1000, CRC(1d968f5f) SHA1(4acf78d865ca36355bb15dc1d476f5e97a5d91b7) )
+ ROM_LOAD( "12.2a", 0x3000, 0x1000, CRC(d8f0c157) SHA1(a7b0c873e016c3b3252c2c9b6400b0fd3d650b2f) )
+
+ ROM_REGION( 0x0220, "proms", 0 )
+ ROM_LOAD( "c-1", 0x0000, 0x0020, CRC(e488e831) SHA1(6264741f7091c614093ae1ea4f6ead3d0cef83d3) ) /* palette */
+ ROM_LOAD( "c-2", 0x0020, 0x0100, CRC(698a3ba0) SHA1(3c1a6cb881ef74647c651462a27d812234408e45) ) /* sprite lookup table */
+ ROM_LOAD( "c-3", 0x0120, 0x0100, CRC(efc4e408) SHA1(f0796426cf324791853aa2ae6d0c3d1f8108d5c2) ) /* char lookup table */
+ROM_END
+
+
+
+GAME( 1981, olibochu, 0, olibochu, olibochu, 0, ROT270, "Irem / GDI", "Oli-Boo-Chu", GAME_WRONG_COLORS | GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )