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Diffstat (limited to 'src/mame/drivers/discoboy.c')
-rw-r--r--src/mame/drivers/discoboy.c569
1 files changed, 569 insertions, 0 deletions
diff --git a/src/mame/drivers/discoboy.c b/src/mame/drivers/discoboy.c
new file mode 100644
index 00000000000..64fe032ef5e
--- /dev/null
+++ b/src/mame/drivers/discoboy.c
@@ -0,0 +1,569 @@
+/*
+ Disco Boy
+
+Similar to mitchell.c / egghunt.c .. clearly derived from that hardware
+
+PCB Layout
+----------
+
+SOFT ART CO. 1993 NO - 1021
+PROGRAM NO-93-01-14-0024
++------------------------------------------+
+| YM3014 YM3812 10MHz 5.u94 |
+| 6116 6.u124 |
+| 1.u45 7.u95 |
+| M5205 2.u28 8.u125 |
+|J Z8400B 6116|
+|A 6116 6116 TPC1020AFN |
+|M 6116 6116|
+|M DSW2 |
+|A DSW1 6264 |
+| 6264 u80 u81 |
+|12MHz u2 u50 u5 |
+| u18 u78 u79 |
+| Z0840004PSC u46 u49 |
++------------------------------------------+
+
+Notes:
+ Zilog Z0840004PSC (Z80 cpu, main program CPU)
+ Goldstar Z8400B PS (Z80 cpu, sound CPU)
+ Yamaha YM3014/YM3812 (rebadged as 83142/5A12)
+ OKI M5205
+ TI TPC1020AFN-084C
+ 10.000MHz & 12.000MHz OSCs
+
+*/
+
+
+#include "driver.h"
+#include "sound/msm5205.h"
+#include "sound/3812intf.h"
+
+static UINT8* discoboy_ram_part1;
+static UINT8* discoboy_ram_part2;
+static UINT8* discoboy_ram_part3;
+static UINT8* discoboy_ram_part4;
+static UINT8* discoboy_ram_att;
+
+static UINT8 discoboy_ram_bank;
+static UINT8 port_00;
+static UINT8 discoboy_gfxbank;
+
+static VIDEO_START( discoboy )
+{
+}
+
+static void draw_sprites(running_machine *machine, mame_bitmap *bitmap,const rectangle *cliprect)
+{
+ int flipscreen = 0;
+ int offs,sx,sy;
+
+ for (offs = 0x1000-0x40;offs >= 0;offs -= 0x20)
+ {
+ int code = discoboy_ram_part4[offs];
+ int attr = discoboy_ram_part4[offs+1];
+ int color = attr & 0x0f;
+ sx = discoboy_ram_part4[offs+3] + ((attr & 0x10) << 4);
+ sy = ((discoboy_ram_part4[offs+2] + 8) & 0xff) - 8;
+ code += (attr & 0xe0) << 3;
+
+ if (code>=0x400)
+ {
+ if ((discoboy_gfxbank&0x30) == 0x00)
+ {
+ code = 0x400 + (code & 0x3ff);
+ }
+ else if ((discoboy_gfxbank&0x30) == 0x10)
+ {
+ code = 0x400 + (code & 0x3ff) + 0x400;
+ }
+ else if ((discoboy_gfxbank&0x30) == 0x20)
+ {
+ code = 0x400 + (code & 0x3ff) + 0x800;
+ }
+ else if ((discoboy_gfxbank&0x30) == 0x30)
+ {
+ code = 0x400 + (code & 0x3ff) + 0xc00;
+ }
+ else
+ {
+ code = mame_rand(machine);
+ }
+ }
+
+ drawgfx(bitmap,machine->gfx[0],
+ code,
+ color,
+ flipscreen,0,
+ sx,sy,
+ cliprect,TRANSPARENCY_PEN,15);
+ }
+}
+
+
+
+static VIDEO_UPDATE( discoboy )
+{
+ UINT16 x,y;
+ int i;
+ int count;
+ count = 0;
+
+ for (i=0;i<0x800;i+=2)
+ {
+ UINT16 pal;
+ int r,g,b;
+ pal = discoboy_ram_part1[i] | (discoboy_ram_part1[i+1] << 8);
+
+ b = ((pal >> 0) & 0xf) << 4;
+ g = ((pal >> 4) & 0xf) << 4;
+ r = ((pal >> 8) & 0xf) << 4;
+
+ palette_set_color(machine, i/2, MAKE_RGB(r, g, b));
+ }
+
+ for (i=0;i<0x800;i+=2)
+ {
+ UINT16 pal;
+ int r,g,b;
+ pal = discoboy_ram_part2[i] | (discoboy_ram_part2[i+1] << 8);
+
+ b = ((pal >> 0) & 0xf) << 4;
+ g = ((pal >> 4) & 0xf) << 4;
+ r = ((pal >> 8) & 0xf) << 4;
+
+ palette_set_color(machine, (i/2)+0x400, MAKE_RGB(r, g, b));
+ }
+
+ fillbitmap(bitmap, 0x3ff, cliprect);
+
+ for (y=0;y<32;y++)
+ {
+ for (x=0;x<64;x++)
+ {
+ UINT16 tileno = discoboy_ram_part3[count]|(discoboy_ram_part3[count+1]<<8);
+
+ if (tileno>0x2000)
+ {
+ if ((discoboy_gfxbank & 0x40) == 0x40)
+ tileno = 0x2000 + (tileno&0x1fff) + 0x2000;
+ else
+ tileno = 0x2000 + (tileno&0x1fff) + 0x0000;
+
+
+ }
+
+ drawgfx(bitmap,machine->gfx[1], tileno ,discoboy_ram_att[count/2],0,0,x*8,y*8,cliprect,TRANSPARENCY_NONE,0);
+ count+=2;
+ }
+ }
+
+ draw_sprites(machine,bitmap,cliprect);
+
+ return 0;
+}
+
+#ifdef UNUSED_FUNCTION
+void discoboy_setrombank(UINT8 data)
+{
+ UINT8 *ROM = memory_region(REGION_CPU1);
+ data &=0x2f;
+ memory_set_bankptr(1, &ROM[0x6000+(data*0x1000)] );
+}
+#endif
+
+static WRITE8_HANDLER( rambank_select_w )
+{
+ discoboy_ram_bank = data;
+ if (data&=0x83) logerror("rambank_select_w !!!!!");
+}
+
+static WRITE8_HANDLER( discoboy_port_00_w )
+{
+ if (data & 0xfe) logerror("unk discoboy_port_00_w %02x\n",data);
+ port_00 = data;
+}
+
+static WRITE8_HANDLER( discoboy_port_01_w )
+{
+ UINT8 *ROM = memory_region(REGION_CPU1);
+ int rombank;
+
+ // 00 10 20 30 during gameplay 1,2,3 other times?? title screen bit 0x40 toggle
+ //printf("unk discoboy_port_01_w %02x\n",data);
+ // discoboy gfxbank
+ discoboy_gfxbank = data&0xf0;
+ rombank = data&0x07;
+
+ memory_set_bankptr(1, &ROM[0x10000 + rombank * 0x4000] );
+}
+
+static WRITE8_HANDLER( discoboy_port_03_w ) // sfx? (to sound cpu)
+{
+// printf("unk discoboy_port_03_w %02x\n",data);
+// cpunum_set_input_line(1,INPUT_LINE_NMI,HOLD_LINE);
+ soundlatch_w(0,data);
+ cpunum_set_input_line(1,0,HOLD_LINE);
+}
+
+static WRITE8_HANDLER( discoboy_port_06_w )
+{
+ //printf("unk discoboy_port_06_w %02x\n",data);
+ if (data!=0) logerror("port 06!!!! %02x\n",data);
+}
+
+
+static WRITE8_HANDLER( rambank_w )
+{
+ if (discoboy_ram_bank&0x20)
+ {
+ discoboy_ram_part2[offset] = data;
+ }
+ else
+ {
+ discoboy_ram_part1[offset] = data;
+ }
+}
+
+static READ8_HANDLER( rambank_r )
+{
+ if (discoboy_ram_bank&0x20)
+ {
+ return discoboy_ram_part2[offset];
+ }
+ else
+ {
+ return discoboy_ram_part1[offset];
+ }
+}
+
+static READ8_HANDLER( rambank2_r )
+{
+ if (port_00 == 0x00)
+ {
+ return discoboy_ram_part3[offset];
+ }
+ else if (port_00 == 0x01)
+ {
+ return discoboy_ram_part4[offset];
+ }
+ else
+ {
+ printf( "unk rb2_r\n");
+ }
+
+ return mame_rand(Machine);
+}
+
+static WRITE8_HANDLER( rambank2_w )
+{
+
+ if (port_00 == 0x00)
+ {
+ discoboy_ram_part3[offset] = data;
+ }
+ else if (port_00 == 0x01)
+ {
+ discoboy_ram_part4[offset] = data;
+ }
+ else
+ {
+ printf( "unk rb2_w\n");
+ }
+}
+
+static READ8_HANDLER( discoboy_ram_att_r )
+{
+ return discoboy_ram_att[offset];
+}
+
+static WRITE8_HANDLER( discoboy_ram_att_w )
+{
+ discoboy_ram_att[offset] = data;
+}
+
+static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x7fff) AM_READ(MRA8_ROM)
+ AM_RANGE(0x8000, 0xbfff) AM_READ(MRA8_BANK1)
+ AM_RANGE(0xc000, 0xc7ff) AM_READ(rambank_r)
+ AM_RANGE(0xc800, 0xcfff) AM_READ(discoboy_ram_att_r)
+ AM_RANGE(0xd000, 0xdfff) AM_READ(rambank2_r)
+ AM_RANGE(0xe000, 0xefff) AM_READ(MRA8_RAM)
+ AM_RANGE(0xf000, 0xffff) AM_READ(MRA8_RAM)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0xbfff) AM_WRITE(MWA8_ROM)
+ AM_RANGE(0xc000, 0xc7ff) AM_WRITE(rambank_w)
+ AM_RANGE(0xc800, 0xcfff) AM_WRITE(discoboy_ram_att_w)
+ AM_RANGE(0xd000, 0xdfff) AM_WRITE(rambank2_w)
+ AM_RANGE(0xe000, 0xefff) AM_WRITE(MWA8_RAM)
+ AM_RANGE(0xf000, 0xffff) AM_WRITE(MWA8_RAM)
+ADDRESS_MAP_END
+
+static READ8_HANDLER( discoboy_port_06_r )
+{
+ return 0x00;
+}
+
+static ADDRESS_MAP_START( readport, ADDRESS_SPACE_IO, 8 )
+ ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
+ AM_RANGE(0x00, 0x00) AM_READ(input_port_0_r) // DSWA
+ AM_RANGE(0x01, 0x01) AM_READ(input_port_1_r) // Coins
+ AM_RANGE(0x02, 0x02) AM_READ(input_port_2_r) // P1
+ AM_RANGE(0x03, 0x03) AM_READ(input_port_3_r) // P2
+ AM_RANGE(0x04, 0x04) AM_READ(input_port_4_r) // DSWB
+
+ AM_RANGE(0x06, 0x06) AM_READ(discoboy_port_06_r) // ???
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( writeport, ADDRESS_SPACE_IO, 8 )
+ ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
+ AM_RANGE(0x00, 0x00) AM_WRITE(discoboy_port_00_w)
+ AM_RANGE(0x01, 0x01) AM_WRITE(discoboy_port_01_w)
+ AM_RANGE(0x03, 0x03) AM_WRITE(discoboy_port_03_w)
+ AM_RANGE(0x06, 0x06) AM_WRITE(discoboy_port_06_w) // ?? unk
+
+ AM_RANGE(0x07, 0x07) AM_WRITE(rambank_select_w) // 0x20 is palette bank bit.. others?
+ADDRESS_MAP_END
+
+/* Sound */
+
+static int adpcm_data = 0x80;
+
+//static WRITE8_HANDLER( splash_adpcm_data_w ){
+// adpcm_data = data;
+//}
+
+static void splash_msm5205_int(int data)
+{
+ MSM5205_data_w(0,adpcm_data >> 4);
+// adpcm_data = (adpcm_data << 4) & 0xf0;
+}
+
+
+
+static ADDRESS_MAP_START( sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x7fff) AM_READ(MRA8_ROM)
+ AM_RANGE(0xf000, 0xf7ff) AM_READ(MRA8_RAM)
+ AM_RANGE(0xf800, 0xf800) AM_READ(soundlatch_r)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x7fff) AM_WRITE(MWA8_ROM)
+ AM_RANGE(0xf000, 0xf7ff) AM_WRITE(MWA8_RAM)
+ AM_RANGE(0xec00, 0xec00) AM_WRITE(YM3812_control_port_0_w)
+ AM_RANGE(0xec01, 0xec01) AM_WRITE(YM3812_write_port_0_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sound_readport, ADDRESS_SPACE_IO, 8 )
+ ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sound_writeport, ADDRESS_SPACE_IO, 8 )
+ ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
+ADDRESS_MAP_END
+
+
+
+static INPUT_PORTS_START( discoboy )
+ PORT_START /* DSWA */
+ PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SWA:6,7,8")
+ PORT_DIPSETTING( 0x00, DEF_STR( 4C_1C ) )
+ PORT_DIPSETTING( 0x01, DEF_STR( 3C_1C ) )
+ PORT_DIPSETTING( 0x03, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x07, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x02, DEF_STR( 2C_3C ) )
+ PORT_DIPSETTING( 0x06, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x05, DEF_STR( 1C_3C ) )
+ PORT_DIPSETTING( 0x04, DEF_STR( 1C_4C ) )
+ PORT_DIPNAME( 0x08, 0x08, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SWA:5")
+ PORT_DIPSETTING( 0x08, "Every 150000" )
+ PORT_DIPSETTING( 0x00, "Every 300000" )
+ PORT_DIPNAME( 0x10, 0x10, DEF_STR( Lives ) ) PORT_DIPLOCATION("SWA:4")
+ PORT_DIPSETTING( 0x10, "3" )
+ PORT_DIPSETTING( 0x00, "4" )
+ PORT_DIPNAME( 0x60, 0x60, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SWA:2,3")
+ PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )
+ PORT_DIPSETTING( 0x60, DEF_STR( Normal ) )
+ PORT_DIPSETTING( 0x40, DEF_STR( Hard ) )
+ PORT_DIPSETTING( 0x20, DEF_STR( Hardest ) )
+ PORT_SERVICE_DIPLOC( 0x80, IP_ACTIVE_LOW, "SWA:1" )
+
+ PORT_START
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN2 )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )
+
+ PORT_START /* IN1 */
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
+
+ PORT_START /* IN2 */
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
+
+ PORT_START /* DSWB */
+ PORT_DIPUNUSED_DIPLOC( 0x01, IP_ACTIVE_LOW, "SWB:8" )
+ PORT_DIPUNUSED_DIPLOC( 0x02, IP_ACTIVE_LOW, "SWB:7" )
+ PORT_DIPUNUSED_DIPLOC( 0x04, IP_ACTIVE_LOW, "SWB:6" )
+ PORT_DIPUNUSED_DIPLOC( 0x08, IP_ACTIVE_LOW, "SWB:5" )
+ PORT_DIPUNUSED_DIPLOC( 0x10, IP_ACTIVE_LOW, "SWB:4" )
+ PORT_DIPUNUSED_DIPLOC( 0x20, IP_ACTIVE_LOW, "SWB:3" )
+ PORT_DIPUNUSED_DIPLOC( 0x40, IP_ACTIVE_LOW, "SWB:2" )
+ PORT_DIPNAME( 0x80, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SWB:1")
+ PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+INPUT_PORTS_END
+
+
+static const gfx_layout tiles8x8_layout =
+{
+ 16,16,
+ RGN_FRAC(1,2),
+ 4,
+ { RGN_FRAC(1,2)+4,RGN_FRAC(1,2), RGN_FRAC(0,2)+4,RGN_FRAC(0,2) },
+ { 0, 1, 2, 3, 8, 9, 10, 11, 256, 257, 258, 259, 264,265,266,267 },
+ { 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 },
+ 16*32
+};
+
+static const gfx_layout tiles8x8_layout2 =
+{
+ 8,8,
+ RGN_FRAC(1,4),
+ 4,
+ { RGN_FRAC(1,4), RGN_FRAC(0,4),RGN_FRAC(3,4),RGN_FRAC(2,4) },
+ { 0, 1, 2, 3, 4, 5, 6, 7 },
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
+ 8*8
+};
+
+static GFXDECODE_START( discoboy )
+ GFXDECODE_ENTRY( REGION_GFX1, 0, tiles8x8_layout, 0x000, 128 )
+ GFXDECODE_ENTRY( REGION_GFX2, 0, tiles8x8_layout2, 0x000, 128 )
+
+GFXDECODE_END
+
+
+
+static struct MSM5205interface discoboy_msm5205_interface =
+{
+ splash_msm5205_int, /* IRQ handler */
+ MSM5205_S48_4B /* ??? unknown hz */
+};
+
+
+static MACHINE_DRIVER_START( discoboy )
+ /* basic machine hardware */
+ MDRV_CPU_ADD(Z80,12000000/2) /* 6 MHz? */
+ MDRV_CPU_PROGRAM_MAP(readmem,writemem)
+ MDRV_CPU_IO_MAP(readport,writeport)
+ MDRV_CPU_VBLANK_INT(irq0_line_hold,1)
+
+ MDRV_CPU_ADD(Z80,10000000/2) /* 5 MHz? */
+ MDRV_CPU_PROGRAM_MAP(sound_readmem,sound_writemem)
+ MDRV_CPU_IO_MAP(sound_readport,sound_writeport)
+// MDRV_CPU_VBLANK_INT(irq0_line_hold,1)
+ MDRV_CPU_VBLANK_INT(nmi_line_pulse,32)
+
+ /* video hardware */
+ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
+ MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MDRV_SCREEN_REFRESH_RATE(60)
+ MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)
+ MDRV_SCREEN_SIZE(512, 256)
+ MDRV_SCREEN_VISIBLE_AREA(8*8, 512-1-8*8, 0+8, 256-1-8)
+ MDRV_GFXDECODE(discoboy)
+ MDRV_PALETTE_LENGTH(0x1000)
+
+ MDRV_VIDEO_START(discoboy)
+ MDRV_VIDEO_UPDATE(discoboy)
+
+ /* sound hardware */
+ MDRV_SPEAKER_STANDARD_MONO("mono")
+
+ MDRV_SOUND_ADD(YM3812, 2500000)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.60)
+
+
+ MDRV_SOUND_ADD(MSM5205, 384000) // ???? unknown
+ MDRV_SOUND_CONFIG(discoboy_msm5205_interface)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
+
+MACHINE_DRIVER_END
+
+static DRIVER_INIT( discoboy )
+{
+ UINT8 *ROM = memory_region(REGION_CPU1);
+
+ discoboy_ram_part1 = auto_malloc(0x800);
+ discoboy_ram_part2 = auto_malloc(0x800);
+ discoboy_ram_att = auto_malloc(0x800);
+
+ discoboy_ram_part3 = auto_malloc(0x1000);
+ discoboy_ram_part4 = auto_malloc(0x1000);
+
+ memset(discoboy_ram_part1,0,0x800);
+ memset(discoboy_ram_part2,0,0x800);
+ memset(discoboy_ram_att,0,0x800);
+ memset(discoboy_ram_part3,0,0x1000);
+ memset(discoboy_ram_part4,0,0x1000);
+
+
+ state_save_register_global_pointer(discoboy_ram_part1, 0x800);
+ state_save_register_global_pointer(discoboy_ram_part2, 0x800);
+ state_save_register_global_pointer(discoboy_ram_att, 0x800);
+ state_save_register_global_pointer(discoboy_ram_part3, 0x1000);
+ state_save_register_global_pointer(discoboy_ram_part4, 0x1000);
+
+ discoboy_ram_bank = 0;
+
+ memory_set_bankptr(1, &ROM[0x10000] );
+}
+
+ROM_START( discoboy )
+ ROM_REGION( 0x30000, REGION_CPU1, 0 )
+ ROM_LOAD( "u2", 0x00000, 0x10000, CRC(44a4fefa) SHA1(29b74bb739afffb7baefb5ed4da09cdb1559b011) )
+ ROM_LOAD( "u18", 0x10000, 0x20000, CRC(88d1282d) SHA1(1f11dad0f577198c54a1dc182ba7502e398b998f) )
+
+ ROM_REGION( 0x20000, REGION_CPU2, 0 )
+ ROM_LOAD( "2.u28", 0x00000, 0x10000, CRC(7c2ed174) SHA1(ace209dc4cc7a4ffca062842defd84cefc5b10d2))
+ ROM_LOAD( "1.u45", 0x10000, 0x10000, CRC(c266c6df) SHA1(f76e38ded43f56a486cf6569c679ddb57a4165fb) )
+
+ ROM_REGION( 0x100000, REGION_GFX1, ROMREGION_INVERT )
+ ROM_LOAD( "5.u94", 0x00000, 0x10000, CRC(dbd20836) SHA1(d97651626b1dc16b93f8aed28bac19fd177e626f) )
+ ROM_LOAD( "6.u124", 0x10000, 0x40000, CRC(e20d41f8) SHA1(792294a34840867072bc484d6f3cae3502c8bc28) )
+ ROM_LOAD( "7.u95", 0x80000, 0x10000, CRC(1d5617a2) SHA1(6b6bd50c1984748dc8bf6600431d9bb6fe443873) )
+ ROM_LOAD( "8.u125", 0x90000, 0x40000, CRC(30be1340) SHA1(e4765b75c8f774c6f7f7b5496a50c33ee3950550) )
+
+ ROM_REGION( 0x100000, REGION_GFX2, ROMREGION_INVERT )
+ ROM_LOAD( "u80", 0x00000, 0x10000, CRC(4cc642ae) SHA1(2a59ebc8ab27bf7c3c1aa389ea32fb01d5cfdce8) )
+ ROM_LOAD( "u50", 0x10000, 0x20000, CRC(1557ca92) SHA1(5a0afbeede6f0ae1c75bdec446132c673aeb0fe7) )
+ ROM_LOAD( "u81", 0x40000, 0x10000, CRC(9e04274e) SHA1(70c28212b242335353e6dd48b7eb176146bec457) )
+ ROM_LOAD( "u5", 0x50000, 0x20000, CRC(a07df669) SHA1(7f09b2508b9bffed7a4cd191f707af3c0c2a1de2) )
+ ROM_LOAD( "u78", 0x80000, 0x10000, CRC(04571f70) SHA1(afdc7d84f7804c2ced413d13e6985a05f841e79e) )
+ ROM_LOAD( "u46", 0x90000, 0x20000, CRC(764ffde4) SHA1(637df403a6ac73456892add3f2403a92afb67f19) )
+ ROM_LOAD( "u79", 0xc0000, 0x10000, CRC(646f0f83) SHA1(d5cd050872d4b8c2fc89c3c0f434b1d66e5f1c59) )
+ ROM_LOAD( "u49", 0xd0000, 0x20000, CRC(0b6c0d8d) SHA1(820a12c84af4fd5a04e1eca3cbace0002d3024b6) )
+ROM_END
+
+
+GAME( 1993, discoboy, 0, discoboy, discoboy, discoboy, ROT270, "Soft Art Co.", "Disco Boy", 0 )