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Diffstat (limited to 'src/mame/drivers/gunbustr.c')
-rw-r--r--src/mame/drivers/gunbustr.c451
1 files changed, 451 insertions, 0 deletions
diff --git a/src/mame/drivers/gunbustr.c b/src/mame/drivers/gunbustr.c
new file mode 100644
index 00000000000..8a5239ca45c
--- /dev/null
+++ b/src/mame/drivers/gunbustr.c
@@ -0,0 +1,451 @@
+/****************************************************************************
+
+ Gunbuster (c) 1992 Taito
+
+ Driver by Bryan McPhail & David Graves.
+
+ Board Info:
+
+ CPU : 68EC020 68000
+ SOUND : Ensoniq
+ OSC. : 40.000MHz 16.000MHz 30.47618MHz
+
+ * This board (K11J0717A) uses following chips:
+ - TC0470LIN
+ - TC0480SCP
+ - TC0570SPC
+ - TC0260DAR
+ - TC0510NIO
+
+ Gunbuster uses a slightly enhanced sprite system from the one
+ in Taito Z games.
+
+ The key feature remains the use of a sprite map rom which allows
+ the sprite hardware to create many large zoomed sprites on screen
+ while minimizing the main cpu load.
+
+ This feature makes the SZ system complementary to the F3 system
+ which, owing to its F2 sprite hardware, is not very well suited to
+ 3d games. (Taito abandoned the SZ system once better 3d hardware
+ platforms were available in the mid 1990s.)
+
+ Gunbuster also uses the TC0480SCP tilemap chip (like the last Taito
+ Z game, Double Axle).
+
+ Todo:
+
+ FLIPX support in taitoic.c is not quite correct - the Taito logo is wrong,
+ and the floor in the Doom levels has horizontal scrolling where it shouldn't.
+
+ No networked machine support
+
+ Coin lockout not working (see gunbustr_input_w): perhaps this
+ was a prototype version without proper coin handling?
+
+***************************************************************************/
+
+#include "driver.h"
+#include "cpu/m68000/m68000.h"
+#include "video/taitoic.h"
+#include "audio/taitosnd.h"
+#include "machine/eeprom.h"
+#include "sound/es5506.h"
+#include "includes/taito_f3.h"
+#include "audio/taito_en.h"
+
+
+VIDEO_START( gunbustr );
+VIDEO_UPDATE( gunbustr );
+
+static UINT16 coin_word;
+static UINT32 *gunbustr_ram;
+
+/*********************************************************************/
+
+static TIMER_CALLBACK( gunbustr_interrupt5 )
+{
+ cpunum_set_input_line(0,5,HOLD_LINE);
+}
+
+static INTERRUPT_GEN( gunbustr_interrupt )
+{
+ timer_set(ATTOTIME_IN_CYCLES(200000-500,0),0, gunbustr_interrupt5);
+ cpunum_set_input_line(0, 4, HOLD_LINE);
+}
+
+static WRITE32_HANDLER( gunbustr_palette_w )
+{
+ int a;
+ COMBINE_DATA(&paletteram32[offset]);
+
+ a = paletteram32[offset] >> 16;
+ palette_set_color_rgb(Machine,offset*2,pal5bit(a >> 10),pal5bit(a >> 5),pal5bit(a >> 0));
+
+ a = paletteram32[offset] &0xffff;
+ palette_set_color_rgb(Machine,offset*2+1,pal5bit(a >> 10),pal5bit(a >> 5),pal5bit(a >> 0));
+}
+
+static READ32_HANDLER( gunbustr_input_r )
+{
+ switch (offset)
+ {
+ case 0x00:
+ {
+ return (input_port_0_word_r(0,0) << 16) | input_port_1_word_r(0,0) |
+ (EEPROM_read_bit() << 7);
+ }
+
+ case 0x01:
+ {
+ return input_port_2_word_r(0,0) | (coin_word << 16);
+ }
+ }
+logerror("CPU #0 PC %06x: read input %06x\n",activecpu_get_pc(),offset);
+
+ return 0x0;
+}
+
+static WRITE32_HANDLER( gunbustr_input_w )
+{
+
+#if 0
+{
+char t[64];
+static UINT32 mem[2];
+COMBINE_DATA(&mem[offset]);
+
+sprintf(t,"%08x %08x",mem[0],mem[1]);
+popmessage(t);
+}
+#endif
+
+ switch (offset)
+ {
+ case 0x00:
+ {
+ if (ACCESSING_MSB32) /* $400000 is watchdog */
+ {
+ watchdog_reset_w(0,data >> 24);
+ }
+
+ if (ACCESSING_LSB32)
+ {
+ EEPROM_set_clock_line((data & 0x20) ? ASSERT_LINE : CLEAR_LINE);
+ EEPROM_write_bit(data & 0x40);
+ EEPROM_set_cs_line((data & 0x10) ? CLEAR_LINE : ASSERT_LINE);
+ return;
+ }
+ return;
+ }
+
+ case 0x01:
+ {
+ if (ACCESSING_MSB32)
+ {
+ /* game does not write a separate counter for coin 2!
+ It should disable both coins when 9 credits reached
+ see code $1d8a-f6... but for some reason it's not */
+ coin_lockout_w(0, data & 0x01000000);
+ coin_lockout_w(1, data & 0x02000000);
+ coin_counter_w(0, data & 0x04000000);
+ coin_counter_w(1, data & 0x04000000);
+ coin_word = (data >> 16) &0xffff;
+ }
+//logerror("CPU #0 PC %06x: write input %06x\n",activecpu_get_pc(),offset);
+ }
+ }
+}
+
+static WRITE32_HANDLER( motor_control_w )
+{
+/*
+ Standard value poked into MSW is 0x3c00
+ (0x2000 and zero are written at startup)
+
+ Three bits are written in test mode to test
+ lamps and motors:
+
+ ......x. ........ Hit motor
+ .......x ........ Solenoid
+ ........ .....x.. Hit lamp
+*/
+}
+
+
+static READ32_HANDLER( gunbustr_gun_r )
+{
+ return ( input_port_3_word_r(0,0) << 24) | (input_port_4_word_r(0,0) << 16) |
+ ( input_port_5_word_r(0,0) << 8) | input_port_6_word_r(0,0);
+}
+
+static WRITE32_HANDLER( gunbustr_gun_w )
+{
+ /* 10000 cycle delay is arbitrary */
+ timer_set(ATTOTIME_IN_CYCLES(10000,0),0, gunbustr_interrupt5);
+}
+
+
+/***********************************************************
+ MEMORY STRUCTURES
+***********************************************************/
+
+static ADDRESS_MAP_START( gunbustr_readmem, ADDRESS_SPACE_PROGRAM, 32 )
+ AM_RANGE(0x000000, 0x0fffff) AM_READ(MRA32_ROM)
+ AM_RANGE(0x200000, 0x21ffff) AM_READ(MRA32_RAM) /* main CPUA ram */
+ AM_RANGE(0x300000, 0x301fff) AM_READ(MRA32_RAM) /* Sprite ram */
+ AM_RANGE(0x390000, 0x3907ff) AM_READ(MRA32_RAM) /* Sound shared ram */
+ AM_RANGE(0x400000, 0x400007) AM_READ(gunbustr_input_r)
+ AM_RANGE(0x500000, 0x500003) AM_READ(gunbustr_gun_r) /* gun coord read */
+ AM_RANGE(0x800000, 0x80ffff) AM_READ(TC0480SCP_long_r)
+ AM_RANGE(0x830000, 0x83002f) AM_READ(TC0480SCP_ctrl_long_r)
+ AM_RANGE(0x900000, 0x901fff) AM_READ(MRA32_RAM) /* Palette ram */
+ AM_RANGE(0xc00000, 0xc03fff) AM_READ(MRA32_RAM) /* network ram ?? */
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( gunbustr_writemem, ADDRESS_SPACE_PROGRAM, 32 )
+ AM_RANGE(0x000000, 0x0fffff) AM_WRITE(MWA32_ROM)
+ AM_RANGE(0x200000, 0x21ffff) AM_WRITE(MWA32_RAM) AM_BASE(&gunbustr_ram)
+ AM_RANGE(0x300000, 0x301fff) AM_WRITE(MWA32_RAM) AM_BASE(&spriteram32) AM_SIZE(&spriteram_size)
+ AM_RANGE(0x380000, 0x380003) AM_WRITE(motor_control_w) /* motor, lamps etc. */
+ AM_RANGE(0x390000, 0x3907ff) AM_WRITE(MWA32_RAM) AM_BASE(&f3_shared_ram)
+ AM_RANGE(0x400000, 0x400007) AM_WRITE(gunbustr_input_w) /* eerom etc. */
+ AM_RANGE(0x500000, 0x500003) AM_WRITE(gunbustr_gun_w) /* gun int request */
+ AM_RANGE(0x800000, 0x80ffff) AM_WRITE(TC0480SCP_long_w)
+ AM_RANGE(0x830000, 0x83002f) AM_WRITE(TC0480SCP_ctrl_long_w)
+ AM_RANGE(0x900000, 0x901fff) AM_WRITE(gunbustr_palette_w) AM_BASE(&paletteram32)
+ AM_RANGE(0xc00000, 0xc03fff) AM_WRITE(MWA32_RAM) /* network ram ?? */
+ADDRESS_MAP_END
+
+/***********************************************************
+ INPUT PORTS (dips in eprom)
+***********************************************************/
+
+static INPUT_PORTS_START( gunbustr )
+ PORT_START /* IN0 */
+ PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
+ PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ PORT_START /* IN1 */
+ PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_PLAYER(1) /* Freeze input */
+ PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0080, IP_ACTIVE_HIGH, IPT_SPECIAL ) /* reserved for EEROM */
+ PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
+ PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
+ PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
+ PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
+ PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
+
+ PORT_START /* IN2 */
+ PORT_BIT(0x0001, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME( DEF_STR( Service_Mode )) PORT_CODE(KEYCODE_F2)
+ PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_SERVICE1 )
+ PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_COIN1 )
+ PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_COIN2 )
+ PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
+ /* Light gun inputs */
+
+ PORT_START /* IN 3, P1X */
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_PLAYER(1)
+
+ PORT_START /* IN 4, P1Y */
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_REVERSE PORT_PLAYER(1)
+
+ PORT_START /* IN 5, P2X */
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_PLAYER(2)
+
+ PORT_START /* IN 6, P2Y */
+ PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_REVERSE PORT_PLAYER(2)
+INPUT_PORTS_END
+
+
+/***********************************************************
+ GFX DECODING
+**********************************************************/
+
+static const gfx_layout tile16x16_layout =
+{
+ 16,16, /* 16*16 sprites */
+ RGN_FRAC(1,1),
+ 4, /* 4 bits per pixel */
+ { 0, 8, 16, 24 },
+ { 32, 33, 34, 35, 36, 37, 38, 39, 0, 1, 2, 3, 4, 5, 6, 7 },
+ { 0*64, 1*64, 2*64, 3*64, 4*64, 5*64, 6*64, 7*64,
+ 8*64, 9*64, 10*64, 11*64, 12*64, 13*64, 14*64, 15*64 },
+ 64*16 /* every sprite takes 128 consecutive bytes */
+};
+
+static const gfx_layout charlayout =
+{
+ 16,16, /* 16*16 characters */
+ RGN_FRAC(1,1),
+ 4, /* 4 bits per pixel */
+ { 0, 1, 2, 3 },
+ { 1*4, 0*4, 5*4, 4*4, 3*4, 2*4, 7*4, 6*4, 9*4, 8*4, 13*4, 12*4, 11*4, 10*4, 15*4, 14*4 },
+ { 0*64, 1*64, 2*64, 3*64, 4*64, 5*64, 6*64, 7*64, 8*64, 9*64, 10*64, 11*64, 12*64, 13*64, 14*64, 15*64 },
+ 128*8 /* every sprite takes 128 consecutive bytes */
+};
+
+static GFXDECODE_START( gunbustr )
+ GFXDECODE_ENTRY( REGION_GFX2, 0x0, tile16x16_layout, 0, 512 )
+ GFXDECODE_ENTRY( REGION_GFX1, 0x0, charlayout, 0, 512 )
+GFXDECODE_END
+
+
+/***********************************************************
+ MACHINE DRIVERS
+***********************************************************/
+
+static MACHINE_RESET( gunbustr )
+{
+ taito_f3_soundsystem_reset();
+
+ f3_68681_reset();
+}
+
+
+static UINT8 default_eeprom[128]={
+ 0x00,0x01,0x00,0x85,0x00,0xfd,0x00,0xff,0x00,0x67,0x00,0x02,0x00,0x00,0x00,0x7b,
+ 0x00,0xff,0x00,0xff,0x00,0x78,0x00,0x03,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+ 0x01,0x01,0x00,0x00,0x01,0x02,0x00,0x00,0x01,0x01,0x00,0x00,0x00,0x10,0x00,0x00,
+ 0x21,0x13,0x14,0x00,0x00,0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff
+};
+
+static struct EEPROM_interface gunbustr_eeprom_interface =
+{
+ 6, /* address bits */
+ 16, /* data bits */
+ "0110", /* read command */
+ "0101", /* write command */
+ "0111", /* erase command */
+ "0100000000", /* unlock command */
+ "0100110000", /* lock command */
+};
+
+static NVRAM_HANDLER( gunbustr )
+{
+ if (read_or_write)
+ EEPROM_save(file);
+ else {
+ EEPROM_init(&gunbustr_eeprom_interface);
+ if (file)
+ EEPROM_load(file);
+ else
+ EEPROM_set_data(default_eeprom,128); /* Default the gun setup values */
+ }
+}
+
+static MACHINE_DRIVER_START( gunbustr )
+
+ /* basic machine hardware */
+ MDRV_CPU_ADD(M68EC020, 16000000) /* 16 MHz */
+ MDRV_CPU_PROGRAM_MAP(gunbustr_readmem,gunbustr_writemem)
+ MDRV_CPU_VBLANK_INT(gunbustr_interrupt,1) /* VBL */
+
+ TAITO_F3_SOUND_SYSTEM_CPU(16000000)
+
+ MDRV_SCREEN_REFRESH_RATE(60)
+ MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)
+
+ MDRV_MACHINE_RESET(gunbustr)
+ MDRV_NVRAM_HANDLER(gunbustr)
+
+ /* video hardware */
+ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
+ MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MDRV_SCREEN_SIZE(40*8, 32*8)
+ MDRV_SCREEN_VISIBLE_AREA(0, 40*8-1, 2*8, 32*8-1)
+ MDRV_GFXDECODE(gunbustr)
+ MDRV_PALETTE_LENGTH(8192)
+
+ MDRV_VIDEO_START(gunbustr)
+ MDRV_VIDEO_UPDATE(gunbustr)
+
+ /* sound hardware */
+ TAITO_F3_SOUND_SYSTEM_ES5505(30476100/2)
+MACHINE_DRIVER_END
+
+/***************************************************************************/
+
+ROM_START( gunbustr )
+ ROM_REGION( 0x100000, REGION_CPU1, 0 ) /* 1024K for 68020 code (CPU A) */
+ ROM_LOAD32_BYTE( "d27-23.bin", 0x00000, 0x40000, CRC(cd1037cc) SHA1(8005a6a84081ce609e7a605ec8e00e740bfc6846) )
+ ROM_LOAD32_BYTE( "d27-22.bin", 0x00001, 0x40000, CRC(475949fc) SHA1(3d5aa3411d2618004902f9d05dff61d9af01ff35) )
+ ROM_LOAD32_BYTE( "d27-21.bin", 0x00002, 0x40000, CRC(60950a8a) SHA1(a0336bf6970baa6eaa998a112db840a7fd0452d7) )
+ ROM_LOAD32_BYTE( "d27-20.bin", 0x00003, 0x40000, CRC(13735c60) SHA1(65b762b28d51b295f6fe190420af566b1b3d4a82) )
+
+ ROM_REGION( 0x140000, REGION_CPU2, 0 ) /* Sound cpu */
+ ROM_LOAD16_BYTE( "d27-25.bin", 0x100000, 0x20000, CRC(c88203cf) SHA1(a918d395b471acdce56dacabd7a1e1e023948365) )
+ ROM_LOAD16_BYTE( "d27-24.bin", 0x100001, 0x20000, CRC(084bd8bd) SHA1(93229bc7de4550ead1bb12f666ddbacbe357488d) )
+
+ ROM_REGION( 0x100000, REGION_GFX1, ROMREGION_DISPOSE )
+ ROM_LOAD16_BYTE( "d27-01.bin", 0x00000, 0x80000, CRC(f41759ce) SHA1(30789f43dd09b56399e1dfdb8c6a1e01a21562bd) ) /* SCR 16x16 tiles */
+ ROM_LOAD16_BYTE( "d27-02.bin", 0x00001, 0x80000, CRC(92ab6430) SHA1(28ed80391c732b09d10c74ed6b78ac76cb62e083) )
+
+ ROM_REGION( 0x400000, REGION_GFX2, ROMREGION_DISPOSE )
+ ROM_LOAD32_BYTE( "d27-04.bin", 0x000003, 0x100000, CRC(ff8b9234) SHA1(6095b7daf9b7e9a22b0d44d9d6a642ddecb2bd29) ) /* OBJ 16x16 tiles: each rom has 1 bitplane */
+ ROM_LOAD32_BYTE( "d27-05.bin", 0x000002, 0x100000, CRC(96d7c1a5) SHA1(93b6a7aea397280a5a778e736d433a85cb7da52c) )
+ ROM_LOAD32_BYTE( "d27-06.bin", 0x000001, 0x100000, CRC(bbb934db) SHA1(9e9b5cf05b9275f1182f5b499b8ee897c4f25b96) )
+ ROM_LOAD32_BYTE( "d27-07.bin", 0x000000, 0x100000, CRC(8ab4854e) SHA1(bd2750cdaa2918e56f8aef3732875952a1eeafea) )
+
+ ROM_REGION16_LE( 0x80000, REGION_USER1, 0 )
+ ROM_LOAD16_WORD( "d27-03.bin", 0x00000, 0x80000, CRC(23bf2000) SHA1(49b29e771a47fcd7e6cd4e2704b217f9727f8299) ) /* STY, used to create big sprites on the fly */
+
+ ROM_REGION16_BE( 0x800000, REGION_SOUND1 , ROMREGION_ERASE00 )
+ ROM_LOAD16_BYTE( "d27-08.bin", 0x000000, 0x100000, CRC(7c147e30) SHA1(b605045154967050ec06391798da4afe3686a6e1) ) // C8, C9
+ ROM_RELOAD(0x400000,0x100000)
+ ROM_LOAD16_BYTE( "d27-09.bin", 0x200000, 0x100000, CRC(3e060304) SHA1(c4da4a94c168c3a454409d758c3ed45babbab170) ) // CA, CB
+ ROM_LOAD16_BYTE( "d27-10.bin", 0x600000, 0x100000, CRC(ed894fe1) SHA1(5bf2fb6abdcf25bc525a2c3b29dbf7aca0b18fea) ) // -std-
+ROM_END
+
+static READ32_HANDLER( main_cycle_r )
+{
+ if (activecpu_get_pc()==0x55a && (gunbustr_ram[0x3acc/4]&0xff000000)==0)
+ cpu_spinuntil_int();
+
+ return gunbustr_ram[0x3acc/4];
+}
+
+static DRIVER_INIT( gunbustr )
+{
+ /* Speedup handler */
+ memory_install_read32_handler(0, ADDRESS_SPACE_PROGRAM, 0x203acc, 0x203acf, 0, 0, main_cycle_r);
+}
+
+GAME( 1992, gunbustr, 0, gunbustr, gunbustr, gunbustr, ORIENTATION_FLIP_X, "Taito Corporation", "Gunbuster (Japan)", 0 )