/*************************************************************************** Air Buster (C) 1990 Kaneko driver by Luca Elia (l.elia@tin.it) CPU : Z-80 x 3 SOUND : YM2203C M6295 OSC. : 12.000MHz 16.000MHz Interesting routines (main cpu) ------------------------------- fd-fe address of int: 0x38 (must alternate? see e600/1) ff-100 address of int: 0x16 66 print "sub cpu caused nmi" and die! 7 after tests 1497 print string following call: (char)*,0. program continues after 0. base addr = c300 + HL & 08ff, DE=xy , BC=dxdy +0<-(e61b) +100<-D +200<-E +300<-char +400<-(e61c) 1642 A<- buttons status (bits 0&1) Interesting locations (main cpu) -------------------------------- 2907 table of routines (f150 index = 1-3f, copied to e612) e60e<-address of routine, f150<-0. e60e is used until f150!=0 1: 2bf4 service mode next 2: 2d33 3: 16bd 4: 2dcb 5: 2fcf 6: 3262 7: 32b8 8: 335d> print gfx/color test page next 9: 33c0> handle the above page a: 29c6 b: 2a24 c: 16ce d: 3e7e> * e: 3ec5> print "Sub Cpu / Ram Error"; ** f: 3e17> print "Coin error"; ** 10: 3528> print (c) notice, not shown next 11: 3730> show (c) notice, wait 0x100 calls next 12: 9658 13: 97c3 14: a9fa 15: aa6e 16-19: 2985 1a: 9c2e 1b: 9ffa 1c: 29c6 1d: 2988> * 1e: a2c4 1f: a31a 20: a32f 21: a344 22: a359 23: a36e 24: a383 25: a398 26: a3ad 27: a3c2 28: a3d7 29: a3f1 2a: a40e 2b: a4e5 2c: a69d 2d: adb8 2e: ade9 2f: 2b8b 30: a823 31: 3d17> print "warm up, wait few mins. secs left: 00" next 32: 3dc0> pause (e624 counter).e626 next 33: 96b4 34: 97ad 35-3f: 3e7e> * * Print "Command Error [$xx]" where xx is last routine index (e612) ** ld (0000h),A (??) ; loop 3cd7 hiscores table (0x40 bytes, copied to e160) Try entering TERU as your name :) 7fff country code: 0 <-> Japan; else World e615 rank: 0-easy 1-normal 2-hard 3-hardest e624 sound code during sound test -- Shared RAM -- f148<- sound code (copied from e624) f14a-> read on nmi routine. main cpu writes the value and writes to port 02 f150<- index of table of routines at 2907 ---------------- Interesting routines (sub cpu) ------------------------------- 491 copy palette data d000<-f200(a0) d200<-f300(a0) d400<-f400(200) 61c f150<-A f151<-A (routine index of main cpu!) if dsw1-2 active, it does nothing (?!) c8c c000-c7ff<-0 c800-cfff<-0 f600<-f200(400) 1750 copies 10 lines of 20 bytes from 289e to f800 22cd copy 0x100 bytes 22cf copy 0x0FF bytes 238d copy 0x0A0 bytes Interesting locations (sub cpu) -------------------------------- fd-fe address of int: 0x36e (same as 38) ff-100 address of int: 0x4b0 -- Shared RAM -- f000 credits f001/d<-IN 24 (Service) f00e<- bank f002<- dsw1 (cpl'd) f003<- dsw2 (cpl'd) f004<- IN 20 (cpl'd) (player 1) f005<- IN 22 (cpl'd) (player 2) f006<- start lives: dsw-2 & 0x30 index; values: 3,4,5,7 (5da table) f007 current lives p1 f008 current lives p2 f009<- coin/credit 1: dsw-1 & 0x30 index; values: 11,12,21,23 (5de table) f00a<- coin 1 f00b<- coin/credit 2: dsw-1 & 0xc0 index; values: 11,12,21,23 (5e2 table) f00c<- coin 2 f00f ?? outa (28h) f010 written by sub cpu, bit 4 read by main cpu. bit 0 p1 playing bit 1 p2 playing f014 index (1-f) of routine called during int 36e (table at c3f) 1: 62b 2: 66a 3: 6ad 4: 79f 5: 7e0 6: 81b 7: 8a7 8: 8e9 9: b02 a: 0 b: 0 c: bfc d: c0d e: a6f f: ac3 f015 index of the routine to call, usually the one selected by f014 but sometimes written directly. Scroll registers: ports 04/06/08/0a/0c, written in sequence (101f) port 06 <- f100 + f140 x port 04 <- f104 + f142 y port 0a <- f120 + f140 x port 08 <- f124 + f142 y port 0c <- f14c = bit 0/1/2/3 = port 6/4/a/8 val < FF f148-> sound code (from main cpu) f14c scroll regs high bits ---------------- Interesting routines (sound cpu) ------------------------------- 50a 6295 521 6295 a96 2203 reg<-B val<-A Interesting locations (sound cpu) --------------------------------- c715 c716 pending sound command c760 rom bank To Do ----- - Is the sub cpu / sound cpu communication status port (0e) correct ? - Main cpu: port 01 ? - Sub cpu: port 0x38 ? Plus it can probably cause a nmi to main cpu - incomplete DSW's - Spriteram low 0x300 bytes (priority?) */ /* ** ** Main cpu data ** */ /* Runs in IM 2 fd-fe address of int: 0x38 ff-100 address of int: 0x16 */ /* ** ** Sub cpu data ** ** */ /* Runs in IM 2 fd-fe address of int: 0x36e (same as 0x38) ff-100 address of int: 0x4b0 (only writes to port 38h) */ /* Sub cpu and Sound cpu communicate bidirectionally: Sub cpu writes to soundlatch, reads from soundlatch2 Sound cpu writes to soundlatch2, reads from soundlatch Each latch raises a flag when it's been written. The flag is cleared when the latch is read. Code at 505: waits for bit 1 to go low, writes command, waits for bit 0 to go low, reads back value. Code at 3b2 waits bit 2 to go high (called during int fd) */ #include "driver.h" #include "cpu/z80/z80.h" #include "sound/2203intf.h" #include "sound/okim6295.h" #include "video/kan_pand.h" static UINT8 *devram; static int soundlatch_status, soundlatch2_status; extern UINT8 *airbustr_videoram2, *airbustr_colorram2; extern WRITE8_HANDLER( airbustr_videoram_w ); extern WRITE8_HANDLER( airbustr_colorram_w ); extern WRITE8_HANDLER( airbustr_videoram2_w ); extern WRITE8_HANDLER( airbustr_colorram2_w ); extern WRITE8_HANDLER( airbustr_scrollregs_w ); extern VIDEO_START( airbustr ); extern VIDEO_UPDATE( airbustr ); extern VIDEO_EOF( airbustr ); /* Read/Write Handlers */ static READ8_HANDLER( devram_r ) { // There's an MCU here, possibly switch (offset) { /* Reading efe0 probably resets a watchdog mechanism that would reset the main cpu. We avoid this and patch the rom instead (main cpu has to be reset once at startup) */ case 0xfe0: return watchdog_reset_r(0); /* Reading a word at eff2 probably yelds the product of the words written to eff0 and eff2 */ case 0xff2: case 0xff3: { int x = (devram[0xff0] + devram[0xff1] * 256) * (devram[0xff2] + devram[0xff3] * 256); if (offset == 0xff2) return (x & 0x00FF) >> 0; else return (x & 0xFF00) >> 8; } break; /* Reading eff4, F0 times must yield at most 80-1 consecutive equal values */ case 0xff4: return mame_rand(Machine); default: return devram[offset]; } } static WRITE8_HANDLER( master_nmi_trigger_w ) { cpunum_set_input_line(1, INPUT_LINE_NMI, PULSE_LINE); } static void airbustr_bankswitch(int cpunum, int data) { UINT8 *ROM = memory_region(REGION_CPU1 + cpunum); if ((data & 0x07) < 3) ROM = &ROM[0x4000 * (data & 0x07)]; else ROM = &ROM[0x10000 + 0x4000 * ((data & 0x07) - 3)]; memory_set_bankptr(cpunum + 1, ROM); } static WRITE8_HANDLER( master_bankswitch_w ) { airbustr_bankswitch(0, data); } static WRITE8_HANDLER( slave_bankswitch_w ) { airbustr_bankswitch(1, data); flip_screen_set(data & 0x10); // used at the end of levels, after defeating the boss, to leave trails pandora_set_clear_bitmap(data&0x20); } static WRITE8_HANDLER( sound_bankswitch_w ) { airbustr_bankswitch(2, data); } static READ8_HANDLER( soundcommand_status_r ) { // bits: 2 <-> ? 1 <-> soundlatch full 0 <-> soundlatch2 empty return 4 + soundlatch_status * 2 + (1 - soundlatch2_status); } static READ8_HANDLER( soundcommand_r ) { soundlatch_status = 0; // soundlatch has been read return soundlatch_r(0); } static READ8_HANDLER( soundcommand2_r ) { soundlatch2_status = 0; // soundlatch2 has been read return soundlatch2_r(0); } static WRITE8_HANDLER( soundcommand_w ) { soundlatch_w(0, data); soundlatch_status = 1; // soundlatch has been written cpunum_set_input_line(2, INPUT_LINE_NMI, PULSE_LINE); // cause a nmi to sub cpu } static WRITE8_HANDLER( soundcommand2_w ) { soundlatch2_w(0, data); soundlatch2_status = 1; // soundlatch2 has been written } static WRITE8_HANDLER( airbustr_paletteram_w ) { int val; /* ! byte 1 ! ! byte 0 ! */ /* xGGG GGRR RRRB BBBB */ /* x432 1043 2104 3210 */ paletteram[offset] = data; val = (paletteram[offset | 1] << 8) | paletteram[offset & ~1]; palette_set_color_rgb(Machine, offset/2, pal5bit(val >> 5), pal5bit(val >> 10), pal5bit(val >> 0)); } static WRITE8_HANDLER( airbustr_coin_counter_w ) { coin_counter_w(0, data & 1); coin_counter_w(1, data & 2); coin_lockout_w(0, ~data & 4); coin_lockout_w(1, ~data & 8); } /* Memory Maps */ static ADDRESS_MAP_START( master_map, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x0000, 0x7fff) AM_ROM AM_RANGE(0x8000, 0xbfff) AM_ROMBANK(1) AM_RANGE(0xc000, 0xcfff) AM_READWRITE(pandora_spriteram_r, pandora_spriteram_w) AM_RANGE(0xd000, 0xdfff) AM_RAM AM_RANGE(0xe000, 0xefff) AM_RAM AM_BASE(&devram) // shared with protection device AM_RANGE(0xf000, 0xffff) AM_RAM AM_SHARE(1) ADDRESS_MAP_END static ADDRESS_MAP_START( master_io_map, ADDRESS_SPACE_IO, 8 ) ADDRESS_MAP_FLAGS( AMEF_ABITS(8) ) AM_RANGE(0x00, 0x00) AM_WRITE(master_bankswitch_w) AM_RANGE(0x01, 0x01) AM_WRITENOP // ??? AM_RANGE(0x02, 0x02) AM_WRITE(master_nmi_trigger_w) ADDRESS_MAP_END static ADDRESS_MAP_START( slave_map, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x0000, 0x7fff) AM_ROM AM_RANGE(0x8000, 0xbfff) AM_ROMBANK(2) AM_RANGE(0xc000, 0xc3ff) AM_RAM AM_WRITE(airbustr_videoram2_w) AM_BASE(&airbustr_videoram2) AM_RANGE(0xc400, 0xc7ff) AM_RAM AM_WRITE(airbustr_colorram2_w) AM_BASE(&airbustr_colorram2) AM_RANGE(0xc800, 0xcbff) AM_RAM AM_WRITE(airbustr_videoram_w) AM_BASE(&videoram) AM_RANGE(0xcc00, 0xcfff) AM_RAM AM_WRITE(airbustr_colorram_w) AM_BASE(&colorram) AM_RANGE(0xd000, 0xd5ff) AM_RAM AM_WRITE(airbustr_paletteram_w) AM_BASE(&paletteram) AM_RANGE(0xd600, 0xdfff) AM_RAM AM_RANGE(0xe000, 0xefff) AM_RAM AM_RANGE(0xf000, 0xffff) AM_RAM AM_SHARE(1) ADDRESS_MAP_END static ADDRESS_MAP_START( slave_io_map, ADDRESS_SPACE_IO, 8 ) ADDRESS_MAP_FLAGS( AMEF_ABITS(8) ) AM_RANGE(0x00, 0x00) AM_WRITE(slave_bankswitch_w) AM_RANGE(0x02, 0x02) AM_READWRITE(soundcommand2_r, soundcommand_w) AM_RANGE(0x04, 0x0c) AM_WRITE(airbustr_scrollregs_w) AM_RANGE(0x0e, 0x0e) AM_READ(soundcommand_status_r) AM_RANGE(0x20, 0x20) AM_READ(input_port_0_r) AM_RANGE(0x22, 0x22) AM_READ(input_port_1_r) AM_RANGE(0x24, 0x24) AM_READ(input_port_2_r) AM_RANGE(0x28, 0x28) AM_WRITE(airbustr_coin_counter_w) AM_RANGE(0x38, 0x38) AM_WRITENOP // ??? ADDRESS_MAP_END static ADDRESS_MAP_START( sound_map, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x0000, 0x7fff) AM_ROM AM_RANGE(0x8000, 0xbfff) AM_ROMBANK(3) AM_RANGE(0xc000, 0xdfff) AM_RAM ADDRESS_MAP_END static ADDRESS_MAP_START( sound_io_map, ADDRESS_SPACE_IO, 8 ) ADDRESS_MAP_FLAGS( AMEF_ABITS(8) ) AM_RANGE(0x00, 0x00) AM_WRITE(sound_bankswitch_w) AM_RANGE(0x02, 0x02) AM_READWRITE(YM2203_status_port_0_r, YM2203_control_port_0_w) AM_RANGE(0x03, 0x03) AM_READWRITE(YM2203_read_port_0_r, YM2203_write_port_0_w) AM_RANGE(0x04, 0x04) AM_READWRITE(OKIM6295_status_0_r, OKIM6295_data_0_w) AM_RANGE(0x06, 0x06) AM_READWRITE(soundcommand_r, soundcommand2_w) ADDRESS_MAP_END /* Input Ports */ static INPUT_PORTS_START( airbustr ) PORT_START_TAG("IN0") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_START_TAG("IN1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_START_TAG("IN2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) // used PORT_START_TAG("DSW1") PORT_DIPUNUSED_DIPLOC( 0x01, IP_ACTIVE_LOW, "SW1:1" ) PORT_DIPNAME( 0x02, 0x02, DEF_STR( Flip_Screen ) ) PORT_DIPLOCATION("SW1:2") PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_SERVICE_DIPLOC( 0x04, IP_ACTIVE_LOW, "SW1:3" ) PORT_DIPNAME( 0x08, 0x08, "Coin Mode" ) PORT_DIPLOCATION("SW1:4") PORT_DIPSETTING( 0x08, "Mode 1" ) // routine at 0x056d: 11 21 12 16 (bit 3 active) PORT_DIPSETTING( 0x00, "Mode 2" ) // 11 21 13 14 (bit 3 not active) PORT_DIPNAME( 0x30, 0x30, DEF_STR( Coin_A ) ) PORT_DIPLOCATION("SW1:5,6") PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_NOTEQUALS, 0x00) PORT_DIPSETTING( 0x30, DEF_STR( 1C_1C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_NOTEQUALS, 0x00) PORT_DIPSETTING( 0x10, DEF_STR( 1C_2C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_NOTEQUALS, 0x00) PORT_DIPSETTING( 0x00, DEF_STR( 1C_6C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_NOTEQUALS, 0x00) PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_EQUALS, 0x00) PORT_DIPSETTING( 0x30, DEF_STR( 1C_1C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_EQUALS, 0x00) PORT_DIPSETTING( 0x10, DEF_STR( 1C_3C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_EQUALS, 0x00) PORT_DIPSETTING( 0x00, DEF_STR( 1C_4C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_EQUALS, 0x00) PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Coin_B ) ) PORT_DIPLOCATION("SW1:7,8") PORT_DIPSETTING( 0x80, DEF_STR( 2C_1C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_NOTEQUALS, 0x00) PORT_DIPSETTING( 0xc0, DEF_STR( 1C_1C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_NOTEQUALS, 0x00) PORT_DIPSETTING( 0x40, DEF_STR( 1C_2C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_NOTEQUALS, 0x00) PORT_DIPSETTING( 0x00, DEF_STR( 1C_6C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_NOTEQUALS, 0x00) PORT_DIPSETTING( 0x80, DEF_STR( 2C_1C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_EQUALS, 0x00) PORT_DIPSETTING( 0xc0, DEF_STR( 1C_1C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_EQUALS, 0x00) PORT_DIPSETTING( 0x40, DEF_STR( 1C_3C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_EQUALS, 0x00) PORT_DIPSETTING( 0x00, DEF_STR( 1C_4C ) ) PORT_CONDITION("DSW1", 0x08, PORTCOND_EQUALS, 0x00) PORT_START_TAG("DSW2") PORT_DIPNAME( 0x03, 0x03, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW2:1,2") PORT_DIPSETTING( 0x02, DEF_STR( Easy ) ) PORT_DIPSETTING( 0x03, DEF_STR( Normal ) ) PORT_DIPSETTING( 0x01, "Difficult" ) PORT_DIPSETTING( 0x00, "Very Difficult" ) PORT_DIPUNUSED_DIPLOC( 0x04, IP_ACTIVE_LOW, "SW2:3" ) PORT_DIPNAME( 0x08, 0x08, "Freeze" ) PORT_DIPLOCATION("SW2:4") PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x30, 0x30, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW2:5,6") PORT_DIPSETTING( 0x30, "3" ) PORT_DIPSETTING( 0x20, "4" ) PORT_DIPSETTING( 0x10, "5" ) PORT_DIPSETTING( 0x00, "7" ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SW2:7") PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) PORT_DIPSETTING( 0x40, DEF_STR( On ) ) PORT_DIPUNUSED_DIPLOC( 0x80, IP_ACTIVE_LOW, "SW2:8" ) INPUT_PORTS_END static INPUT_PORTS_START( airbustj ) PORT_INCLUDE(airbustr) PORT_MODIFY("DSW1") PORT_DIPUNUSED_DIPLOC( 0x08, IP_ACTIVE_LOW, "SW1:4" ) PORT_DIPNAME( 0x30, 0x30, DEF_STR( Coin_A ) ) PORT_DIPLOCATION("SW1:5,6") // routine at 0x0546 : 11 12 21 23 PORT_DIPSETTING( 0x10, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0x30, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x00, DEF_STR( 2C_3C ) ) PORT_DIPSETTING( 0x20, DEF_STR( 1C_2C ) ) PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Coin_B ) ) PORT_DIPLOCATION("SW1:7,8") PORT_DIPSETTING( 0x40, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0xc0, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x00, DEF_STR( 2C_3C ) ) PORT_DIPSETTING( 0x80, DEF_STR( 1C_2C ) ) INPUT_PORTS_END /* Graphics Layout */ static const gfx_layout tile_gfxlayout = { 16, 16, RGN_FRAC(1,1), 4, { 0, 1, 2, 3 }, { 1*4, 0*4, 3*4, 2*4, 5*4, 4*4, 7*4, 6*4, 1*4+32*8, 0*4+32*8, 3*4+32*8, 2*4+32*8, 5*4+32*8, 4*4+32*8, 7*4+32*8, 6*4+32*8 }, { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32, 0*32+64*8, 1*32+64*8, 2*32+64*8, 3*32+64*8, 4*32+64*8, 5*32+64*8, 6*32+64*8, 7*32+64*8 }, 16*16*4 }; static const gfx_layout sprite_gfxlayout = { 16, 16, RGN_FRAC(1,1), 4, { 0, 1, 2, 3 }, { 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4, 0*4+32*8, 1*4+32*8, 2*4+32*8, 3*4+32*8, 4*4+32*8, 5*4+32*8, 6*4+32*8, 7*4+32*8 }, { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32, 0*32+64*8, 1*32+64*8, 2*32+64*8, 3*32+64*8, 4*32+64*8, 5*32+64*8, 6*32+64*8, 7*32+64*8 }, 16*16*4 }; /* Graphics Decode Information */ static GFXDECODE_START( airbustr ) GFXDECODE_ENTRY( REGION_GFX1, 0, tile_gfxlayout, 0, 32 ) // tiles GFXDECODE_ENTRY( REGION_GFX2, 0, sprite_gfxlayout, 512, 16 ) // sprites GFXDECODE_END /* Sound Interfaces */ static struct YM2203interface ym2203_interface = { input_port_3_r, // DSW-1 connected to port A input_port_4_r // DSW-2 connected to port B }; /* Interrupt Generators */ static INTERRUPT_GEN( master_interrupt ) { static int addr = 0xff; addr ^= 0x02; cpunum_set_input_line_and_vector(0, 0, HOLD_LINE, addr); } static INTERRUPT_GEN( slave_interrupt ) { static int addr = 0xfd; addr ^= 0x02; cpunum_set_input_line_and_vector(1, 0, HOLD_LINE, addr); } /* Machine Initialization */ static MACHINE_RESET( airbustr ) { soundlatch_status = soundlatch2_status = 0; master_bankswitch_w(0, 0x02); slave_bankswitch_w(0, 0x02); sound_bankswitch_w(0, 0x02); } /* Machine Driver */ static MACHINE_DRIVER_START( airbustr ) // basic machine hardware MDRV_CPU_ADD(Z80, 6000000) // ??? MDRV_CPU_PROGRAM_MAP(master_map, 0) MDRV_CPU_IO_MAP(master_io_map, 0) MDRV_CPU_VBLANK_INT(master_interrupt, 2) // nmi caused by sub cpu?, ? MDRV_CPU_ADD(Z80, 6000000) // ??? MDRV_CPU_PROGRAM_MAP(slave_map, 0) MDRV_CPU_IO_MAP(slave_io_map, 0) MDRV_CPU_VBLANK_INT(slave_interrupt, 2) // nmi caused by main cpu, ? MDRV_CPU_ADD(Z80, 6000000) // ??? MDRV_CPU_PROGRAM_MAP(sound_map, 0) MDRV_CPU_IO_MAP(sound_io_map, 0) MDRV_CPU_VBLANK_INT(irq0_line_hold, 1) // nmi are caused by sub cpu writing a sound command MDRV_SCREEN_REFRESH_RATE(60) MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION) MDRV_INTERLEAVE(100) // Palette RAM is filled by sub cpu with data supplied by main cpu // Maybe a high value is safer in order to avoid glitches MDRV_MACHINE_RESET(airbustr) MDRV_WATCHDOG_VBLANK_INIT(DEFAULT_60HZ_3S_VBLANK_WATCHDOG) // video hardware MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MDRV_SCREEN_SIZE(32*8, 32*8) MDRV_SCREEN_VISIBLE_AREA(0, 32*8-1, 2*8, 30*8-1) MDRV_GFXDECODE(airbustr) MDRV_PALETTE_LENGTH(768) MDRV_VIDEO_START(airbustr) MDRV_VIDEO_UPDATE(airbustr) MDRV_VIDEO_EOF(airbustr) // sound hardware MDRV_SPEAKER_STANDARD_MONO("mono") MDRV_SOUND_ADD(YM2203, 3000000) MDRV_SOUND_CONFIG(ym2203_interface) MDRV_SOUND_ROUTE(0, "mono", 0.25) MDRV_SOUND_ROUTE(1, "mono", 0.25) MDRV_SOUND_ROUTE(2, "mono", 0.25) MDRV_SOUND_ROUTE(3, "mono", 0.50) MDRV_SOUND_ADD(OKIM6295, 12000000/4) MDRV_SOUND_CONFIG(okim6295_interface_region_1_pin7low) MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80) MACHINE_DRIVER_END static MACHINE_DRIVER_START( airbusb ) MDRV_IMPORT_FROM(airbustr) MDRV_WATCHDOG_VBLANK_INIT(0) // no protection device or watchdog MACHINE_DRIVER_END /* ROMs */ ROM_START( airbustr ) ROM_REGION( 0x24000, REGION_CPU1, 0 ) ROM_LOAD( "pr12.h19", 0x00000, 0x0c000, CRC(91362eb2) SHA1(cd85acfa6542af68dd1cad46f9426a95cfc9432e) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x24000, REGION_CPU2, 0 ) ROM_LOAD( "pr13.l15", 0x00000, 0x0c000, CRC(13b2257b) SHA1(325efa54e757a1f08caf81801930d61ea4e7b6d4) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x24000, REGION_CPU3, 0 ) ROM_LOAD( "pr-21.bin", 0x00000, 0x0c000, CRC(6e0a5df0) SHA1(616b7c7aaf52a9a55b63c60717c1866940635cd4) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x80000, REGION_GFX1, ROMREGION_DISPOSE ) ROM_LOAD( "pr-000.bin", 0x00000, 0x80000, CRC(8ca68f0d) SHA1(d60389e7e63e9850bcddecb486558de1414f1276) ) // scrolling layers ROM_REGION( 0x100000, REGION_GFX2, ROMREGION_DISPOSE ) ROM_LOAD( "pr-001.bin", 0x00000, 0x80000, CRC(7e6cb377) SHA1(005290f9f53a0c3a6a9d04486b16b7fd52cc94b6) ) // sprites ROM_LOAD( "pr-02.bin", 0x80000, 0x10000, CRC(6bbd5e46) SHA1(26563737f3f91ee0a056d35ce42217bb57d8a081) ) ROM_REGION( 0x40000, REGION_SOUND1, 0 ) /* OKI-M6295 samples */ ROM_LOAD( "pr-200.bin", 0x00000, 0x40000, CRC(a4dd3390) SHA1(2d72b46b4979857f6b66489bebda9f48799f59cf) ) ROM_END ROM_START( airbustj ) ROM_REGION( 0x24000, REGION_CPU1, 0 ) ROM_LOAD( "pr-14j.bin", 0x00000, 0x0c000, CRC(6b9805bd) SHA1(db6df33cf17316a4b81d7731dca9fe8bbf81f014) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x24000, REGION_CPU2, 0 ) ROM_LOAD( "pr-11j.bin", 0x00000, 0x0c000, CRC(85464124) SHA1(8cce8dfdede48032c40d5f155fd58061866668de) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x24000, REGION_CPU3, 0 ) ROM_LOAD( "pr-21.bin", 0x00000, 0x0c000, CRC(6e0a5df0) SHA1(616b7c7aaf52a9a55b63c60717c1866940635cd4) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x80000, REGION_GFX1, ROMREGION_DISPOSE ) ROM_LOAD( "pr-000.bin", 0x00000, 0x80000, CRC(8ca68f0d) SHA1(d60389e7e63e9850bcddecb486558de1414f1276) ) // scrolling layers ROM_REGION( 0x100000, REGION_GFX2, ROMREGION_DISPOSE ) ROM_LOAD( "pr-001.bin", 0x000000, 0x80000, CRC(7e6cb377) SHA1(005290f9f53a0c3a6a9d04486b16b7fd52cc94b6) ) // sprites ROM_LOAD( "pr-02.bin", 0x080000, 0x10000, CRC(6bbd5e46) SHA1(26563737f3f91ee0a056d35ce42217bb57d8a081) ) ROM_REGION( 0x40000, REGION_SOUND1, 0 ) /* OKI-M6295 samples */ ROM_LOAD( "pr-200.bin", 0x00000, 0x40000, CRC(a4dd3390) SHA1(2d72b46b4979857f6b66489bebda9f48799f59cf) ) ROM_END /* Differences with the original (when running on the bootleg hardware): no title screen long attract modes of every level slow downs with corrupted screen (you can see the screen being redrawn!) when there are many sprites the board has 2 oscillators (12 and 16 mhz). Rom 1 and 2 are program roms. 3 and 4 for sound. Rom 5 is on a piggyback daughterboard with a z80 and a PAL */ ROM_START( airbusb ) ROM_REGION( 0x24000, REGION_CPU1, 0 ) ROM_LOAD( "5.bin", 0x00000, 0x0c000, CRC(9e4216a2) SHA1(46572da4df5a67b10cc3ee21bdc0ec4bcecaaf93) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x24000, REGION_CPU2, 0 ) ROM_LOAD( "1.bin", 0x00000, 0x0c000, CRC(85464124) SHA1(8cce8dfdede48032c40d5f155fd58061866668de) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x24000, REGION_CPU3, 0 ) ROM_LOAD( "2.bin", 0x00000, 0x0c000, CRC(6e0a5df0) SHA1(616b7c7aaf52a9a55b63c60717c1866940635cd4) ) ROM_CONTINUE( 0x10000, 0x14000 ) ROM_REGION( 0x80000, REGION_GFX1, ROMREGION_DISPOSE ) /* Same content as airbusj, pr-001.bin, different sized roms / interleave */ ROM_LOAD16_BYTE( "7.bin", 0x00000, 0x20000, CRC(2e3bf0a2) SHA1(84cabc753e5fd1164f0a8a9a9dee7d339a5607c5) ) ROM_LOAD16_BYTE( "9.bin", 0x00001, 0x20000, CRC(2c23c646) SHA1(41c0f8788c9715918b4138f076415f8640adc483) ) ROM_LOAD16_BYTE( "6.bin", 0x40000, 0x20000, CRC(0d6cd470) SHA1(329286bc6c9d1eccc74735d1c155a0f5f98f1444) ) ROM_LOAD16_BYTE( "8.bin", 0x40001, 0x20000, CRC(b3372e51) SHA1(aa8dcbb84c829994ae04ceecbef795ac53e72493) ) ROM_REGION( 0x100000, REGION_GFX2, ROMREGION_DISPOSE ) /* Same content as airbusj, pr-001.bin, different sized roms */ ROM_LOAD( "13.bin", 0x00000, 0x20000, CRC(75dee86d) SHA1(fe342fed5bb84ee6f35d3f91987141c559e94d5a) ) ROM_LOAD( "12.bin", 0x20000, 0x20000, CRC(c98a8333) SHA1(3a990460e232ee07a9297fcffdb02451406f5bf1) ) ROM_LOAD( "11.bin", 0x40000, 0x20000, CRC(4e9baebd) SHA1(6cf878a3fb3d344e3f5f4d031fbde6f14b653636) ) ROM_LOAD( "10.bin", 0x60000, 0x20000, CRC(63dc8cd8) SHA1(4b466a8ede4211fa3f51572b223eba8766990d7a) ) ROM_LOAD( "14.bin", 0x80000, 0x10000, CRC(6bbd5e46) SHA1(26563737f3f91ee0a056d35ce42217bb57d8a081) ) ROM_REGION( 0x40000, REGION_SOUND1, 0 ) /* OKI-M6295 samples */ /* Same content as airbusj, pr-200.bin, different sized roms */ ROM_LOAD( "4.bin", 0x00000, 0x20000, CRC(21d9bfe3) SHA1(4a69458cd2a6309e389c9e7593ae29d3ef0f8daf) ) ROM_LOAD( "3.bin", 0x20000, 0x20000, CRC(58cd19e2) SHA1(479f22241bf29f7af67d9679fc6c20f10004fdd8) ) ROM_END /* Driver Initialization */ static DRIVER_INIT( airbustr ) { memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xe000, 0xefff, 0, 0, devram_r); // protection device lives here } /* Game Drivers */ GAME( 1990, airbustr, 0, airbustr, airbustr, airbustr, ROT0, "Kaneko (Namco license)", "Air Buster: Trouble Specialty Raid Unit (World)" , 0) // 891220 GAME( 1990, airbustj, airbustr, airbustr, airbustj, airbustr, ROT0, "Kaneko (Namco license)", "Air Buster: Trouble Specialty Raid Unit (Japan)" , 0) // 891229 GAME( 1990, airbusb, airbustr, airbusb, airbustj, 0, ROT0, "bootleg", "Air Buster: Trouble Specialty Raid Unit (bootleg)" , 0) // based on Japan set (891229)