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Diffstat (limited to 'src/mame/drivers/airbustr.c')
-rw-r--r--src/mame/drivers/airbustr.c763
1 files changed, 763 insertions, 0 deletions
diff --git a/src/mame/drivers/airbustr.c b/src/mame/drivers/airbustr.c
new file mode 100644
index 00000000000..67d34077ede
--- /dev/null
+++ b/src/mame/drivers/airbustr.c
@@ -0,0 +1,763 @@
+/***************************************************************************
+
+ 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)