/*************************************************************************** Ambush Memory Map (preliminary) driver by Zsolt Vasvari Memory Mapped: 0000-7fff R ROM 8000-87ff R/W RAM a000 R Watchdog Reset c080-c09f W Scroll RAM (1 byte for each column) c100-c1ff W Color RAM (1 line corresponds to 4 in the video ram) c200-c3ff W Sprite RAM c400-c7ff W Video RAM c800 R DIP Switches cc00-cc03 W ??? (Maybe analog sound triggers?) cc04 W Flip Screen cc05 W Color Bank Select cc07 W Coin Counter I/O Ports: 00-01 R/W AY8912 #0 (Port A = Input Port #0) 80-81 R/W AY8912 #1 (Port A = Input Port #1) TODO: - Verify actual Z80 and AY8912 clock speeds from PCB (XTAL confirmed) ***************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "sound/ay8910.h" #include "includes/ambush.h" /************************************* * * Memory handlers * *************************************/ static WRITE8_HANDLER( ambush_coin_counter_w ) { coin_counter_w(space->machine(), 0, data & 0x01); coin_counter_w(space->machine(), 1, data & 0x02); } static WRITE8_HANDLER( flip_screen_w ) { flip_screen_set(space->machine(), data); } /************************************* * * Address maps * *************************************/ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8 ) AM_RANGE(0x0000, 0x7fff) AM_ROM AM_RANGE(0x8000, 0x87ff) AM_RAM AM_RANGE(0xa000, 0xa000) AM_READ(watchdog_reset_r) AM_RANGE(0xc000, 0xc7ff) AM_RAM AM_RANGE(0xc080, 0xc09f) AM_BASE_MEMBER(ambush_state, m_scrollram) AM_RANGE(0xc100, 0xc1ff) AM_BASE_MEMBER(ambush_state, m_colorram) AM_RANGE(0xc200, 0xc3ff) AM_BASE_SIZE_MEMBER(ambush_state, m_spriteram, m_spriteram_size) AM_RANGE(0xc400, 0xc7ff) AM_BASE_SIZE_MEMBER(ambush_state, m_videoram, m_videoram_size) AM_RANGE(0xc800, 0xc800) AM_READ_PORT("DSW1") AM_RANGE(0xcc00, 0xcc03) AM_WRITENOP AM_RANGE(0xcc04, 0xcc04) AM_WRITE(flip_screen_w) AM_RANGE(0xcc05, 0xcc05) AM_WRITEONLY AM_BASE_MEMBER(ambush_state, m_colorbank) AM_RANGE(0xcc07, 0xcc07) AM_WRITE(ambush_coin_counter_w) ADDRESS_MAP_END static ADDRESS_MAP_START( main_portmap, AS_IO, 8 ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x00, 0x00) AM_DEVREADWRITE("ay1", ay8910_r, ay8910_address_w) AM_RANGE(0x01, 0x01) AM_DEVWRITE("ay1", ay8910_data_w) AM_RANGE(0x80, 0x80) AM_DEVREADWRITE("ay2", ay8910_r, ay8910_address_w) AM_RANGE(0x81, 0x81) AM_DEVWRITE("ay2", ay8910_data_w) ADDRESS_MAP_END /************************************* * * Input ports * *************************************/ static INPUT_PORTS_START( ambush ) PORT_START("SYSTEM") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_START("INPUTS") 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_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL PORT_START("DSW1") PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1,2") PORT_DIPSETTING( 0x00, "3" ) PORT_DIPSETTING( 0x01, "4" ) PORT_DIPSETTING( 0x02, "5" ) PORT_DIPSETTING( 0x03, "6" ) PORT_DIPNAME( 0x1c, 0x00, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:3,4,5") PORT_DIPSETTING( 0x10, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x14, DEF_STR( 2C_3C ) ) PORT_DIPSETTING( 0x04, DEF_STR( 1C_2C ) ) PORT_DIPSETTING( 0x18, DEF_STR( 2C_5C ) ) PORT_DIPSETTING( 0x08, DEF_STR( 1C_3C ) ) PORT_DIPSETTING( 0x0c, DEF_STR( 1C_4C ) ) PORT_DIPSETTING( 0x1c, "Service Mode/Free Play" ) PORT_DIPNAME( 0x20, 0x00, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW1:6") PORT_DIPSETTING( 0x00, DEF_STR( Easy ) ) PORT_DIPSETTING( 0x20, DEF_STR( Hard ) ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW1:7") PORT_DIPSETTING( 0x40, "80000" ) PORT_DIPSETTING( 0x00, "120000" ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SW1:8") PORT_DIPSETTING( 0x80, DEF_STR( Upright ) ) PORT_DIPSETTING( 0x00, DEF_STR( Cocktail ) ) INPUT_PORTS_END static INPUT_PORTS_START( ambusht ) PORT_INCLUDE( ambush ) PORT_MODIFY("DSW1") PORT_DIPNAME( 0x04, 0x04, DEF_STR( Allow_Continue ) ) PORT_DIPLOCATION("SW1:3") PORT_DIPSETTING( 0x00, DEF_STR( No ) ) PORT_DIPSETTING( 0x04, DEF_STR( Yes ) ) PORT_DIPNAME( 0x08, 0x00, "Service Mode/Free Play" ) PORT_DIPLOCATION("SW1:4") PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) PORT_DIPSETTING( 0x08, DEF_STR( On ) ) PORT_DIPNAME( 0x10, 0x00, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:5") PORT_DIPSETTING( 0x00, "A 1/1 B 1/2" ) PORT_DIPSETTING( 0x10, "A 2/1 B 1/3" ) INPUT_PORTS_END /************************************* * * Graphics definitions * *************************************/ static const gfx_layout charlayout = { 8,8, /* 8*8 chars */ 1024, /* 2048 characters */ 2, /* 2 bits per pixel */ { 0, 0x2000*8 }, /* The bitplanes are separate */ { 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 /* every char takes 8 consecutive bytes */ }; static const gfx_layout spritelayout = { 16,16, /* 8*8 chars */ 256, /* 2048 characters */ 2, /* 2 bits per pixel */ { 0, 0x2000*8 }, /* The bitplanes are separate */ { 0, 1, 2, 3, 4, 5, 6, 7, 8*8+0, 8*8+1, 8*8+2, 8*8+3, 8*8+4, 8*8+5, 8*8+6, 8*8+7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 16*8, 17*8, 18*8, 19*8, 20*8, 21*8, 22*8, 23*8 }, 32*8 /* every char takes 32 consecutive bytes */ }; static GFXDECODE_START( ambush ) GFXDECODE_ENTRY( "gfx1", 0x0000, charlayout, 0, 64 ) GFXDECODE_ENTRY( "gfx1", 0x0000, spritelayout, 0, 64 ) GFXDECODE_END /************************************* * * Sound interfaces * *************************************/ static const ay8910_interface ay8912_interface_1 = { AY8910_LEGACY_OUTPUT, AY8910_DEFAULT_LOADS, DEVCB_INPUT_PORT("SYSTEM"), DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }; static const ay8910_interface ay8912_interface_2 = { AY8910_LEGACY_OUTPUT, AY8910_DEFAULT_LOADS, DEVCB_INPUT_PORT("INPUTS"), DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }; /************************************* * * Machine driver * *************************************/ static MACHINE_CONFIG_START( ambush, ambush_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", Z80, XTAL_18_432MHz/6) /* XTAL confirmed, divisor guessed */ MCFG_CPU_PROGRAM_MAP(main_map) MCFG_CPU_IO_MAP(main_portmap) MCFG_CPU_VBLANK_INT("screen", irq0_line_hold) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MCFG_SCREEN_SIZE(32*8, 32*8) MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-3) /* The -3 makes the cocktail mode perfect */ MCFG_SCREEN_UPDATE(ambush) MCFG_GFXDECODE(ambush) MCFG_PALETTE_LENGTH(256) MCFG_PALETTE_INIT(ambush) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("ay1", AY8912, XTAL_18_432MHz/6/2) /* XTAL confirmed, divisor guessed */ MCFG_SOUND_CONFIG(ay8912_interface_1) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.33) MCFG_SOUND_ADD("ay2", AY8912, XTAL_18_432MHz/6/2) /* XTAL confirmed, divisor guessed */ MCFG_SOUND_CONFIG(ay8912_interface_2) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.33) MACHINE_CONFIG_END /************************************* * * ROM definition(s) * *************************************/ /* displays an M next to ROM 1 during the test, why is internal checksum wrong (0x02 instead of 0x00) ? */ ROM_START( ambush ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "a1.i7", 0x0000, 0x2000, CRC(a7cd149d) SHA1(470ebe60bc23a7908fb96caef8074d65f8c57625) ) ROM_LOAD( "a2.g7", 0x2000, 0x2000, CRC(8328d88a) SHA1(690f0af10a0550566b67ee570f849b2764448d15) ) ROM_LOAD( "a3.f7", 0x4000, 0x2000, CRC(8db57ab5) SHA1(5cc7d7ebdfc91fb8d9ed52836d70c1de68001402) ) ROM_LOAD( "a4.e7", 0x6000, 0x2000, CRC(4a34d2a4) SHA1(ad623161cd6031cb6503ff7445fdd9fb4ea83c8c) ) ROM_REGION( 0x4000, "gfx1", 0 ) ROM_LOAD( "fa2.n4", 0x0000, 0x2000, CRC(e7f134ba) SHA1(c38321f3da049f756337cba5b3c71f6935922f80) ) ROM_LOAD( "fa1.m4", 0x2000, 0x2000, CRC(ad10969e) SHA1(4cfccdc4ca377693e92d77cde16f88bbdb840b38) ) ROM_REGION( 0x0400, "proms", 0 ) ROM_LOAD( "a.bpr", 0x0000, 0x0100, CRC(5f27f511) SHA1(fe3ae701443ff50d3d03c0a5d0e0ab0e716b05cc) ) /* color PROMs */ ROM_LOAD( "b.bpr", 0x0100, 0x0100, CRC(1b03fd3b) SHA1(1a58b212476cacace6065056f23b59a69053a2f6) ) /* How is this selected, */ ROM_LOAD( "13.bpr", 0x0200, 0x0100, CRC(547e970f) SHA1(e2ec0bece49fb283e43549703d6d5d6f561c69a6) ) /* I'm not sure what these do. */ ROM_LOAD( "14.bpr", 0x0300, 0x0100, CRC(622a8ce7) SHA1(6834f67874251f2ef3a33aec893311f5d10e496f) ) /* They don't look like color PROMs */ ROM_END ROM_START( ambushj ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "ambush.h7", 0x0000, 0x2000, CRC(ce306563) SHA1(c69b5c4465187a8eda6367d6cd3e0b71a57588d1) ) ROM_LOAD( "ambush.g7", 0x2000, 0x2000, CRC(90291409) SHA1(82f1e109bd066ad9fdea1ce0086be6c334e2658a) ) ROM_LOAD( "ambush.f7", 0x4000, 0x2000, CRC(d023ca29) SHA1(1ac44960cf6d79936517a9ad4bae6ccd825c9496) ) ROM_LOAD( "ambush.e7", 0x6000, 0x2000, CRC(6cc2d3ee) SHA1(dccb417d156460ca745d7b62f1df733cbf85d092) ) ROM_REGION( 0x4000, "gfx1", 0 ) ROM_LOAD( "ambush.n4", 0x0000, 0x2000, CRC(ecc0dc85) SHA1(577304bb575293b97b50eea4faafb5394e3da0f5) ) ROM_LOAD( "ambush.m4", 0x2000, 0x2000, CRC(e86ca98a) SHA1(fae0786bb78ead81653adddd2edb3058371ca5bc) ) ROM_REGION( 0x0400, "proms", 0 ) ROM_LOAD( "a.bpr", 0x0000, 0x0100, CRC(5f27f511) SHA1(fe3ae701443ff50d3d03c0a5d0e0ab0e716b05cc) ) /* color PROMs */ ROM_LOAD( "b.bpr", 0x0100, 0x0100, CRC(1b03fd3b) SHA1(1a58b212476cacace6065056f23b59a69053a2f6) ) /* How is this selected, */ ROM_LOAD( "13.bpr", 0x0200, 0x0100, CRC(547e970f) SHA1(e2ec0bece49fb283e43549703d6d5d6f561c69a6) ) /* I'm not sure what these do. */ ROM_LOAD( "14.bpr", 0x0300, 0x0100, CRC(622a8ce7) SHA1(6834f67874251f2ef3a33aec893311f5d10e496f) ) /* They don't look like color PROMs */ ROM_END ROM_START( ambushv ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "n1_h7.bin", 0x0000, 0x2000, CRC(3c0833b4) SHA1(dd0cfb6da281742114abfe652d38038b078b959e) ) ROM_LOAD( "ambush.g7", 0x2000, 0x2000, CRC(90291409) SHA1(82f1e109bd066ad9fdea1ce0086be6c334e2658a) ) ROM_LOAD( "ambush.f7", 0x4000, 0x2000, CRC(d023ca29) SHA1(1ac44960cf6d79936517a9ad4bae6ccd825c9496) ) ROM_LOAD( "ambush.e7", 0x6000, 0x2000, CRC(6cc2d3ee) SHA1(dccb417d156460ca745d7b62f1df733cbf85d092) ) ROM_REGION( 0x4000, "gfx1", 0 ) ROM_LOAD( "ambush.n4", 0x0000, 0x2000, CRC(ecc0dc85) SHA1(577304bb575293b97b50eea4faafb5394e3da0f5) ) ROM_LOAD( "ambush.m4", 0x2000, 0x2000, CRC(e86ca98a) SHA1(fae0786bb78ead81653adddd2edb3058371ca5bc) ) ROM_REGION( 0x0400, "proms", 0 ) ROM_LOAD( "a.bpr", 0x0000, 0x0100, CRC(5f27f511) SHA1(fe3ae701443ff50d3d03c0a5d0e0ab0e716b05cc) ) /* color PROMs */ ROM_LOAD( "b.bpr", 0x0100, 0x0100, CRC(1b03fd3b) SHA1(1a58b212476cacace6065056f23b59a69053a2f6) ) /* How is this selected, */ ROM_LOAD( "13.bpr", 0x0200, 0x0100, CRC(547e970f) SHA1(e2ec0bece49fb283e43549703d6d5d6f561c69a6) ) /* I'm not sure what these do. */ ROM_LOAD( "14.bpr", 0x0300, 0x0100, CRC(622a8ce7) SHA1(6834f67874251f2ef3a33aec893311f5d10e496f) ) /* They don't look like color PROMs */ ROM_END /************************************* * * Game driver(s) * *************************************/ GAME( 1983, ambush, 0, ambush, ambusht, 0, ROT0, "Tecfri", "Ambush", GAME_SUPPORTS_SAVE ) GAME( 1983, ambushj, ambush, ambush, ambush, 0, ROT0, "Tecfri (Nippon Amuse license)", "Ambush (Japan)", GAME_SUPPORTS_SAVE ) GAME( 1983, ambushv, ambush, ambush, ambush, 0, ROT0, "Tecfri (Volt Electronics license)", "Ambush (Volt Electronics)", GAME_SUPPORTS_SAVE )