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Diffstat (limited to 'src/mame/drivers/pbaction.c')
-rw-r--r--src/mame/drivers/pbaction.c425
1 files changed, 425 insertions, 0 deletions
diff --git a/src/mame/drivers/pbaction.c b/src/mame/drivers/pbaction.c
new file mode 100644
index 00000000000..d02143ad866
--- /dev/null
+++ b/src/mame/drivers/pbaction.c
@@ -0,0 +1,425 @@
+/***************************************************************************
+
+Pinball Action memory map (preliminary)
+
+driver by Nicola Salmoria
+
+
+0000-9fff ROM
+d000-d3ff Video RAM
+d400-d7ff Color RAM
+d800-dbff Background Video RAM
+dc00-dfff Background Color RAM
+e000-e07f Sprites
+e400-e5ff Palette RAM
+
+read:
+e600 IN0
+e601 IN1
+e602 IN2
+e604 DSW1
+e605 DSW2
+e606 watchdog reset????
+
+write:
+e600 interrupt enable
+e604 flip screen
+e606 bg scroll? not sure
+e800 command for the sound CPU
+
+
+Notes:
+- pbactio2 has a ROM for a third Z80, not emulated, function unknown
+
+***************************************************************************/
+
+#include "driver.h"
+#include "sound/ay8910.h"
+#include "machine/segacrpt.h"
+
+
+extern UINT8 *pbaction_videoram2,*pbaction_colorram2;
+
+extern WRITE8_HANDLER( pbaction_videoram_w );
+extern WRITE8_HANDLER( pbaction_colorram_w );
+extern WRITE8_HANDLER( pbaction_videoram2_w );
+extern WRITE8_HANDLER( pbaction_colorram2_w );
+extern WRITE8_HANDLER( pbaction_flipscreen_w );
+extern WRITE8_HANDLER( pbaction_scroll_w );
+
+extern VIDEO_START( pbaction );
+extern VIDEO_UPDATE( pbaction );
+
+
+static WRITE8_HANDLER( pbaction_sh_command_w )
+{
+ soundlatch_w(offset,data);
+ cpunum_set_input_line_and_vector(1,0,HOLD_LINE,0x00);
+}
+
+
+static UINT8 *work_ram;
+
+
+static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x7fff) AM_READ(MRA8_ROM)
+ AM_RANGE(0x8000, 0xbfff) AM_READ(MRA8_ROM)
+ AM_RANGE(0xc000, 0xdfff) AM_READ(MRA8_RAM)
+ AM_RANGE(0xe000, 0xe07f) AM_READ(MRA8_RAM)
+ AM_RANGE(0xe400, 0xe5ff) AM_READ(MRA8_RAM)
+ AM_RANGE(0xe600, 0xe600) AM_READ(input_port_0_r) /* IN0 */
+ AM_RANGE(0xe601, 0xe601) AM_READ(input_port_1_r) /* IN1 */
+ AM_RANGE(0xe602, 0xe602) AM_READ(input_port_2_r) /* IN2 */
+ AM_RANGE(0xe604, 0xe604) AM_READ(input_port_3_r) /* DSW1 */
+ AM_RANGE(0xe605, 0xe605) AM_READ(input_port_4_r) /* DSW2 */
+ AM_RANGE(0xe606, 0xe606) AM_READ(MRA8_NOP) /* ??? */
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x7fff) AM_WRITE(MWA8_ROM)
+ AM_RANGE(0x8000, 0xbfff) AM_WRITE(MWA8_ROM)
+ AM_RANGE(0xc000, 0xcfff) AM_WRITE(MWA8_RAM) AM_BASE(&work_ram)
+ AM_RANGE(0xd000, 0xd3ff) AM_WRITE(pbaction_videoram2_w) AM_BASE(&pbaction_videoram2)
+ AM_RANGE(0xd400, 0xd7ff) AM_WRITE(pbaction_colorram2_w) AM_BASE(&pbaction_colorram2)
+ AM_RANGE(0xd800, 0xdbff) AM_WRITE(pbaction_videoram_w) AM_BASE(&videoram)
+ AM_RANGE(0xdc00, 0xdfff) AM_WRITE(pbaction_colorram_w) AM_BASE(&colorram)
+ AM_RANGE(0xe000, 0xe07f) AM_WRITE(MWA8_RAM) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
+ AM_RANGE(0xe400, 0xe5ff) AM_WRITE(paletteram_xxxxBBBBGGGGRRRR_le_w) AM_BASE(&paletteram)
+ AM_RANGE(0xe600, 0xe600) AM_WRITE(interrupt_enable_w)
+ AM_RANGE(0xe604, 0xe604) AM_WRITE(pbaction_flipscreen_w)
+ AM_RANGE(0xe606, 0xe606) AM_WRITE(pbaction_scroll_w)
+ AM_RANGE(0xe800, 0xe800) AM_WRITE(pbaction_sh_command_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x1fff) AM_READ(MRA8_ROM)
+ AM_RANGE(0x4000, 0x47ff) AM_READ(MRA8_RAM)
+ AM_RANGE(0x8000, 0x8000) AM_READ(soundlatch_r)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x1fff) AM_WRITE(MWA8_ROM)
+ AM_RANGE(0x4000, 0x47ff) AM_WRITE(MWA8_RAM)
+ AM_RANGE(0xffff, 0xffff) AM_WRITE(MWA8_NOP) /* watchdog? */
+ADDRESS_MAP_END
+
+
+static ADDRESS_MAP_START( sound_writeport, ADDRESS_SPACE_IO, 8 )
+ ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
+ AM_RANGE(0x10, 0x10) AM_WRITE(AY8910_control_port_0_w)
+ AM_RANGE(0x11, 0x11) AM_WRITE(AY8910_write_port_0_w)
+ AM_RANGE(0x20, 0x20) AM_WRITE(AY8910_control_port_1_w)
+ AM_RANGE(0x21, 0x21) AM_WRITE(AY8910_write_port_1_w)
+ AM_RANGE(0x30, 0x30) AM_WRITE(AY8910_control_port_2_w)
+ AM_RANGE(0x31, 0x31) AM_WRITE(AY8910_write_port_2_w)
+ADDRESS_MAP_END
+
+
+static INPUT_PORTS_START( pbaction )
+ PORT_START /* IN0 */
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON3 )
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON4 )
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON1 )
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON2 )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+
+ PORT_START /* IN1 */
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_COCKTAIL
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON4 ) PORT_COCKTAIL
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_COCKTAIL
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+
+ PORT_START /* IN2 */
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_START1 )
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_START2 )
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
+
+ PORT_START /* DSW0 */
+ PORT_DIPNAME( 0x03, 0x00, DEF_STR( Coin_B ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x01, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x02, DEF_STR( 1C_3C ) )
+ PORT_DIPSETTING( 0x03, DEF_STR( 1C_6C ) )
+ PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coin_A ) )
+ PORT_DIPSETTING( 0x04, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x08, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x0c, DEF_STR( 1C_3C ) )
+ PORT_DIPNAME( 0x30, 0x00, DEF_STR( Lives ) )
+ PORT_DIPSETTING( 0x30, "2" )
+ PORT_DIPSETTING( 0x00, "3" )
+ PORT_DIPSETTING( 0x10, "4" )
+ PORT_DIPSETTING( 0x20, "5" )
+ PORT_DIPNAME( 0x40, 0x40, DEF_STR( Cabinet ) )
+ PORT_DIPSETTING( 0x40, DEF_STR( Upright ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( Cocktail ) )
+ PORT_DIPNAME( 0x80, 0x00, DEF_STR( Demo_Sounds ) )
+ PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( On ) )
+
+ PORT_START /* DSW1 */
+ PORT_DIPNAME( 0x07, 0x00, DEF_STR( Bonus_Life ) )
+ PORT_DIPSETTING( 0x01, "70K 200K 1000K" )
+ PORT_DIPSETTING( 0x00, "70K 200K" )
+ PORT_DIPSETTING( 0x04, "100K 300K 1000K" )
+ PORT_DIPSETTING( 0x03, "100K 300K" )
+ PORT_DIPSETTING( 0x02, "100K" )
+ PORT_DIPSETTING( 0x06, "200K 1000K" )
+ PORT_DIPSETTING( 0x05, "200K" )
+ PORT_DIPSETTING( 0x07, DEF_STR( None ) )
+ PORT_DIPNAME( 0x08, 0x00, "Extra" )
+ PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )
+ PORT_DIPSETTING( 0x08, DEF_STR( Hard ) )
+ PORT_DIPNAME( 0x30, 0x00, "Difficulty (Flippers)" )
+ PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )
+ PORT_DIPSETTING( 0x10, DEF_STR( Medium ) )
+ PORT_DIPSETTING( 0x20, DEF_STR( Hard ) )
+ PORT_DIPSETTING( 0x30, DEF_STR( Hardest ) )
+ PORT_DIPNAME( 0xc0, 0x00, "Difficulty (Outlanes)" )
+ PORT_DIPSETTING( 0x00, DEF_STR( Easy ) )
+ PORT_DIPSETTING( 0x40, DEF_STR( Medium ) )
+ PORT_DIPSETTING( 0x80, DEF_STR( Hard ) )
+ PORT_DIPSETTING( 0xc0, DEF_STR( Hardest ) )
+INPUT_PORTS_END
+
+
+
+static const gfx_layout charlayout1 =
+{
+ 8,8, /* 8*8 characters */
+ 1024, /* 1024 characters */
+ 3, /* 3 bits per pixel */
+ { 0, 1024*8*8, 2*1024*8*8 }, /* the bitplanes are separated */
+ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* pretty straightforward layout */
+ { 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 charlayout2 =
+{
+ 8,8, /* 8*8 characters */
+ 2048, /* 2048 characters */
+ 4, /* 4 bits per pixel */
+ { 0, 2048*8*8, 2*2048*8*8, 3*2048*8*8 }, /* the bitplanes are separated */
+ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* pretty straightforward layout */
+ { 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 spritelayout1 =
+{
+ 16,16, /* 16*16 sprites */
+ 128, /* 128 sprites */
+ 3, /* 3 bits per pixel */
+ { 0, 256*16*16, 2*256*16*16 }, /* the bitplanes are separated */
+ { 0, 1, 2, 3, 4, 5, 6, 7, /* pretty straightforward layout */
+ 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 sprite takes 32 consecutive bytes */
+};
+static const gfx_layout spritelayout2 =
+{
+ 32,32, /* 32*32 sprites */
+ 32, /* 32 sprites */
+ 3, /* 3 bits per pixel */
+ { 0*64*32*32, 1*64*32*32, 2*64*32*32 }, /* the bitplanes are separated */
+ { 0, 1, 2, 3, 4, 5, 6, 7, /* pretty straightforward layout */
+ 8*8+0, 8*8+1, 8*8+2, 8*8+3, 8*8+4, 8*8+5, 8*8+6, 8*8+7,
+ 32*8+0, 32*8+1, 32*8+2, 32*8+3, 32*8+4, 32*8+5, 32*8+6, 32*8+7,
+ 40*8+0, 40*8+1, 40*8+2, 40*8+3, 40*8+4, 40*8+5, 40*8+6, 40*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,
+ 64*8, 65*8, 66*8, 67*8, 68*8, 69*8, 70*8, 71*8,
+ 80*8, 81*8, 82*8, 83*8, 84*8, 85*8, 86*8, 87*8 },
+ 128*8 /* every sprite takes 128 consecutive bytes */
+};
+
+
+
+static GFXDECODE_START( pbaction )
+ GFXDECODE_ENTRY( REGION_GFX1, 0x00000, charlayout1, 0, 16 ) /* 0-127 characters */
+ GFXDECODE_ENTRY( REGION_GFX2, 0x00000, charlayout2, 128, 8 ) /* 128-255 background */
+ GFXDECODE_ENTRY( REGION_GFX3, 0x00000, spritelayout1, 0, 16 ) /* 0-127 normal sprites */
+ GFXDECODE_ENTRY( REGION_GFX3, 0x01000, spritelayout2, 0, 16 ) /* 0-127 large sprites */
+GFXDECODE_END
+
+
+static INTERRUPT_GEN( pbaction_interrupt )
+{
+ cpunum_set_input_line_and_vector(1, 0, HOLD_LINE, 0x02); /* the CPU is in Interrupt Mode 2 */
+}
+
+
+static MACHINE_DRIVER_START( pbaction )
+
+ /* basic machine hardware */
+ MDRV_CPU_ADD(Z80, 4000000) /* 4 MHz? */
+ MDRV_CPU_PROGRAM_MAP(readmem,writemem)
+ MDRV_CPU_VBLANK_INT(nmi_line_pulse,1)
+
+ MDRV_CPU_ADD(Z80, 3072000)
+ /* audio CPU */
+ MDRV_CPU_PROGRAM_MAP(sound_readmem,sound_writemem)
+ MDRV_CPU_IO_MAP(0,sound_writeport)
+ MDRV_CPU_VBLANK_INT(pbaction_interrupt,2) /* ??? */
+ /* IRQs are caused by the main CPU */
+ MDRV_SCREEN_REFRESH_RATE(60)
+ MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)
+
+ /* 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*8, 32*8-1, 2*8, 30*8-1)
+ MDRV_GFXDECODE(pbaction)
+ MDRV_PALETTE_LENGTH(256)
+
+ MDRV_VIDEO_START(pbaction)
+ MDRV_VIDEO_UPDATE(pbaction)
+
+ /* sound hardware */
+ MDRV_SPEAKER_STANDARD_MONO("mono")
+
+ MDRV_SOUND_ADD(AY8910, 1500000)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+
+ MDRV_SOUND_ADD(AY8910, 1500000)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+
+ MDRV_SOUND_ADD(AY8910, 1500000)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
+MACHINE_DRIVER_END
+
+
+
+/***************************************************************************
+
+ Game driver(s)
+
+***************************************************************************/
+
+ROM_START( pbaction )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ ROM_LOAD( "b-p7.bin", 0x0000, 0x4000, CRC(8d6dcaae) SHA1(c9e605f9d291cb8c7163655ea96c605b7d30365f) )
+ ROM_LOAD( "b-n7.bin", 0x4000, 0x4000, CRC(d54d5402) SHA1(a4c3205bfe5fba8bb1ff3ad15941a77c35b44a27) )
+ ROM_LOAD( "b-l7.bin", 0x8000, 0x2000, CRC(e7412d68) SHA1(e75731d9bea80e0dc09798dd46e3b947fdb54aaa) )
+
+ ROM_REGION( 0x10000, REGION_CPU2, 0 ) /* 64k for sound board */
+ ROM_LOAD( "a-e3.bin", 0x0000, 0x2000, CRC(0e53a91f) SHA1(df2827197cd55c3685e5ac8b26c20800623cb932) )
+
+ ROM_REGION( 0x06000, REGION_GFX1, ROMREGION_DISPOSE )
+ ROM_LOAD( "a-s6.bin", 0x00000, 0x2000, CRC(9a74a8e1) SHA1(bd27439b91f41db3fd7eedb44e828d61b793bda0) )
+ ROM_LOAD( "a-s7.bin", 0x02000, 0x2000, CRC(5ca6ad3c) SHA1(7c8eff087f18cc2ff0572ea45e681a3a1ec94fad) )
+ ROM_LOAD( "a-s8.bin", 0x04000, 0x2000, CRC(9f00b757) SHA1(74b6d926b8f456c8d0101f0232c5d3662423b396) )
+
+ ROM_REGION( 0x10000, REGION_GFX2, ROMREGION_DISPOSE )
+ ROM_LOAD( "a-j5.bin", 0x00000, 0x4000, CRC(21efe866) SHA1(0c0a05a26d793ba98b0f421d464ff4b1d301ff9e) )
+ ROM_LOAD( "a-j6.bin", 0x04000, 0x4000, CRC(7f984c80) SHA1(18795ecbcd2da94f1cfcce5559d652388d1b8bc0) )
+ ROM_LOAD( "a-j7.bin", 0x08000, 0x4000, CRC(df69e51b) SHA1(52ab15c63332f0fa98884fa9adc8d35b93c939c4) )
+ ROM_LOAD( "a-j8.bin", 0x0c000, 0x4000, CRC(0094cb8b) SHA1(58f48d24903b797e8451bf231f9e8df621685d9f) )
+
+ ROM_REGION( 0x06000, REGION_GFX3, ROMREGION_DISPOSE )
+ ROM_LOAD( "b-c7.bin", 0x00000, 0x2000, CRC(d1795ef5) SHA1(69ad8e419e340d2f548468ed7838102789b978da) )
+ ROM_LOAD( "b-d7.bin", 0x02000, 0x2000, CRC(f28df203) SHA1(060f70ed6386c808303a488c97691257681bd8f3) )
+ ROM_LOAD( "b-f7.bin", 0x04000, 0x2000, CRC(af6e9817) SHA1(56f47d25761b3850c49a3a81b5ea35f12bd77b14) )
+ROM_END
+
+
+ROM_START( pbactio2 )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ ROM_LOAD( "pba16.bin", 0x0000, 0x4000, CRC(4a239ebd) SHA1(74e6da0485ac78093b4f09953fa3accb14bc3e43) )
+ ROM_LOAD( "pba15.bin", 0x4000, 0x4000, CRC(3afef03a) SHA1(dec714415d2fd00c9021171a48f6c94b40888ae8) )
+ ROM_LOAD( "pba14.bin", 0x8000, 0x2000, CRC(c0a98c8a) SHA1(442f37af31db13fd98602dd7f9eeae5529da0f44) )
+
+ ROM_REGION( 0x10000, REGION_CPU2, 0 ) /* 64k for sound board */
+ ROM_LOAD( "pba1.bin", 0x0000, 0x2000, CRC(8b69b933) SHA1(eb0762579d52ed9f5b1a002ffe7e517c59650e22) )
+
+ ROM_REGION( 0x10000, REGION_CPU3, 0 ) /* 64k for a third Z80 (not emulated) */
+ ROM_LOAD( "pba17.bin", 0x0000, 0x4000, CRC(2734ae60) SHA1(4edcdfac1611c49c4f890609efbe8352b8161f8e) )
+
+ ROM_REGION( 0x06000, REGION_GFX1, ROMREGION_DISPOSE )
+ ROM_LOAD( "a-s6.bin", 0x00000, 0x2000, CRC(9a74a8e1) SHA1(bd27439b91f41db3fd7eedb44e828d61b793bda0) )
+ ROM_LOAD( "a-s7.bin", 0x02000, 0x2000, CRC(5ca6ad3c) SHA1(7c8eff087f18cc2ff0572ea45e681a3a1ec94fad) )
+ ROM_LOAD( "a-s8.bin", 0x04000, 0x2000, CRC(9f00b757) SHA1(74b6d926b8f456c8d0101f0232c5d3662423b396) )
+
+ ROM_REGION( 0x10000, REGION_GFX2, ROMREGION_DISPOSE )
+ ROM_LOAD( "a-j5.bin", 0x00000, 0x4000, CRC(21efe866) SHA1(0c0a05a26d793ba98b0f421d464ff4b1d301ff9e) )
+ ROM_LOAD( "a-j6.bin", 0x04000, 0x4000, CRC(7f984c80) SHA1(18795ecbcd2da94f1cfcce5559d652388d1b8bc0) )
+ ROM_LOAD( "a-j7.bin", 0x08000, 0x4000, CRC(df69e51b) SHA1(52ab15c63332f0fa98884fa9adc8d35b93c939c4) )
+ ROM_LOAD( "a-j8.bin", 0x0c000, 0x4000, CRC(0094cb8b) SHA1(58f48d24903b797e8451bf231f9e8df621685d9f) )
+
+ ROM_REGION( 0x06000, REGION_GFX3, ROMREGION_DISPOSE )
+ ROM_LOAD( "b-c7.bin", 0x00000, 0x2000, CRC(d1795ef5) SHA1(69ad8e419e340d2f548468ed7838102789b978da) )
+ ROM_LOAD( "b-d7.bin", 0x02000, 0x2000, CRC(f28df203) SHA1(060f70ed6386c808303a488c97691257681bd8f3) )
+ ROM_LOAD( "b-f7.bin", 0x04000, 0x2000, CRC(af6e9817) SHA1(56f47d25761b3850c49a3a81b5ea35f12bd77b14) )
+ROM_END
+
+ROM_START( pbactio3 )
+ ROM_REGION( 2*0x10000, REGION_CPU1, 0 )
+ ROM_LOAD( "14.bin", 0x0000, 0x4000, CRC(f17a62eb) SHA1(8dabfc0ad127c154c0293a65df32d52d57dd9755) )
+ ROM_LOAD( "12.bin", 0x4000, 0x4000, CRC(ec3c64c6) SHA1(6130b80606d717f95e219316c2d3fa0a1980ea1d) )
+ ROM_LOAD( "13.bin", 0x8000, 0x4000, CRC(c93c851e) SHA1(b41077708fce4ccbcecdeae32af8821ca5322e87) )
+
+ ROM_REGION( 0x10000, REGION_CPU2, 0 ) /* 64k for sound board */
+ ROM_LOAD( "pba1.bin", 0x0000, 0x2000, CRC(8b69b933) SHA1(eb0762579d52ed9f5b1a002ffe7e517c59650e22) )
+
+ ROM_REGION( 0x06000, REGION_GFX1, ROMREGION_DISPOSE )
+ ROM_LOAD( "a-s6.bin", 0x00000, 0x2000, CRC(9a74a8e1) SHA1(bd27439b91f41db3fd7eedb44e828d61b793bda0) )
+ ROM_LOAD( "a-s7.bin", 0x02000, 0x2000, CRC(5ca6ad3c) SHA1(7c8eff087f18cc2ff0572ea45e681a3a1ec94fad) )
+ ROM_LOAD( "a-s8.bin", 0x04000, 0x2000, CRC(9f00b757) SHA1(74b6d926b8f456c8d0101f0232c5d3662423b396) )
+
+ ROM_REGION( 0x10000, REGION_GFX2, ROMREGION_DISPOSE )
+ ROM_LOAD( "a-j5.bin", 0x00000, 0x4000, CRC(21efe866) SHA1(0c0a05a26d793ba98b0f421d464ff4b1d301ff9e) )
+ ROM_LOAD( "a-j6.bin", 0x04000, 0x4000, CRC(7f984c80) SHA1(18795ecbcd2da94f1cfcce5559d652388d1b8bc0) )
+ ROM_LOAD( "a-j7.bin", 0x08000, 0x4000, CRC(df69e51b) SHA1(52ab15c63332f0fa98884fa9adc8d35b93c939c4) )
+ ROM_LOAD( "a-j8.bin", 0x0c000, 0x4000, CRC(0094cb8b) SHA1(58f48d24903b797e8451bf231f9e8df621685d9f) )
+
+ ROM_REGION( 0x06000, REGION_GFX3, ROMREGION_DISPOSE )
+ ROM_LOAD( "b-c7.bin", 0x00000, 0x2000, CRC(d1795ef5) SHA1(69ad8e419e340d2f548468ed7838102789b978da) )
+ ROM_LOAD( "b-d7.bin", 0x02000, 0x2000, CRC(f28df203) SHA1(060f70ed6386c808303a488c97691257681bd8f3) )
+ ROM_LOAD( "b-f7.bin", 0x04000, 0x2000, CRC(af6e9817) SHA1(56f47d25761b3850c49a3a81b5ea35f12bd77b14) )
+ROM_END
+
+
+static READ8_HANDLER( pbactio3_prot_kludge_r )
+{
+ /* on startup, the game expect this location to NOT act as RAM */
+ if (activecpu_get_pc() == 0xab80)
+ return 0;
+
+ return work_ram[0];
+}
+
+static DRIVER_INIT( pbactio3 )
+{
+ int i;
+ UINT8 *rom = memory_region(REGION_CPU1);
+
+ /* first of all, do a simple bitswap */
+ for (i = 0;i < 0xc000;i++)
+ {
+ rom[i] = BITSWAP8(rom[i], 7,6,5,4,1,2,3,0);
+ }
+
+ /* then do the standard Sega decryption */
+ pbaction_decode();
+
+ /* install a protection (?) workaround */
+ memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xc000, 0xc000, 0, 0, pbactio3_prot_kludge_r );
+}
+
+
+GAME( 1985, pbaction, 0, pbaction, pbaction, 0, ROT90, "Tehkan", "Pinball Action (set 1)", 0 )
+GAME( 1985, pbactio2, pbaction, pbaction, pbaction, 0, ROT90, "Tehkan", "Pinball Action (set 2)", 0 )
+GAME( 1985, pbactio3, pbaction, pbaction, pbaction, pbactio3, ROT90, "Tehkan", "Pinball Action (set 3, encrypted)", 0 )