/***************************************************************************
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
Stephh's notes (based on the game Z80 code and some tests) :
- There is an ingame bug that prevents you to get a bonus life at 1000000 points
when you set the "Bonus Life" Dip Switch to "200k 1000k" :
* Bonus life table index starts at 0x63c6 (8 * 2 butes, LSB first) :
63C6: D6 63 "70k 200k" -> 04 07 03 02 01 10
63C8: DC 63 "70k 200k 1000k" -> 04 07 03 02 02 01 01 10
63CA: E4 63 "100k" -> 03 01 01 10
63CC: E8 63 "100k 300k" -> 03 01 03 03 01 10
63CE: EE 63 "100k 300k 1000k" -> 03 01 03 03 02 01 01 10
63D0: F6 63 "200k" -> 03 02 01 10
63D2: FA 63 "200k 1000k" -> 03 02 01 10 !!!
63D4: FE 63 "None" -> 01 10
* Each "pair" determines the digit number, then what shall be its value :
digit : 12 345 67
number : 99.999.990
Note that digit 1 is displayed outside the score box.
* As each digit value can only be 00 to 09, 10 as a bonus life value
means that you can't get anymore bonus life.
* Now look at 7th table : first, you notice that it's the same as the
6th table; then you find that the first bonus life at 200k and you see
the end of table "marker" (01 10) instead of having 02 01.
* As addresses and data are the same (after decryption in 'pbactio3'),
this bug affects the 3 sets.
***************************************************************************/
#include "driver.h"
#include "cpu/z80/z80.h"
#include "deprecat.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(space,offset,data);
cpu_set_input_line_and_vector(space->machine->cpu[1],0,HOLD_LINE,0x00);
}
static UINT8 *work_ram;
static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x7fff) AM_READ(SMH_ROM)
AM_RANGE(0x8000, 0xbfff) AM_READ(SMH_ROM)
AM_RANGE(0xc000, 0xdfff) AM_READ(SMH_RAM)
AM_RANGE(0xe000, 0xe07f) AM_READ(SMH_RAM)
AM_RANGE(0xe400, 0xe5ff) AM_READ(SMH_RAM)
AM_RANGE(0xe600, 0xe600) AM_READ_PORT("P1")
AM_RANGE(0xe601, 0xe601) AM_READ_PORT("P2")
AM_RANGE(0xe602, 0xe602) AM_READ_PORT("SYSTEM")
AM_RANGE(0xe604, 0xe604) AM_READ_PORT("DSW1")
AM_RANGE(0xe605, 0xe605) AM_READ_PORT("DSW2")
AM_RANGE(0xe606, 0xe606) AM_READ(SMH_NOP) /* ??? */
ADDRESS_MAP_END
static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x7fff) AM_WRITE(SMH_ROM)
AM_RANGE(0x8000, 0xbfff) AM_WRITE(SMH_ROM)
AM_RANGE(0xc000, 0xcfff) AM_WRITE(SMH_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(SMH_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(SMH_ROM)
AM_RANGE(0x4000, 0x47ff) AM_READ(SMH_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(SMH_ROM)
AM_RANGE(0x4000, 0x47ff) AM_WRITE(SMH_RAM)
AM_RANGE(0xffff, 0xffff) AM_WRITE(SMH_NOP) /* watchdog? */
ADDRESS_MAP_END
static ADDRESS_MAP_START( sound_io_map, ADDRESS_SPACE_IO, 8 )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x10, 0x11) AM_DEVWRITE("ay1", ay8910_address_data_w)
AM_RANGE(0x20, 0x21) AM_DEVWRITE("ay2", ay8910_address_data_w)
AM_RANGE(0x30, 0x31) AM_DEVWRITE("ay3", ay8910_address_data_w)
ADDRESS_MAP_END
static INPUT_PORTS_START( pbaction )
PORT_START("P1")
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("P2")
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("SYSTEM")
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("DSW1")
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("DSW2")
PORT_DIPNAME( 0x07, 0x00, DEF_STR( Bonus_Life ) )
PORT_DIPSETTING( 0x01, "70k 200k 1000k" )
PORT_DIPSETTING( 0x04, "100k 300k 1000k" )
PORT_DIPSETTING( 0x00, "70k 200k" )
PORT_DIPSETTING( 0x03, "100k 300k" )
PORT_DIPSETTING( 0x06, "200k 1000k" ) /* see notes */
PORT_DIPSETTING( 0x02, "100k" )
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,
RGN_FRAC(1,3),
3,
{ RGN_FRAC(0,3), RGN_FRAC(1,3), RGN_FRAC(2,3) },
{ STEP8(0,1) },
{ STEP8(0,8) },
8*8
};
static const gfx_layout charlayout2 =
{
8,8,
RGN_FRAC(1,4),
4,
{ RGN_FRAC(0,4), RGN_FRAC(1,4), RGN_FRAC(2,4), RGN_FRAC(3,4) },
{ STEP8(0,1) },
{ STEP8(0,8) },
8*8
};
static const gfx_layout spritelayout1 =
{
16,16,
RGN_FRAC(1,3),
3,
{ RGN_FRAC(0,3), RGN_FRAC(1,3), RGN_FRAC(2,3) },
{ STEP8(0,1), STEP8(64,1) },
{ STEP8(0,8), STEP8(128,8) },
32*8
};
static const gfx_layout spritelayout2 =
{
32,32,
RGN_FRAC(1,6),
3,
{ RGN_FRAC(0,3), RGN_FRAC(1,3), RGN_FRAC(2,3) },
{ STEP8(0,1), STEP8(64,1), STEP8(256,1), STEP8(320,1) },
{ STEP8(0,8), STEP8(128,8), STEP8(512,8), STEP8(640,8) },
128*8
};
static GFXDECODE_START( pbaction )
GFXDECODE_ENTRY( "fgchars", 0x00000, charlayout1, 0, 16 ) /* 0-127 characters */
GFXDECODE_ENTRY( "bgchars", 0x00000, charlayout2, 128, 8 ) /* 128-255 background */
GFXDECODE_ENTRY( "sprites", 0x00000, spritelayout1, 0, 16 ) /* 0-127 normal sprites */
GFXDECODE_ENTRY( "sprites", 0x01000, spritelayout2, 0, 16 ) /* 0-127 large sprites */
GFXDECODE_END
static INTERRUPT_GEN( pbaction_interrupt )
{
cpu_set_input_line_and_vector(device, 0, HOLD_LINE, 0x02); /* the CPU is in Interrupt Mode 2 */
}
static MACHINE_DRIVER_START( pbaction )
/* basic machine hardware */
MDRV_CPU_ADD("maincpu", Z80, 4000000) /* 4 MHz? */
MDRV_CPU_PROGRAM_MAP(readmem,writemem)
MDRV_CPU_VBLANK_INT("screen", nmi_line_pulse)
MDRV_CPU_ADD("audiocpu", Z80, 3072000)
MDRV_CPU_PROGRAM_MAP(sound_readmem,sound_writemem)
MDRV_CPU_IO_MAP(sound_io_map,0)
MDRV_CPU_VBLANK_INT_HACK(pbaction_interrupt,2) /* ??? */
/* IRQs are caused by the main CPU */
/* video hardware */
MDRV_SCREEN_ADD("screen", RASTER)
MDRV_SCREEN_REFRESH_RATE(60)
MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
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("ay1", AY8910, 1500000)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MDRV_SOUND_ADD("ay2", AY8910, 1500000)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MDRV_SOUND_ADD("ay3", AY8910, 1500000)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MACHINE_DRIVER_END
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( pbaction )
ROM_REGION( 0x10000, "maincpu", 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, "audiocpu", 0 ) /* 64k for sound board */
ROM_LOAD( "a-e3.bin", 0x0000, 0x2000, CRC(0e53a91f) SHA1(df2827197cd55c3685e5ac8b26c20800623cb932) )
ROM_REGION( 0x06000, "fgchars", 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, "bgchars", 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, "sprites", 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, "maincpu", 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, "audiocpu", 0 ) /* 64k for sound board */
ROM_LOAD( "pba1.bin", 0x0000, 0x2000, CRC(8b69b933) SHA1(eb0762579d52ed9f5b1a002ffe7e517c59650e22) )
ROM_REGION( 0x10000, "cpu2", 0 ) /* 64k for a third Z80 (not emulated) */
ROM_LOAD( "pba17.bin", 0x0000, 0x4000, CRC(2734ae60) SHA1(4edcdfac1611c49c4f890609efbe8352b8161f8e) )
ROM_REGION( 0x06000, "fgchars", 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, "bgchars", 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, "sprites", 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, "maincpu", 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, "audiocpu", 0 ) /* 64k for sound board */
ROM_LOAD( "pba1.bin", 0x0000, 0x2000, CRC(8b69b933) SHA1(eb0762579d52ed9f5b1a002ffe7e517c59650e22) )
ROM_REGION( 0x06000, "fgchars", 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, "bgchars", 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, "sprites", 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 (cpu_get_pc(space->cpu) == 0xab80)
return 0;
return work_ram[0];
}
static DRIVER_INIT( pbactio3 )
{
int i;
UINT8 *rom = memory_region(machine, "maincpu");
/* 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(machine, "maincpu");
/* install a protection (?) workaround */
memory_install_read8_handler(cpu_get_address_space(machine->cpu[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 )