/*************************************************************************** Atari Bad Lands hardware driver by Aaron Giles Games supported: * Bad Lands (1989) Known bugs: * none at this time **************************************************************************** Memory map **************************************************************************** ======================================================================== MAIN CPU ======================================================================== 000000-03FFFF R xxxxxxxx xxxxxxxx Program ROM FC0000 R -------x -------- Sound command buffer full FC0000 W -------- -------- Sound CPU reset FD0000-FD1FFF R/W -------- xxxxxxxx EEPROM FE0000 W -------- -------- Watchdog reset FE2000 W -------- -------- VBLANK IRQ acknowledge FE4000 R -------- xxxx---- Switch inputs R -------- x------- (Self test) R -------- -x------ (VBLANK) R -------- --x----- (Player 2 button) R -------- ---x---- (Player 1 button) FE6000 R -------- xxxxxxxx Player 1 steering FE6002 R -------- xxxxxxxx Player 2 steering FE6004 R -------- xxxxxxxx Player 1 pedal FE6006 R -------- xxxxxxxx Player 2 pedal FE8000 W xxxxxxxx -------- Sound command write FEA000 R xxxxxxxx -------- Sound response read FEC000 W -------- -------x Playfield tile bank select FEE000 W -------- -------- EEPROM enable FFC000-FFC0FF R/W xxxxxxxx xxxxxxxx Playfield palette RAM (128 entries) R/W x------- -------- (RGB 1 LSB) R/W -xxxxx-- -------- (Red 5 MSB) R/W ------xx xxx----- (Green 5 MSB) R/W -------- ---xxxxx (Blue 5 MSB) FFC100-FFC1FF R/W xxxxxxxx xxxxxxxx Motion object palette RAM (128 entries) FFC200-FFC3FF R/W xxxxxxxx xxxxxxxx Extra palette RAM (256 entries) FFE000-FFEFFF R/W xxxxxxxx xxxxxxxx Playfield RAM (64x32 tiles) R/W xxx----- -------- (Palette select) R/W ---x---- -------- (Tile bank select) R/W ----xxxx xxxxxxxx (Tile index) FFF000-FFFFFF R/W xxxxxxxx xxxxxxxx Motion object RAM (32 entries x 4 words) R/W ----xxxx xxxxxxxx (0: Tile index) R/W xxxxxxxx x------- (1: Y position) R/W -------- ----xxxx (1: Number of Y tiles - 1) R/W xxxxxxxx x------- (3: X position) R/W -------- ----x--- (3: Priority) R/W -------- -----xxx (3: Palette select) ======================================================================== Interrupts: IRQ1 = VBLANK IRQ2 = sound CPU communications ======================================================================== ======================================================================== SOUND CPU (based on JSA II, but implemented onboard) ======================================================================== 0000-1FFF R/W xxxxxxxx Program RAM 2000-2001 R/W xxxxxxxx YM2151 communications 2802 R xxxxxxxx Sound command read 2804 R xxxx--xx Status input R x------- (Self test) R -x------ (Sound command buffer full) R --x----- (Sound response buffer full) R ---x---- (Self test) R ------xx (Coin inputs) 2806 R/W -------- IRQ acknowledge 2A02 W xxxxxxxx Sound response write 2A04 W xxxx---x Sound control W xx------ (ROM bank select) W --xx---- (Coin counters) W -------x (YM2151 reset) 3000-3FFF R xxxxxxxx Banked ROM 4000-FFFF R xxxxxxxx Program ROM ======================================================================== Interrupts: IRQ = timed interrupt ORed with YM2151 interrupt NMI = latch on sound command ======================================================================== ****************************************************************************/ #include "driver.h" #include "machine/atarigen.h" #include "badlands.h" #include "sound/2151intf.h" /************************************* * * Statics * *************************************/ static UINT8 pedal_value[2]; static UINT8 *bank_base; static UINT8 *bank_source_data; /************************************* * * Initialization * *************************************/ static void update_interrupts(void) { int newstate = 0; if (atarigen_video_int_state) newstate = 1; if (atarigen_sound_int_state) newstate = 2; if (newstate) cpunum_set_input_line(0, newstate, ASSERT_LINE); else cpunum_set_input_line(0, 7, CLEAR_LINE); } static void scanline_update(running_machine *machine, int scrnum, int scanline) { /* sound IRQ is on 32V */ if (scanline & 32) atarigen_6502_irq_ack_r(0); else if (!(readinputport(0) & 0x40)) atarigen_6502_irq_gen(); } static MACHINE_RESET( badlands ) { pedal_value[0] = pedal_value[1] = 0x80; atarigen_eeprom_reset(); atarigen_interrupt_reset(update_interrupts); atarigen_scanline_timer_reset(0, scanline_update, 32); atarigen_sound_io_reset(1); memcpy(bank_base, &bank_source_data[0x0000], 0x1000); } /************************************* * * Interrupt handling * *************************************/ static INTERRUPT_GEN( vblank_int ) { int pedal_state = input_port_4_r(0); int i; /* update the pedals once per frame */ for (i = 0; i < 2; i++) { pedal_value[i]--; if (pedal_state & (1 << i)) pedal_value[i]++; } atarigen_video_int_gen(); } /************************************* * * I/O read dispatch * *************************************/ static READ16_HANDLER( sound_busy_r ) { int temp = 0xfeff; if (atarigen_cpu_to_sound_ready) temp ^= 0x0100; return temp; } static READ16_HANDLER( pedal_0_r ) { return pedal_value[0]; } static READ16_HANDLER( pedal_1_r ) { return pedal_value[1]; } /************************************* * * Audio I/O handlers * *************************************/ static READ8_HANDLER( audio_io_r ) { int result = 0xff; switch (offset & 0x206) { case 0x000: /* n/c */ logerror("audio_io_r: Unknown read at %04X\n", offset & 0x206); break; case 0x002: /* /RDP */ result = atarigen_6502_sound_r(offset); break; case 0x004: /* /RDIO */ /* 0x80 = self test 0x40 = NMI line state (active low) 0x20 = sound output full 0x10 = self test 0x08 = +5V 0x04 = +5V 0x02 = coin 2 0x01 = coin 1 */ result = readinputport(3); if (!(readinputport(0) & 0x0080)) result ^= 0x90; if (atarigen_cpu_to_sound_ready) result ^= 0x40; if (atarigen_sound_to_cpu_ready) result ^= 0x20; result ^= 0x10; break; case 0x006: /* /IRQACK */ atarigen_6502_irq_ack_r(0); break; case 0x200: /* /VOICE */ case 0x202: /* /WRP */ case 0x204: /* /WRIO */ case 0x206: /* /MIX */ logerror("audio_io_r: Unknown read at %04X\n", offset & 0x206); break; } return result; } static WRITE8_HANDLER( audio_io_w ) { switch (offset & 0x206) { case 0x000: /* n/c */ case 0x002: /* /RDP */ case 0x004: /* /RDIO */ logerror("audio_io_w: Unknown write (%02X) at %04X\n", data & 0xff, offset & 0x206); break; case 0x006: /* /IRQACK */ atarigen_6502_irq_ack_r(0); break; case 0x200: /* n/c */ case 0x206: /* n/c */ break; case 0x202: /* /WRP */ atarigen_6502_sound_w(offset, data); break; case 0x204: /* WRIO */ /* 0xc0 = bank address 0x20 = coin counter 2 0x10 = coin counter 1 0x08 = n/c 0x04 = n/c 0x02 = n/c 0x01 = YM2151 reset (active low) */ /* update the bank */ memcpy(bank_base, &bank_source_data[0x1000 * ((data >> 6) & 3)], 0x1000); break; } } /************************************* * * Main CPU memory handlers * *************************************/ static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 16 ) AM_RANGE(0x000000, 0x03ffff) AM_ROM AM_RANGE(0xfc0000, 0xfc1fff) AM_READWRITE(sound_busy_r, atarigen_sound_reset_w) AM_RANGE(0xfd0000, 0xfd1fff) AM_READWRITE(atarigen_eeprom_r, atarigen_eeprom_w) AM_BASE(&atarigen_eeprom) AM_SIZE(&atarigen_eeprom_size) AM_RANGE(0xfe0000, 0xfe1fff) AM_WRITE(watchdog_reset16_w) AM_RANGE(0xfe2000, 0xfe3fff) AM_WRITE(atarigen_video_int_ack_w) AM_RANGE(0xfe4000, 0xfe5fff) AM_READ(input_port_0_word_r) AM_RANGE(0xfe6000, 0xfe6001) AM_READ(input_port_1_word_r) AM_RANGE(0xfe6002, 0xfe6003) AM_READ(input_port_2_word_r) AM_RANGE(0xfe6004, 0xfe6005) AM_READ(pedal_0_r) AM_RANGE(0xfe6006, 0xfe6007) AM_READ(pedal_1_r) AM_RANGE(0xfe8000, 0xfe9fff) AM_WRITE(atarigen_sound_upper_w) AM_RANGE(0xfea000, 0xfebfff) AM_READ(atarigen_sound_upper_r) AM_RANGE(0xfec000, 0xfedfff) AM_WRITE(badlands_pf_bank_w) AM_RANGE(0xfee000, 0xfeffff) AM_WRITE(atarigen_eeprom_enable_w) AM_RANGE(0xffc000, 0xffc3ff) AM_READWRITE(MRA16_RAM, atarigen_expanded_666_paletteram_w) AM_BASE(&paletteram16) AM_RANGE(0xffe000, 0xffefff) AM_READWRITE(MRA16_RAM, atarigen_playfield_w) AM_BASE(&atarigen_playfield) AM_RANGE(0xfff000, 0xfff1ff) AM_READWRITE(MRA16_RAM, atarimo_0_spriteram_expanded_w) AM_BASE(&atarimo_0_spriteram) AM_RANGE(0xfff200, 0xffffff) AM_RAM ADDRESS_MAP_END /************************************* * * Sound CPU memory handlers * *************************************/ static ADDRESS_MAP_START( audio_map, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x0000, 0x1fff) AM_RAM AM_RANGE(0x2000, 0x2000) AM_READWRITE(YM2151_status_port_0_r, YM2151_register_port_0_w) AM_RANGE(0x2000, 0x2001) AM_READWRITE(YM2151_status_port_0_r, YM2151_data_port_0_w) AM_RANGE(0x2800, 0x2bff) AM_READWRITE(audio_io_r, audio_io_w) AM_RANGE(0x3000, 0xffff) AM_ROM ADDRESS_MAP_END /************************************* * * Port definitions * *************************************/ INPUT_PORTS_START( badlands ) PORT_START /* fe4000 */ PORT_BIT( 0x000f, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_START2 ) PORT_BIT( 0x0040, IP_ACTIVE_HIGH, IPT_VBLANK ) PORT_SERVICE( 0x0080, IP_ACTIVE_LOW ) PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START /* fe6000 */ PORT_BIT( 0x00ff, 0, IPT_DIAL ) PORT_SENSITIVITY(50) PORT_KEYDELTA(10) PORT_PLAYER(1) PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START /* fe6002 */ PORT_BIT( 0x00ff, 0, IPT_DIAL ) PORT_SENSITIVITY(50) PORT_KEYDELTA(10) PORT_PLAYER(2) PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START /* audio port */ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 ) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN3 ) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_SPECIAL ) /* self test */ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_SPECIAL ) /* response buffer full */ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SPECIAL ) /* command buffer full */ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL ) /* self test */ PORT_START /* fake for pedals */ PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_BIT( 0x0002, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0xfffe, IP_ACTIVE_HIGH, IPT_UNUSED ) INPUT_PORTS_END /************************************* * * Graphics definitions * *************************************/ static const gfx_layout pflayout = { 8,8, RGN_FRAC(1,1), 4, { 0, 1, 2, 3 }, { 0, 4, 8, 12, 16, 20, 24, 28 }, { 0*8, 4*8, 8*8, 12*8, 16*8, 20*8, 24*8, 28*8 }, 32*8 }; static const gfx_layout molayout = { 16,8, RGN_FRAC(1,1), 4, { 0, 1, 2, 3 }, { 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60 }, { 0*8, 8*8, 16*8, 24*8, 32*8, 40*8, 48*8, 56*8 }, 64*8 }; static GFXDECODE_START( badlands ) GFXDECODE_ENTRY( REGION_GFX1, 0, pflayout, 0, 8 ) GFXDECODE_ENTRY( REGION_GFX2, 0, molayout, 128, 8 ) GFXDECODE_END /************************************* * * Machine driver * *************************************/ static MACHINE_DRIVER_START( badlands ) /* basic machine hardware */ MDRV_CPU_ADD(M68000, ATARI_CLOCK_14MHz/2) MDRV_CPU_PROGRAM_MAP(main_map,0) MDRV_CPU_VBLANK_INT(vblank_int,1) MDRV_CPU_ADD(M6502, ATARI_CLOCK_14MHz/8) MDRV_CPU_PROGRAM_MAP(audio_map,0) MDRV_MACHINE_RESET(badlands) MDRV_NVRAM_HANDLER(atarigen) /* video hardware */ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER | VIDEO_UPDATE_BEFORE_VBLANK) MDRV_GFXDECODE(badlands) MDRV_PALETTE_LENGTH(256) MDRV_SCREEN_ADD("main", 0) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) /* note: these parameters are from published specs, not derived */ /* the board uses an SOS-2 chip to generate video signals */ MDRV_SCREEN_RAW_PARAMS(ATARI_CLOCK_14MHz/2, 456, 0, 336, 262, 0, 240) MDRV_VIDEO_START(badlands) MDRV_VIDEO_UPDATE(badlands) /* sound hardware */ MDRV_SPEAKER_STANDARD_MONO("mono") MDRV_SOUND_ADD(YM2151, ATARI_CLOCK_14MHz/4) MDRV_SOUND_ROUTE(0, "mono", 0.30) MDRV_SOUND_ROUTE(1, "mono", 0.30) MACHINE_DRIVER_END /************************************* * * ROM definition(s) * *************************************/ ROM_START( badlands ) ROM_REGION( 0x40000, REGION_CPU1, 0 ) /* 4*64k for 68000 code */ ROM_LOAD16_BYTE( "136074-1008.20f", 0x00000, 0x10000, CRC(a3da5774) SHA1(5ab1eb61d25594b2d7c40400cb57e7f47a717598) ) ROM_LOAD16_BYTE( "136074-1006.27f", 0x00001, 0x10000, CRC(aa03b4f3) SHA1(5eda60c715ffcefd4ad34bdb90579e8671dc384a) ) ROM_LOAD16_BYTE( "136074-1009.17f", 0x20000, 0x10000, CRC(0e2e807f) SHA1(5b61de066dca12c44335aa68a13c821845657866) ) ROM_LOAD16_BYTE( "136074-1007.24f", 0x20001, 0x10000, CRC(99a20c2c) SHA1(9b0a5a5dafb8816e72330d302c60339b600b49a8) ) ROM_REGION( 0x14000, REGION_CPU2, 0 ) /* 64k for 6502 code */ ROM_LOAD( "136074-1018.9c", 0x10000, 0x4000, CRC(a05fd146) SHA1(d97abbcf7897ca720cc18ff3a323f41cd3b23c34) ) ROM_CONTINUE( 0x04000, 0xc000 ) ROM_REGION( 0x60000, REGION_GFX1, ROMREGION_DISPOSE | ROMREGION_INVERT ) ROM_LOAD( "136074-1012.4n", 0x000000, 0x10000, CRC(5d124c6c) SHA1(afebaaf90b3751f5e873fc4c45f1d5385ef86a6e) ) /* playfield */ ROM_LOAD( "136074-1013.2n", 0x010000, 0x10000, CRC(b1ec90d6) SHA1(8d4c7db8e1bf9c050f5869eb38fa573867fdc12b) ) ROM_LOAD( "136074-1014.4s", 0x020000, 0x10000, CRC(248a6845) SHA1(086ef0840b889e790ce3fcd09f98589aae932456) ) ROM_LOAD( "136074-1015.2s", 0x030000, 0x10000, CRC(792296d8) SHA1(833cdb968064151ca77bb3dbe416ff7127a12de4) ) ROM_LOAD( "136074-1016.4u", 0x040000, 0x10000, CRC(878f7c66) SHA1(31159bea5d6aac8100fca8f3860220b97d63e72e) ) ROM_LOAD( "136074-1017.2u", 0x050000, 0x10000, CRC(ad0071a3) SHA1(472b197e5d320b3424d8a8d8c051b1023a07ae08) ) ROM_REGION( 0x30000, REGION_GFX2, ROMREGION_DISPOSE | ROMREGION_INVERT ) ROM_LOAD( "136074-1010.14r", 0x000000, 0x10000, CRC(c15f629e) SHA1(944e3479dce6e420cf9a3f4c1438c5ca66e5cb97) ) /* mo */ ROM_LOAD( "136074-1011.10r", 0x010000, 0x10000, CRC(fb0b6717) SHA1(694ab0f04d673682831a24027757d4b3c40a4e0e) ) ROM_LOAD( "136074-1019.14t", 0x020000, 0x10000, CRC(0e26bff6) SHA1(ee018dd37a27c7e7c16a57ea0d32aeb9cdf26bb4) ) ROM_REGION( 0x0800, REGION_PLDS, ROMREGION_DISPOSE ) ROM_LOAD( "gal16v8-1001.26c", 0x0000, 0x0117, CRC(04c3be6a) SHA1(f027834e652f3ff778b09c3754294b303f9ed826) ) ROM_LOAD( "gal16v8-1002.21r", 0x0200, 0x0117, CRC(f68bf41d) SHA1(72edd6d0f5d55d39c0020f384149de7ac964f273) ) ROM_LOAD( "gal16v8-1003.16s", 0x0400, 0x0117, CRC(a288bbd0) SHA1(62f5900ac88ffb335257f58d892492f370805498) ) ROM_LOAD( "gal16v8-1005.12e", 0x0600, 0x0117, CRC(9df77c79) SHA1(52c1c190b80db9b9bc43ce6eefd5f37ac16e590c) ) ROM_END /************************************* * * Driver initialization * *************************************/ static DRIVER_INIT( badlands ) { atarigen_eeprom_default = NULL; /* initialize the audio system */ bank_base = &memory_region(REGION_CPU2)[0x03000]; bank_source_data = &memory_region(REGION_CPU2)[0x10000]; } /************************************* * * Game driver(s) * *************************************/ GAME( 1989, badlands, 0, badlands, badlands, badlands, ROT0, "Atari Games", "Bad Lands", 0 )