/*************************************************************************** Ms.Pac-Man/Galaga - 20 Year Reunion driver by Nicola Salmoria Notes: - There are four start buttons: the first two are for Ms. Pac-Man, the other two for Galaga. - To play Pac-Man instead of Ms. Pac-Man, insert coins then enter the following sequence: U U U D D D L R L R L. A sound will play and the ghost will change from red to pink. - Writes to the Z180 ASCI port: MS PAC-MAN/GALAGA arcade video system version 1.01 (c) 2000 Cosmodog, Ltd. > and it listens for incoming characters. TODO: - Starfield. - Convert to tilemaps & optimize video rendering, I was just too lazy to do it for now. - Check the ASCI interface, there probably is fully working debug code. - The timed interrupt is a kludge; it is supposed to be generated internally by the Z180, but the cpu core doesn't support that yet. - Correct CPU speed... Zilog says Z180 comes in 6, 8, 10, 20 & 33MHz. 20MHz is used as it "seems" right based on the music in Galaga ***************************************************************************/ #include "driver.h" #include "machine/eeprom.h" #include "cpu/z180/z180.h" #include "pacman.h" #include "sound/namco.h" #include "sound/dac.h" extern UINT8 *pacgal_charram,*pacgal_sprram; extern UINT8 *pacgal_videoram,*pacgal_videoram2; PALETTE_INIT( 20pacgal ); VIDEO_START( 20pacgal ); WRITE8_HANDLER( pacgal_lookup_w ); WRITE8_HANDLER( pacgal_active_game_w ); WRITE8_HANDLER( pacgal_videoram2_w ); WRITE8_HANDLER( pacgal_charram_w ); WRITE8_HANDLER( pacgal_sprram_w ); VIDEO_UPDATE( 20pacgal ); static struct EEPROM_interface eeprom_interface = { 7, /* address bits */ 8, /* data bits */ "*110", /* read command */ "*101", /* write command */ 0, /* erase command */ "*10000xxxxx", /* lock command */ "*10011xxxxx", /* unlock command */ }; static NVRAM_HANDLER( eeprom ) { if (read_or_write) EEPROM_save(file); else { EEPROM_init(&eeprom_interface); if (file) EEPROM_load(file); } } static READ8_HANDLER( eeprom_r ) { int res; /* bit 7 is EEPROM data */ res = EEPROM_read_bit() << 7; return res; } static WRITE8_HANDLER( eeprom_w ) { /* bit 7 is data */ /* bit 6 is clock (active high) */ /* bit 5 is cs (active low) */ EEPROM_write_bit(data & 0x80); EEPROM_set_cs_line((data & 0x20) ? CLEAR_LINE : ASSERT_LINE); EEPROM_set_clock_line((data & 0x40) ? ASSERT_LINE : CLEAR_LINE); } static WRITE8_HANDLER( irqack_w ) { int bit = data & 1; cpu_interrupt_enable(0,bit); if (!bit) cpunum_set_input_line( 0, 0, CLEAR_LINE ); } static WRITE8_HANDLER( flipscreen_w ) { flip_screen_set(data & 1); } static WRITE8_HANDLER( pacgal_dac_w ) { DAC_signed_data_w(0, data); } static WRITE8_HANDLER( coin_w ) { coin_counter_w(0,data & 1); } static ADDRESS_MAP_START( 20pacgal_map, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x00000, 0x03fff) AM_ROM AM_RANGE(0x08000, 0x09fff) AM_ROM AM_RANGE(0x0a000, 0x0ffff) AM_MIRROR(0x40000) AM_ROM AM_RANGE(0x10000, 0x3ffff) AM_ROM AM_RANGE(0x44000, 0x447ff) AM_RAM AM_BASE(&pacgal_videoram) // mspacman tilemap AM_RANGE(0x45040, 0x4505f) AM_WRITE(pacman_sound_w) AM_BASE(&namco_soundregs) AM_RANGE(0x44800, 0x45eff) AM_RAM AM_RANGE(0x45f00, 0x45fff) AM_WRITE(_20pacgal_wavedata_w) AM_BASE(&namco_wavedata) // sound wave data AM_RANGE(0x46000, 0x46fff) AM_WRITE(pacgal_charram_w) AM_BASE(&pacgal_charram) // char gfx data AM_RANGE(0x47100, 0x47100) AM_RAM // leftover from original Galaga code AM_RANGE(0x48000, 0x49fff) AM_ROM AM_BASE(&pacgal_videoram2) AM_RANGE(0x48000, 0x49fff) AM_WRITE(pacgal_videoram2_w) // ROM or galaga tilemap (banked) AM_RANGE(0x4c000, 0x4dfff) AM_WRITE(pacgal_sprram_w) AM_BASE(&pacgal_sprram) // sprite gfx data AM_RANGE(0x4e000, 0x4e17f) AM_WRITE(MWA8_RAM) AM_BASE(&spriteram) // sprite registers AM_RANGE(0x4ff00, 0x4ffff) AM_WRITE(pacgal_lookup_w) // sprite color lookup table ADDRESS_MAP_END static ADDRESS_MAP_START( 20pacgal_port, ADDRESS_SPACE_IO, 8 ) ADDRESS_MAP_FLAGS( AMEF_ABITS(8) ) AM_RANGE(0x00, 0x3f) AM_NOP /* Z180 internal registers */ AM_RANGE(0x40, 0x7f) AM_NOP /* Z180 internal registers */ AM_RANGE(0x80, 0x80) AM_READ(input_port_0_r) AM_RANGE(0x81, 0x81) AM_READ(input_port_1_r) AM_RANGE(0x82, 0x82) AM_READ(input_port_2_r) AM_RANGE(0x80, 0x80) AM_WRITE(watchdog_reset_w) AM_RANGE(0x81, 0x81) AM_WRITE(MWA8_NOP) // ??? pulsed by the timer irq AM_RANGE(0x82, 0x82) AM_WRITE(irqack_w) AM_RANGE(0x85, 0x86) AM_WRITE(MWA8_NOP) // stars: rng seed (lo/hi) AM_RANGE(0x87, 0x87) AM_READWRITE(eeprom_r, eeprom_w) AM_RANGE(0x88, 0x88) AM_WRITE(pacgal_active_game_w) AM_RANGE(0x89, 0x89) AM_WRITE(pacgal_dac_w) AM_RANGE(0x8a, 0x8a) AM_WRITE(MWA8_NOP) // stars: bits 3-4 = active set; bit 5 = enable AM_RANGE(0x8b, 0x8b) AM_WRITE(flipscreen_w) AM_RANGE(0x8f, 0x8f) AM_WRITE(coin_w) // coin counter ADDRESS_MAP_END INPUT_PORTS_START( 20pacgal ) PORT_START PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_START PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_COCKTAIL PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_COCKTAIL PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_COCKTAIL PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_COCKTAIL PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START3 ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START4 ) PORT_START PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME( DEF_STR( Service_Mode )) PORT_CODE(KEYCODE_F2) INPUT_PORTS_END static const gfx_layout charlayout = { 8,8, 256, 2, { 0, 4 }, { 8*8+0, 8*8+1, 8*8+2, 8*8+3, 0, 1, 2, 3 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, 16*8 }; static const gfx_layout spritelayout = { 16,16, 128, 2, { 0, 1 }, { 0*2, 1*2, 2*2, 3*2, 4*2, 5*2, 6*2, 7*2, 8*2, 9*2, 10*2, 11*2, 12*2, 13*2, 14*2, 15*2 }, { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32, 8*32, 9*32, 10*32, 11*32, 12*32, 13*32, 14*32, 15*32 }, 16*32 }; static GFXDECODE_START( 20pacgal ) /* the game dynamically modifies these */ GFXDECODE_ENTRY( 0, 0, charlayout, 0, 64 ) GFXDECODE_ENTRY( 0, 0, spritelayout, 0, 64 ) GFXDECODE_END static struct namco_interface namco_interface = { 3, /* number of voices */ -1, /* memory region */ }; static MACHINE_DRIVER_START( 20pacgal ) /* basic machine hardware */ MDRV_CPU_ADD(Z180,20000000) /* 20MHz ??? Needs to be verified! */ MDRV_CPU_PROGRAM_MAP(20pacgal_map,0) MDRV_CPU_IO_MAP(20pacgal_port,0) MDRV_CPU_VBLANK_INT(irq0_line_assert,1) MDRV_SCREEN_REFRESH_RATE(60) MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION) MDRV_NVRAM_HANDLER(eeprom) /* video hardware */ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MDRV_SCREEN_SIZE(36*8, 28*8) MDRV_SCREEN_VISIBLE_AREA(0*8, 36*8-1, 0*8, 28*8-1) MDRV_GFXDECODE(20pacgal) MDRV_PALETTE_LENGTH(0x1000) MDRV_COLORTABLE_LENGTH(0x100) MDRV_PALETTE_INIT(20pacgal) MDRV_VIDEO_START(20pacgal) MDRV_VIDEO_UPDATE(20pacgal) /* sound hardware */ MDRV_SPEAKER_STANDARD_MONO("mono") MDRV_SOUND_ADD(NAMCO, 18432000/6/32) MDRV_SOUND_CONFIG(namco_interface) MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MDRV_SOUND_ADD(DAC, 0) MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MACHINE_DRIVER_END /*************************************************************************** Game driver(s) ***************************************************************************/ ROM_START( 20pacgal ) ROM_REGION( 0x100000, REGION_CPU1, 0 ) /* 1024k for Z180 address space */ ROM_LOAD( "20th_101.u13", 0x00000, 0x40000, CRC(77159582) SHA1(c05e005a941cbdc806dcd76b315069362c792a72) ) ROM_REGION( 0x8000, REGION_PROMS, 0 ) /* palette */ ROM_LOAD( "20th_101.u14", 0x0000, 0x8000, CRC(c19d9ad0) SHA1(002581fbc2c32cdf7cfb0b0f64061591a462ec14) ) ROM_END GAME( 2000, 20pacgal, 0, 20pacgal, 20pacgal, 0, ROT90, "Namco", "Ms. Pac-Man/Galaga - 20 Year Reunion", GAME_IMPERFECT_GRAPHICS )