diff options
Diffstat (limited to 'src/mame/drivers/20pacgal.c')
-rw-r--r-- | src/mame/drivers/20pacgal.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/src/mame/drivers/20pacgal.c b/src/mame/drivers/20pacgal.c new file mode 100644 index 00000000000..9a2fb76115c --- /dev/null +++ b/src/mame/drivers/20pacgal.c @@ -0,0 +1,289 @@ +/*************************************************************************** + +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 + + + +static 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 ) |