/*************************************************************************** Bally/Midway Jr. Pac-Man Games supported: * Jr. Pac-Man Known issues: * none **************************************************************************** Jr. Pac Man memory map (preliminary) 0000-3fff ROM 4000-47ff Video RAM (also color RAM) 4800-4fff RAM 8000-dfff ROM memory mapped ports: read: 5000 P1 5040 P2 5080 DSW * * IN0 (all bits are inverted) * bit 7 : CREDIT * bit 6 : COIN 2 * bit 5 : COIN 1 * bit 4 : RACK TEST * bit 3 : DOWN player 1 * bit 2 : RIGHT player 1 * bit 1 : LEFT player 1 * bit 0 : UP player 1 * * * IN1 (all bits are inverted) * bit 7 : TABLE or UPRIGHT cabinet select (1 = UPRIGHT) * bit 6 : START 2 * bit 5 : START 1 * bit 4 : TEST SWITCH * bit 3 : DOWN player 2 (TABLE only) * bit 2 : RIGHT player 2 (TABLE only) * bit 1 : LEFT player 2 (TABLE only) * bit 0 : UP player 2 (TABLE only) * * * DSW1 (all bits are inverted) * bit 7 : ? * bit 6 : difficulty level * 1 = Normal 0 = Harder * bit 5 :\ bonus pac at xx000 pts * bit 4 :/ 00 = 10000 01 = 15000 10 = 20000 11 = 30000 * bit 3 :\ nr of lives * bit 2 :/ 00 = 1 01 = 2 10 = 3 11 = 5 * bit 1 :\ play mode * bit 0 :/ 00 = free play 01 = 1 coin 1 credit * 10 = 1 coin 2 credits 11 = 2 coins 1 credit * write: 4ff2-4ffd 6 pairs of two bytes: the first byte contains the sprite image number (bits 2-7), Y flip (bit 0), X flip (bit 1); the second byte the color 5000 interrupt enable 5001 sound enable 5002 unused 5003 flip screen 5004 unused 5005 unused 5006 unused 5007 coin counter 5040-5044 sound voice 1 accumulator (nibbles) (used by the sound hardware only) 5045 sound voice 1 waveform (nibble) 5046-5049 sound voice 2 accumulator (nibbles) (used by the sound hardware only) 504a sound voice 2 waveform (nibble) 504b-504e sound voice 3 accumulator (nibbles) (used by the sound hardware only) 504f sound voice 3 waveform (nibble) 5050-5054 sound voice 1 frequency (nibbles) 5055 sound voice 1 volume (nibble) 5056-5059 sound voice 2 frequency (nibbles) 505a sound voice 2 volume (nibble) 505b-505e sound voice 3 frequency (nibbles) 505f sound voice 3 volume (nibble) 5062-506d Sprite coordinates, x/y pairs for 6 sprites 5070 palette bank 5071 colortable bank 5073 background priority over sprites 5074 char gfx bank 5075 sprite gfx bank 5080 scroll 50c0 Watchdog reset I/O ports: OUT on port $0 sets the interrupt vector ***************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "includes/pacman.h" #include "sound/namco.h" class jrpacman_state : public pacman_state { public: jrpacman_state(const machine_config &mconfig, device_type type, const char *tag) : pacman_state(mconfig, type, tag) { } }; static WRITE8_HANDLER( jrpacman_interrupt_vector_w ) { device_set_input_line_vector(space->machine().device("maincpu"), 0, data); cputag_set_input_line(space->machine(), "maincpu", 0, CLEAR_LINE); } /************************************* * * Main CPU memory handlers * *************************************/ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8 ) AM_RANGE(0x0000, 0x3fff) AM_ROM AM_RANGE(0x4000, 0x47ff) AM_RAM_WRITE(jrpacman_videoram_w) AM_BASE_MEMBER(jrpacman_state, m_videoram) AM_RANGE(0x4800, 0x4fef) AM_RAM AM_RANGE(0x4ff0, 0x4fff) AM_RAM AM_BASE_SIZE_GENERIC(spriteram) AM_RANGE(0x5000, 0x503f) AM_READ_PORT("P1") AM_RANGE(0x5000, 0x5000) AM_WRITE(interrupt_enable_w) AM_RANGE(0x5001, 0x5001) AM_DEVWRITE("namco", pacman_sound_enable_w) AM_RANGE(0x5003, 0x5003) AM_WRITE(pacman_flipscreen_w) AM_RANGE(0x5040, 0x507f) AM_READ_PORT("P2") AM_RANGE(0x5040, 0x505f) AM_DEVWRITE("namco", pacman_sound_w) AM_RANGE(0x5060, 0x506f) AM_WRITEONLY AM_BASE_GENERIC(spriteram2) AM_RANGE(0x5070, 0x5070) AM_WRITE(pengo_palettebank_w) AM_RANGE(0x5071, 0x5071) AM_WRITE(pengo_colortablebank_w) AM_RANGE(0x5073, 0x5073) AM_WRITE(jrpacman_bgpriority_w) AM_RANGE(0x5074, 0x5074) AM_WRITE(jrpacman_charbank_w) AM_RANGE(0x5075, 0x5075) AM_WRITE(jrpacman_spritebank_w) AM_RANGE(0x5080, 0x50bf) AM_READ_PORT("DSW") AM_RANGE(0x5080, 0x5080) AM_WRITE(jrpacman_scroll_w) AM_RANGE(0x50c0, 0x50c0) AM_WRITENOP AM_RANGE(0x8000, 0xdfff) AM_ROM ADDRESS_MAP_END static ADDRESS_MAP_START( port_map, AS_IO, 8 ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0, 0) AM_WRITE(jrpacman_interrupt_vector_w) ADDRESS_MAP_END /************************************* * * Port definitions * *************************************/ static INPUT_PORTS_START( jrpacman ) PORT_START("P1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_DIPNAME( 0x10, 0x10, "Rack Test (Cheat)" ) PORT_CODE(KEYCODE_F1) PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN3 ) PORT_START("P2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY PORT_COCKTAIL PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_COCKTAIL PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_COCKTAIL PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_COCKTAIL PORT_SERVICE( 0x10, IP_ACTIVE_LOW ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Cabinet ) ) PORT_DIPSETTING( 0x80, DEF_STR( Upright ) ) PORT_DIPSETTING( 0x00, DEF_STR( Cocktail ) ) PORT_START("DSW") PORT_DIPNAME( 0x03, 0x01, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW1:1,2") PORT_DIPSETTING( 0x03, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0x01, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x02, DEF_STR( 1C_2C ) ) PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) ) PORT_DIPNAME( 0x0c, 0x08, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:3,4") PORT_DIPSETTING( 0x00, "1" ) PORT_DIPSETTING( 0x04, "2" ) PORT_DIPSETTING( 0x08, "3" ) PORT_DIPSETTING( 0x0c, "5" ) PORT_DIPNAME( 0x30, 0x00, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW1:5,6") PORT_DIPSETTING( 0x00, "10000" ) PORT_DIPSETTING( 0x10, "15000" ) PORT_DIPSETTING( 0x20, "20000" ) PORT_DIPSETTING( 0x30, "30000" ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW1:7") PORT_DIPSETTING( 0x40, DEF_STR( Normal ) ) PORT_DIPSETTING( 0x00, DEF_STR( Hard ) ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:8") PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) INPUT_PORTS_END /************************************* * * Graphics layouts * *************************************/ static const gfx_layout tilelayout = { 8,8, RGN_FRAC(1,2), 2, { 0, 4 }, { STEP4(8*8,1), STEP4(0*8,1) }, { STEP8(0*8,8) }, 16*8 }; static const gfx_layout spritelayout = { 16,16, RGN_FRAC(1,2), 2, { 0, 4 }, { STEP4(8*8,1), STEP4(16*8,1), STEP4(24*8,1), STEP4(0*8,1) }, { STEP8(0*8,8), STEP8(32*8,8) }, 64*8 }; static GFXDECODE_START( jrpacman ) GFXDECODE_ENTRY( "gfx1", 0x0000, tilelayout, 0, 128 ) GFXDECODE_ENTRY( "gfx1", 0x2000, spritelayout, 0, 128 ) GFXDECODE_END /************************************* * * Sound interfaces * *************************************/ static const namco_interface namco_config = { 3, /* number of voices */ 0 /* stereo */ }; /************************************* * * Machine drivers * *************************************/ static MACHINE_CONFIG_START( jrpacman, jrpacman_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", Z80, 18432000/6) /* 3.072 MHz */ MCFG_CPU_PROGRAM_MAP(main_map) MCFG_CPU_IO_MAP(port_map) MCFG_CPU_VBLANK_INT("screen", irq0_line_hold) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60.606060) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MCFG_SCREEN_SIZE(36*8, 28*8) MCFG_SCREEN_VISIBLE_AREA(0*8, 36*8-1, 0*8, 28*8-1) MCFG_SCREEN_UPDATE(pacman) MCFG_GFXDECODE(jrpacman) MCFG_PALETTE_LENGTH(128*4) MCFG_PALETTE_INIT(pacman) MCFG_VIDEO_START(jrpacman) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("namco", NAMCO, 3072000/32) MCFG_SOUND_CONFIG(namco_config) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MACHINE_CONFIG_END /************************************* * * ROM definitions * *************************************/ ROM_START( jrpacman ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "jrp8d.bin", 0x0000, 0x2000, CRC(e3fa972e) SHA1(5ea34621213c649ca2848ab31aab2cbe751723d4) ) ROM_LOAD( "jrp8e.bin", 0x2000, 0x2000, CRC(ec889e94) SHA1(8294e9e79f8fd19a419431fa690e6ac4a1302f58) ) ROM_LOAD( "jrp8h.bin", 0x8000, 0x2000, CRC(35f1fc6e) SHA1(b84b34560b9aae18b24274712b052283faa01730) ) ROM_LOAD( "jrp8j.bin", 0xa000, 0x2000, CRC(9737099e) SHA1(07d912a61824323c8fc1b8bd0da89172d4f70b91) ) ROM_LOAD( "jrp8k.bin", 0xc000, 0x2000, CRC(5252dd97) SHA1(18bd4d5381656120e4242811006c20776774de4d) ) ROM_REGION( 0x4000, "gfx1", 0 ) ROM_LOAD( "jrp2c.bin", 0x0000, 0x2000, CRC(0527ff9b) SHA1(37fe3176b0d125b7d629e108e7ebdc1196e4a132) ) /* tiles (bank 1 & 2) */ ROM_LOAD( "jrp2e.bin", 0x2000, 0x2000, CRC(73477193) SHA1(f00a488958ea0438642d345693787bdf771219ad) ) /* sprites (bank 1 & 2) */ ROM_REGION( 0x0120, "proms", 0 ) ROM_LOAD_NIB_LOW ( "jrprom.9e", 0x0000, 0x0100, CRC(029d35c4) SHA1(d9aa2dc442e9ac36cf3c346b9fb1aa745eaf3cb8) ) /* color palette (low bits) */ ROM_LOAD_NIB_HIGH( "jrprom.9f", 0x0000, 0x0100, CRC(eee34a79) SHA1(7561f8ccab2af85c111af6a02af6986eb67503e5) ) /* color palette (high bits) */ ROM_LOAD( "jrprom.9p", 0x0020, 0x0100, CRC(9f6ea9d8) SHA1(62cf15513934d34641433c891a7f73bef82e2fb1) ) /* color lookup table */ ROM_REGION( 0x0200, "namco", 0 ) ROM_LOAD( "jrprom.7p", 0x0000, 0x0100, CRC(a9cc86bf) SHA1(bbcec0570aeceb582ff8238a4bc8546a23430081) ) /* waveform */ ROM_LOAD( "jrprom.5s", 0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */ ROM_END /************************************* * * Driver initialization * *************************************/ static DRIVER_INIT( jrpacman ) { /* The encryption PALs garble bits 0, 2 and 7 of the ROMs. The encryption */ /* scheme is complex (basically it's a state machine) and can only be */ /* faithfully emulated at run time. To avoid the performance hit that would */ /* cause, here we have a table of the values which must be XORed with */ /* each memory region to obtain the decrypted bytes. */ /* Decryption table provided by David Caldwell (david@indigita.com) */ /* For an accurate reproduction of the encryption, see jrcrypt.c */ static const struct { int count; int value; } table[] = { { 0x00C1, 0x00 },{ 0x0002, 0x80 },{ 0x0004, 0x00 },{ 0x0006, 0x80 }, { 0x0003, 0x00 },{ 0x0002, 0x80 },{ 0x0009, 0x00 },{ 0x0004, 0x80 }, { 0x9968, 0x00 },{ 0x0001, 0x80 },{ 0x0002, 0x00 },{ 0x0001, 0x80 }, { 0x0009, 0x00 },{ 0x0002, 0x80 },{ 0x0009, 0x00 },{ 0x0001, 0x80 }, { 0x00AF, 0x00 },{ 0x000E, 0x04 },{ 0x0002, 0x00 },{ 0x0004, 0x04 }, { 0x001E, 0x00 },{ 0x0001, 0x80 },{ 0x0002, 0x00 },{ 0x0001, 0x80 }, { 0x0002, 0x00 },{ 0x0002, 0x80 },{ 0x0009, 0x00 },{ 0x0002, 0x80 }, { 0x0009, 0x00 },{ 0x0002, 0x80 },{ 0x0083, 0x00 },{ 0x0001, 0x04 }, { 0x0001, 0x01 },{ 0x0001, 0x00 },{ 0x0002, 0x05 },{ 0x0001, 0x00 }, { 0x0003, 0x04 },{ 0x0003, 0x01 },{ 0x0002, 0x00 },{ 0x0001, 0x04 }, { 0x0003, 0x01 },{ 0x0003, 0x00 },{ 0x0003, 0x04 },{ 0x0001, 0x01 }, { 0x002E, 0x00 },{ 0x0078, 0x01 },{ 0x0001, 0x04 },{ 0x0001, 0x05 }, { 0x0001, 0x00 },{ 0x0001, 0x01 },{ 0x0001, 0x04 },{ 0x0002, 0x00 }, { 0x0001, 0x01 },{ 0x0001, 0x04 },{ 0x0002, 0x00 },{ 0x0001, 0x01 }, { 0x0001, 0x04 },{ 0x0002, 0x00 },{ 0x0001, 0x01 },{ 0x0001, 0x04 }, { 0x0001, 0x05 },{ 0x0001, 0x00 },{ 0x0001, 0x01 },{ 0x0001, 0x04 }, { 0x0002, 0x00 },{ 0x0001, 0x01 },{ 0x0001, 0x04 },{ 0x0002, 0x00 }, { 0x0001, 0x01 },{ 0x0001, 0x04 },{ 0x0001, 0x05 },{ 0x0001, 0x00 }, { 0x01B0, 0x01 },{ 0x0001, 0x00 },{ 0x0002, 0x01 },{ 0x00AD, 0x00 }, { 0x0031, 0x01 },{ 0x005C, 0x00 },{ 0x0005, 0x01 },{ 0x604E, 0x00 }, { 0,0 } }; UINT8 *RAM = machine.region("maincpu")->base(); int i, j, A; for (i = A = 0; table[i].count; i++) for (j = 0; j < table[i].count; j++) RAM[A++] ^= table[i].value; } /************************************* * * Game drivers * *************************************/ GAME( 1983, jrpacman, 0, jrpacman, jrpacman, jrpacman, ROT90, "Bally Midway", "Jr. Pac-Man", GAME_SUPPORTS_SAVE )