diff options
Diffstat (limited to 'docs/release/src/mame/drivers/jrpacman.cpp')
-rw-r--r-- | docs/release/src/mame/drivers/jrpacman.cpp | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/docs/release/src/mame/drivers/jrpacman.cpp b/docs/release/src/mame/drivers/jrpacman.cpp new file mode 100644 index 00000000000..815339e941e --- /dev/null +++ b/docs/release/src/mame/drivers/jrpacman.cpp @@ -0,0 +1,446 @@ +// license:BSD-3-Clause +// copyright-holders:Nicola Salmoria +/*************************************************************************** + + 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 "includes/pacman.h" + +#include "cpu/z80/z80.h" +#include "screen.h" +#include "speaker.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) { } + DECLARE_WRITE8_MEMBER(jrpacman_interrupt_vector_w); + DECLARE_WRITE8_MEMBER(irq_mask_w); + DECLARE_DRIVER_INIT(jrpacman); + INTERRUPT_GEN_MEMBER(vblank_irq); +}; + + + +WRITE8_MEMBER(jrpacman_state::jrpacman_interrupt_vector_w) +{ + m_maincpu->set_input_line_vector(0, data); + m_maincpu->set_input_line(0, CLEAR_LINE); +} + +WRITE8_MEMBER(jrpacman_state::irq_mask_w) +{ + m_irq_mask = data & 1; +} + +/************************************* + * + * Main CPU memory handlers + * + *************************************/ + +static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, jrpacman_state ) + AM_RANGE(0x0000, 0x3fff) AM_ROM + AM_RANGE(0x4000, 0x47ff) AM_RAM_WRITE(jrpacman_videoram_w) AM_SHARE("videoram") + AM_RANGE(0x4800, 0x4fef) AM_RAM + AM_RANGE(0x4ff0, 0x4fff) AM_RAM AM_SHARE("spriteram") + AM_RANGE(0x5000, 0x503f) AM_READ_PORT("P1") + AM_RANGE(0x5000, 0x5000) AM_WRITE(irq_mask_w) + AM_RANGE(0x5001, 0x5001) AM_DEVWRITE("namco", namco_device, 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", namco_device, pacman_sound_w) + AM_RANGE(0x5060, 0x506f) AM_WRITEONLY AM_SHARE("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 +// HBMAME extras + AM_RANGE(0x5002, 0x5002) AM_WRITENOP + AM_RANGE(0x5004, 0x5005) AM_WRITE(pacman_leds_w) + AM_RANGE(0x5006, 0x5006) AM_WRITENOP + AM_RANGE(0x5007, 0x5007) AM_WRITENOP + AM_RANGE(0x5072, 0x5072) AM_WRITENOP + AM_RANGE(0x5076, 0x507f) AM_WRITENOP + AM_RANGE(0xfffc, 0xffff) AM_RAM /* for jrfast and fastjr */ +ADDRESS_MAP_END + + +static ADDRESS_MAP_START( port_map, AS_IO, 8, jrpacman_state ) + 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 + /* Press this to instantly finish the level - HBMAME */ + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME("Finish Level (Cheat)") PORT_CODE(KEYCODE_8) + 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 ) ) + +// HBMAME extras + PORT_START ("FAKE") + /* This fake input port is used to get the status of the fire button */ + /* and activate the speedup cheat. */ + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME( "Speed (Cheat)" ) + PORT_DIPNAME( 0x06, 0x02, "Speed Cheat" ) + PORT_DIPSETTING( 0x00, "Disabled" ) + PORT_DIPSETTING( 0x02, "Enabled with Button" ) + PORT_DIPSETTING( 0x04, "Enabled Always" ) + + PORT_START ("CONFIG") + PORT_CONFNAME( 0x01, 0x01, "Level" ) + PORT_CONFSETTING( 0x00, DEF_STR( Off ) ) + PORT_CONFSETTING( 0x01, 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 + + + +/************************************* + * + * Machine drivers + * + *************************************/ + +INTERRUPT_GEN_MEMBER(jrpacman_state::vblank_irq) +{ + if(m_irq_mask) + device.execute().set_input_line(0, HOLD_LINE); +} + +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_DRIVER("screen", jrpacman_state, vblank_irq) + MCFG_CPU_VBLANK_INT_DRIVER("screen", pacman_state, pacman_interrupt) // HBMAME + + /* 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_SIZE(36*8, 28*8) + MCFG_SCREEN_VISIBLE_AREA(0*8, 36*8-1, 0*8, 28*8-1) + MCFG_SCREEN_UPDATE_DRIVER(jrpacman_state, screen_update_pacman) + MCFG_SCREEN_PALETTE("palette") + + MCFG_GFXDECODE_ADD("gfxdecode", "palette", jrpacman) + MCFG_PALETTE_ADD("palette", 128*4) + MCFG_PALETTE_INDIRECT_ENTRIES(32) + MCFG_PALETTE_INIT_OWNER(jrpacman_state,pacman) + MCFG_VIDEO_START_OVERRIDE(jrpacman_state,jrpacman) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + + MCFG_SOUND_ADD("namco", NAMCO, 3072000/32) + MCFG_NAMCO_AUDIO_VOICES(3) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) +MACHINE_CONFIG_END + + + +/************************************* + * + * ROM definitions + * + *************************************/ + +ROM_START( jrpacman ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "jrp8d.8d", 0x0000, 0x2000, CRC(e3fa972e) SHA1(5ea34621213c649ca2848ab31aab2cbe751723d4) ) + ROM_LOAD( "jrp8e.8e", 0x2000, 0x2000, CRC(ec889e94) SHA1(8294e9e79f8fd19a419431fa690e6ac4a1302f58) ) + ROM_LOAD( "jrp8h.8h", 0x8000, 0x2000, CRC(35f1fc6e) SHA1(b84b34560b9aae18b24274712b052283faa01730) ) + ROM_LOAD( "jrp8j.8j", 0xa000, 0x2000, CRC(9737099e) SHA1(07d912a61824323c8fc1b8bd0da89172d4f70b91) ) + ROM_LOAD( "jrp8k.8k", 0xc000, 0x2000, CRC(5252dd97) SHA1(18bd4d5381656120e4242811006c20776774de4d) ) + + ROM_REGION( 0x4000, "gfx1", 0 ) + ROM_LOAD( "jrp2c.2c", 0x0000, 0x2000, CRC(0527ff9b) SHA1(37fe3176b0d125b7d629e108e7ebdc1196e4a132) ) /* tiles (bank 1 & 2) */ + ROM_LOAD( "jrp2e.2e", 0x2000, 0x2000, CRC(73477193) SHA1(f00a488958ea0438642d345693787bdf771219ad) ) /* sprites (bank 1 & 2) */ + + ROM_REGION( 0x0120, "proms", 0 ) + ROM_LOAD_NIB_LOW ( "a290-27axv-bxhd.9e", 0x0000, 0x0100, CRC(029d35c4) SHA1(d9aa2dc442e9ac36cf3c346b9fb1aa745eaf3cb8) ) /* color palette (low bits) */ + ROM_LOAD_NIB_HIGH( "a290-27axv-cxhd.9f", 0x0000, 0x0100, CRC(eee34a79) SHA1(7561f8ccab2af85c111af6a02af6986eb67503e5) ) /* color palette (high bits) */ + ROM_LOAD( "a290-27axv-axhd.9p", 0x0020, 0x0100, CRC(9f6ea9d8) SHA1(62cf15513934d34641433c891a7f73bef82e2fb1) ) /* color lookup table */ + + ROM_REGION( 0x0200, "namco", 0 ) + ROM_LOAD( "a290-27axv-dxhd.7p", 0x0000, 0x0100, CRC(a9cc86bf) SHA1(bbcec0570aeceb582ff8238a4bc8546a23430081) ) /* waveform */ + ROM_LOAD( "a290-27axv-exhd.5s", 0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */ +ROM_END + +ROM_START( jrpacmanf ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "fast_jr.8d", 0x0000, 0x2000, CRC(461e8b57) SHA1(42e25d384e653efb95a97bd64f55a8c3b3f71239) ) // only 1 byte difference + ROM_LOAD( "jrp8e.8e", 0x2000, 0x2000, CRC(ec889e94) SHA1(8294e9e79f8fd19a419431fa690e6ac4a1302f58) ) + ROM_LOAD( "jrp8h.8h", 0x8000, 0x2000, CRC(35f1fc6e) SHA1(b84b34560b9aae18b24274712b052283faa01730) ) + ROM_LOAD( "jrp8j.8j", 0xa000, 0x2000, CRC(9737099e) SHA1(07d912a61824323c8fc1b8bd0da89172d4f70b91) ) + ROM_LOAD( "jrp8k.8k", 0xc000, 0x2000, CRC(5252dd97) SHA1(18bd4d5381656120e4242811006c20776774de4d) ) + + ROM_REGION( 0x4000, "gfx1", 0 ) + ROM_LOAD( "jrp2c.2c", 0x0000, 0x2000, CRC(0527ff9b) SHA1(37fe3176b0d125b7d629e108e7ebdc1196e4a132) ) /* tiles (bank 1 & 2) */ + ROM_LOAD( "jrp2e.2e", 0x2000, 0x2000, CRC(73477193) SHA1(f00a488958ea0438642d345693787bdf771219ad) ) /* sprites (bank 1 & 2) */ + + ROM_REGION( 0x0120, "proms", 0 ) + ROM_LOAD_NIB_LOW ( "a290-27axv-bxhd.9e", 0x0000, 0x0100, CRC(029d35c4) SHA1(d9aa2dc442e9ac36cf3c346b9fb1aa745eaf3cb8) ) /* color palette (low bits) */ + ROM_LOAD_NIB_HIGH( "a290-27axv-cxhd.9f", 0x0000, 0x0100, CRC(eee34a79) SHA1(7561f8ccab2af85c111af6a02af6986eb67503e5) ) /* color palette (high bits) */ + ROM_LOAD( "a290-27axv-axhd.9p", 0x0020, 0x0100, CRC(9f6ea9d8) SHA1(62cf15513934d34641433c891a7f73bef82e2fb1) ) /* color lookup table */ + + ROM_REGION( 0x0200, "namco", 0 ) + ROM_LOAD( "a290-27axv-dxhd.7p", 0x0000, 0x0100, CRC(a9cc86bf) SHA1(bbcec0570aeceb582ff8238a4bc8546a23430081) ) /* waveform */ + ROM_LOAD( "a290-27axv-exhd.5s", 0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */ +ROM_END + + + +/************************************* + * + * Driver initialization + * + *************************************/ + +DRIVER_INIT_MEMBER(jrpacman_state,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_t *RAM = memregion("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_state, jrpacman, ROT90, "Bally Midway", "Jr. Pac-Man (11/9/83)", MACHINE_SUPPORTS_SAVE ) +GAME( 1983, jrpacmanf, jrpacman, jrpacman, jrpacman, jrpacman_state, jrpacman, ROT90, "hack", "Jr. Pac-Man (speedup hack)", MACHINE_SUPPORTS_SAVE ) |