/*************************************************************************** XOR WORLD (c) 1990 Gaelco Driver by Manuel Abadia Memory Map: ----------- 0x000000-0x01ffff ROM 0x200000-0x200001 Input #1 0x400000-0x400001 Input #2 0x600000-0x600001 DIPSW #1 + EEPROM read 0x800000-0x800001 Philips SAA1099P write register 0x800002-0x800003 Philips SAA1099P control register 0xa00008-0xa0000d EEPROM write/ctrl 0xffc000-0xffc7ff Screen (8x8 tiles 32x32 (256x256)) 0xffc800-0xffc87f Sprite RAM 0xffc884-0xffffff Work RAM Interrupts: Level 2 INT updates the timer Level 6 INT drives the game Unmapped addresses in the driver: 0xffc800-0xffc801 INT 2 ACK\Watchdog timer 0xffc802-0xffc803 INT 6 ACK/Watchdog timer EEPROM chip: 93C46 ***************************************************************************/ #include "driver.h" #include "deprecat.h" #include "machine/eeprom.h" #include "cpu/m68000/m68000.h" #include "sound/saa1099.h" extern WRITE16_HANDLER(xorworld_videoram16_w); extern PALETTE_INIT( xorworld ); extern VIDEO_START( xorworld ); extern VIDEO_UPDATE( xorworld ); /**************************************************************** NVRAM load/save/init ****************************************************************/ static NVRAM_HANDLER( xorworld ) { if (read_or_write) { eeprom_save(file); } else { eeprom_init(machine, &eeprom_interface_93C46); if (file) { eeprom_load(file); } } } /**************************************************************** Init machine ****************************************************************/ /**************************************************************** EEPROM read/write/control ****************************************************************/ static WRITE16_HANDLER( eeprom_chip_select_w ) { /* bit 0 is CS (active low) */ eeprom_set_cs_line((data & 0x01) ? CLEAR_LINE : ASSERT_LINE); } static WRITE16_HANDLER( eeprom_serial_clock_w ) { /* bit 0 is SK (active high) */ eeprom_set_clock_line((data & 0x01) ? ASSERT_LINE : CLEAR_LINE); } static WRITE16_HANDLER( eeprom_data_w ) { /* bit 0 is EEPROM data (DIN) */ eeprom_write_bit(data & 0x01); } static ADDRESS_MAP_START( xorworld_map, ADDRESS_SPACE_PROGRAM, 16 ) AM_RANGE(0x000000, 0x01ffff) AM_ROM AM_RANGE(0x200000, 0x200001) AM_READ_PORT("P1") AM_RANGE(0x400000, 0x400001) AM_READ_PORT("P2") AM_RANGE(0x600000, 0x600001) AM_READ_PORT("DSW") AM_RANGE(0x800000, 0x800001) AM_DEVWRITE8("saa", saa1099_data_w, 0x00ff) AM_RANGE(0x800002, 0x800003) AM_DEVWRITE8("saa", saa1099_control_w, 0x00ff) AM_RANGE(0xa00008, 0xa00009) AM_WRITE(eeprom_chip_select_w) AM_RANGE(0xa0000a, 0xa0000b) AM_WRITE(eeprom_serial_clock_w) AM_RANGE(0xa0000c, 0xa0000d) AM_WRITE(eeprom_data_w) AM_RANGE(0xffc000, 0xffc7ff) AM_RAM_WRITE(xorworld_videoram16_w) AM_BASE(&videoram16) AM_RANGE(0xffc800, 0xffc87f) AM_RAM AM_BASE(&spriteram16) AM_RANGE(0xffc880, 0xffc881) AM_WRITENOP AM_RANGE(0xffc882, 0xffc883) AM_WRITENOP AM_RANGE(0xffc884, 0xffffff) AM_RAM ADDRESS_MAP_END static INPUT_PORTS_START( xorworld ) PORT_START("DSW") PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coinage ) ) PORT_DIPSETTING( 0x00, DEF_STR( 3C_1C ) ) PORT_DIPSETTING( 0x01, DEF_STR( 2C_2C ) ) PORT_DIPSETTING( 0x07, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x06, DEF_STR( 1C_2C ) ) PORT_DIPSETTING( 0x05, DEF_STR( 1C_3C ) ) PORT_DIPSETTING( 0x04, DEF_STR( 1C_4C ) ) PORT_DIPSETTING( 0x03, DEF_STR( 1C_5C ) ) PORT_DIPSETTING( 0x02, DEF_STR( 1C_6C ) ) PORT_DIPNAME( 0x08, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(eeprom_bit_r, NULL) /* used for accessing the NVRAM */ PORT_DIPNAME( 0x60, 0x40, DEF_STR( Difficulty ) ) PORT_DIPSETTING( 0x40, DEF_STR( Easy ) ) PORT_DIPSETTING( 0x60, DEF_STR( Normal ) ) PORT_DIPSETTING( 0x20, DEF_STR( Hard ) ) PORT_DIPSETTING( 0x00, DEF_STR( Hardest ) ) PORT_SERVICE( 0x80, IP_ACTIVE_LOW ) PORT_START("P1") PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) // xor PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) // rotate PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_START("P2") PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_START2 ) INPUT_PORTS_END static const gfx_layout tilelayout = { 8,8, /* 8x8 tiles */ 0x10000/16, /* 4096 tiles */ 4, /* 4 bpp */ { 1*0x10000*8, 1*0x10000*8+4, 0, 4 }, /* plane offsets */ { 0*8, 0*8+1, 0*8+2, 0*8+3, 1*8+0, 1*8+1, 1*8+2, 1*8+3 }, { 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 }, 16*8 }; static const gfx_layout spritelayout = { 16,16, /* 16x16 sprites */ 0x10000/64, /* 1024 sprites */ 4, /* 4 bpp */ { 1*0x10000*8, 1*0x10000*8+4, 0, 4 }, /* plane offsets */ { 0*8, 0*8+1, 0*8+2, 0*8+3, 1*8+0, 1*8+1, 1*8+2, 1*8+3, 32*8+0, 32*8+1, 32*8+2, 32*8+3, 33*8+0, 33*8+1, 33*8+2, 33*8+3}, { 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16, 8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16 }, 64*8 }; static GFXDECODE_START( xorworld ) GFXDECODE_ENTRY( "gfx1", 0x000000, tilelayout, 0, 64 ) GFXDECODE_ENTRY( "gfx1", 0x000000, spritelayout, 0, 64 ) GFXDECODE_END static INTERRUPT_GEN( xorworld_interrupt ) { if (cpu_getiloops(device) == 0) { cpu_set_input_line(device, 2, HOLD_LINE); } else if (cpu_getiloops(device) % 2) { cpu_set_input_line(device, 6, HOLD_LINE); } } static MACHINE_DRIVER_START( xorworld ) // basic machine hardware MDRV_CPU_ADD("maincpu", M68000, 10000000) // 10 MHz MDRV_CPU_PROGRAM_MAP(xorworld_map, 0) MDRV_CPU_VBLANK_INT_HACK(xorworld_interrupt, 4) // 1 IRQ2 + 1 IRQ4 + 1 IRQ6 MDRV_QUANTUM_TIME(HZ(60)) MDRV_NVRAM_HANDLER(xorworld) // video hardware MDRV_SCREEN_ADD("screen", RASTER) MDRV_SCREEN_REFRESH_RATE(60) MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MDRV_SCREEN_SIZE(32*8, 32*8) MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1) MDRV_GFXDECODE(xorworld) MDRV_PALETTE_LENGTH(256) MDRV_PALETTE_INIT(xorworld) MDRV_VIDEO_START(xorworld) MDRV_VIDEO_UPDATE(xorworld) // sound hardware MDRV_SPEAKER_STANDARD_MONO("mono") MDRV_SOUND_ADD("saa", SAA1099, 8000000 /* guess */) MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MACHINE_DRIVER_END ROM_START( xorworld ) ROM_REGION( 0x100000, "maincpu", 0 ) /* 68000 code */ ROM_LOAD16_BYTE( "c13.bin", 0x000000, 0x010000, CRC(615a864d) SHA1(db07eef19d26a4daa0bcc17ac24d237483f93bf6) ) ROM_LOAD16_BYTE( "b13.bin", 0x000001, 0x010000, CRC(632e8ee5) SHA1(ec53e632c762f72ad1fe3fab85111bdcc1e818ae) ) ROM_REGION( 0x020000, "gfx1", ROMREGION_DISPOSE ) ROM_LOAD( "d9.bin", 0x000000, 0x010000, CRC(da8d4d65) SHA1(41bcc15f26066bd820b44c0f258e70d0102953c9) ) ROM_LOAD( "d10.bin", 0x010000, 0x010000, CRC(3b1d6f24) SHA1(bedf60a4cbf20492b8a846b6a7b578f8fe8dbde9) ) ROM_REGION( 0x0300, "proms", 0 ) ROM_LOAD( "b4.bin", 0x0000, 0x0100, CRC(75e468af) SHA1(b5fd1a086c27ca2e837cbbf1b7e57dfdd369b0d0) ) /* Red palette ROM (4 bits) */ ROM_LOAD( "b7.bin", 0x0100, 0x0100, CRC(7e1cd146) SHA1(fd26a28f90c50ffcb0fe7718820c81eb9fe79e66) ) /* Green palette ROM (4 bits) */ ROM_LOAD( "b5.bin", 0x0200, 0x0100, CRC(c1b9d9f9) SHA1(c4b02bf60db449fb308a5eb3e41c43299ad8e3e3) ) /* Blue palette ROM (4 bits) */ ROM_END #define PATCH(data) *rom = data; rom++ static DRIVER_INIT( xorworld ) { /* patch some strange protection (without this, strange characters appear after level 5 and some pieces don't rotate properly some times) */ UINT16 *rom = (UINT16 *)(memory_region(machine, "maincpu") + 0x1390); PATCH(0x4239); PATCH(0x00ff); PATCH(0xe196); /* clr.b $ffe196 */ PATCH(0x4239); PATCH(0x00ff); PATCH(0xe197); /* clr.b $ffe197 */ PATCH(0x4239); PATCH(0x00ff); PATCH(0xe0bc); /* clr.b $ffe0bc */ PATCH(0x41f9); PATCH(0x00ff); PATCH(0xcfce); /* lea $ffcfce,A0 */ PATCH(0x3e3c); PATCH(0x000f); /* move #$f,D7 */ PATCH(0x4218); /* clr.b (A0)+ */ PATCH(0x51cf); PATCH(0xfffc); /* dbra D7,$13ac */ PATCH(0x4e75); /* rts */ PATCH(0x31ff); /* adjust checksum */ } GAME( 1990, xorworld, 0, xorworld, xorworld, xorworld, ROT0, "Gaelco", "Xor World (prototype)", 0 )