/* High Seas Havoc (c)1993 Data East This is an unusual Data East PCB based on the Sega Genesis / Megadrive. The Game was also released on the home system. Produttore Data East N.revisione CG-2 CPU 1x MC68000P8 (main)(12c) 1x Z8400B (sound)(1a) 1x custom SEGA315-5660-FC1004 (QFP208)(5d) 1x PIC16C57 (7a) 1x oscillator 53.6931MHz (osc1) ROMs 2x TMS27C040 (25,26)(11a,9a) 2x PEEL18CV8 (4b,5b) Note 1x JAMMA edge connector 1x trimmer (volume)(vr1) 2x 6 switches dip (dsw1,dsw2) ----------------------------------- PCB markings:"DE-0407-2 MADE IN JAPAN" ----------------------------------- Thanks to DOX, the "mistery chip" has been identified (and verified) as a PIC. Unfortunately it's read protected. */ #include "driver.h" #include "cpu/z80/z80.h" #include "cpu/m68000/m68000.h" #include "genesis.h" #define MASTER_CLOCK 53693100 static INPUT_PORTS_START( hshavoc ) PORT_START("IN0") /* 16bit */ PORT_DIPNAME( 0x0001, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0001, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0002, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0002, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0004, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0004, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0008, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0008, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0010, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0010, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0020, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0020, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0040, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0040, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0080, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0080, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0100, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0100, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0200, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0200, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0400, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0400, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x0800, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x0800, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x1000, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x1000, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x2000, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x2000, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x4000, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x4000, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) PORT_DIPNAME( 0x8000, 0x0000, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x8000, DEF_STR( Off ) ) PORT_DIPSETTING( 0x0000, DEF_STR( On ) ) INPUT_PORTS_END static ADDRESS_MAP_START( topshoot_readmem, ADDRESS_SPACE_PROGRAM, 16 ) AM_RANGE(0x000000, 0x0fffff) AM_READ(SMH_ROM) /* Cartridge Program Rom */ AM_RANGE(0x202000, 0x2023ff) AM_READ(SMH_RAM) AM_RANGE(0xa00000, 0xa0ffff) AM_READ(genesis_68k_to_z80_r) AM_RANGE(0xc00000, 0xc0001f) AM_READ(genesis_vdp_r) /* VDP Access */ AM_RANGE(0xe00000, 0xe1ffff) AM_READ(SMH_BANK3) AM_RANGE(0xfe0000, 0xfeffff) AM_READ(SMH_BANK4) AM_RANGE(0xff0000, 0xffffff) AM_READ(SMH_RAM) /* Main Ram */ ADDRESS_MAP_END static ADDRESS_MAP_START( topshoot_writemem, ADDRESS_SPACE_PROGRAM, 16 ) AM_RANGE(0x000000, 0x0fffff) AM_WRITE(SMH_ROM) /* Cartridge Program Rom */ // AM_RANGE(0x200000, 0x20007f) AM_WRITE(SMH_RAM) AM_RANGE(0x200000, 0x2023ff) AM_WRITE(SMH_RAM) // tested AM_RANGE(0xa10000, 0xa1001f) AM_WRITE(genesis_io_w) AM_BASE(&genesis_io_ram) /* Genesis Input */ AM_RANGE(0xa11000, 0xa11203) AM_WRITE(genesis_ctrl_w) AM_RANGE(0xa00000, 0xa0ffff) AM_WRITE(genesis_68k_to_z80_w) AM_RANGE(0xc00000, 0xc0001f) AM_WRITE(genesis_vdp_w) /* VDP Access */ AM_RANGE(0xfe0000, 0xfeffff) AM_WRITE(SMH_BANK4) AM_RANGE(0xff0000, 0xffffff) AM_WRITE(SMH_RAM) AM_BASE(&genesis_68k_ram)/* Main Ram */ ADDRESS_MAP_END static ADDRESS_MAP_START( genesis_z80_readmem, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x0000, 0x1fff) AM_READ(SMH_BANK1) AM_RANGE(0x2000, 0x3fff) AM_READ(SMH_BANK2) /* mirror */ AM_RANGE(0x4000, 0x7fff) AM_READ(genesis_z80_r) AM_RANGE(0x8000, 0xffff) AM_READ(genesis_z80_bank_r) ADDRESS_MAP_END static ADDRESS_MAP_START( genesis_z80_writemem, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x0000, 0x1fff) AM_WRITE(SMH_BANK1) AM_BASE(&genesis_z80_ram) AM_RANGE(0x2000, 0x3fff) AM_WRITE(SMH_BANK2) /* mirror */ AM_RANGE(0x4000, 0x7fff) AM_WRITE(genesis_z80_w) // AM_RANGE(0x8000, 0xffff) AM_WRITE(genesis_z80_bank_w) ADDRESS_MAP_END static MACHINE_DRIVER_START( genesis_base ) /*basic machine hardware */ MDRV_CPU_ADD("maincpu", M68000, MASTER_CLOCK / 7) MDRV_CPU_VBLANK_INT("screen", genesis_vblank_interrupt) MDRV_CPU_ADD("soundcpu", Z80, MASTER_CLOCK / 15) MDRV_CPU_PROGRAM_MAP(genesis_z80_readmem, genesis_z80_writemem) MDRV_CPU_VBLANK_INT("screen", irq0_line_hold) /* from vdp at scanline 0xe0 */ MDRV_QUANTUM_TIME(HZ(6000)) MDRV_MACHINE_START(genesis) MDRV_MACHINE_RESET(genesis) /* video hardware */ MDRV_VIDEO_ATTRIBUTES(VIDEO_HAS_SHADOWS | VIDEO_HAS_HIGHLIGHTS) MDRV_SCREEN_ADD("screen", RASTER) MDRV_SCREEN_REFRESH_RATE(60) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MDRV_SCREEN_SIZE(342,262) MDRV_SCREEN_VISIBLE_AREA(0, 319, 0, 223) MDRV_PALETTE_LENGTH(64) MDRV_VIDEO_START(genesis) MDRV_VIDEO_UPDATE(genesis) /* sound hardware */ MDRV_SPEAKER_STANDARD_MONO("mono") MDRV_SOUND_ADD("ym", YM3438, MASTER_CLOCK/7) MDRV_SOUND_ROUTE(0, "mono", 0.50) MDRV_SOUND_ROUTE(1, "mono", 0.50) MACHINE_DRIVER_END static MACHINE_DRIVER_START( hshavoc ) /* basic machine hardware */ MDRV_IMPORT_FROM( genesis_base ) MDRV_CPU_MODIFY("maincpu") MDRV_CPU_PROGRAM_MAP(topshoot_readmem,topshoot_writemem) /* sound hardware */ MDRV_SOUND_ADD("sn", SN76496, MASTER_CLOCK/15) MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) MACHINE_DRIVER_END ROM_START( hshavoc ) ROM_REGION( 0x200000, "maincpu", 0 ) ROM_LOAD16_BYTE( "d-25.11a", 0x000000, 0x080000, CRC(6a155060) SHA1(ecb47bd428786e50e300a062b5038f943419a389) ) ROM_LOAD16_BYTE( "d-26.9a", 0x000001, 0x080000, CRC(1afa84fe) SHA1(041296e0360b7747aedc2d948c39e06ba03a7d08) ) ROM_REGION( 0x200000, "user1", 0 ) // other ROM_LOAD( "peel18cv8s.4b.bin", 0x000, 0x155, CRC(b5fb1d5f) SHA1(f0ac80471d97f77f415b5a1f153e1fce66720963) ) ROM_LOAD( "peel18cv8s.5b.bin", 0x000, 0x155, CRC(efc7ceea) SHA1(1c31a56bc4b83bfa708048b7de4cee7a24537500) ) ROM_REGION( 0x200000, "user2", 0 ) // other ROM_LOAD( "pic16c57", 0x00, 0x01, NO_DUMP ) // protected ROM_END #ifdef UNUSED_DEFINITION ROM_START( hshavoc2 ) /* Genesis Version, for reference */ ROM_REGION( 0x200000, "maincpu", 0 ) ROM_LOAD( "hsh.rom", 0x000000, 0x100000, CRC(17be551c) SHA1(0dc1969098716ba332978b89356f62961417682b) ) ROM_END #endif static READ16_HANDLER( vdp_fake_r ) { return mame_rand(space->machine); } static DRIVER_INIT(genesis) { /* hack -- fix vdp emulation instead */ memory_install_read16_handler(cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM), 0xC00004, 0xC00005, 0, 0, vdp_fake_r); memory_set_bankptr(machine, 3, memory_region(machine, "maincpu") ); memory_set_bankptr(machine, 4, genesis_68k_ram ); } static DRIVER_INIT(hshavoc) { int x; UINT16 *src = (UINT16 *)memory_region(machine, "maincpu"); static const UINT16 typedat[16] = { 1,1,1,1, 1,1,1,1, 1,0,0,1, 1,0,1,1 }; /* this decryption is wrong / incomplete, maybe it uses slightly different decryption for opcodes / data */ /* I think the PIC that exists on the PCB controls a state-based encryption... there is a large amount of code encrypted using the same encryption as the data, but all the startup-code + vectors use additional encryption.. maybe the PIC can also patch the code, I'm also concerned that we may decrypt it and find that it runs as the genesis (no insert coin etc.) version without the PIC, or the PIC supplies additonal code in RAM.. but as of yet we can't know */ int rom_size = 0xe8000; for (x=0;x