// license:BSD-3-Clause // copyright-holders:David Haywood /* Sega Picture Magic (codename JANUS) */ // http://segaretro.org/Sega_Picture_Magic // this uses a Sega 32X PCB (not in a 32X case) attached to a stripped down 68k based board rather than a full Genesis / Megadrive // it is likely the internal SH2 bios roms differ #include "emu.h" #include "cpu/m68000/m68000.h" class segapm_state : public driver_device { public: segapm_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu") { } virtual void video_start() override; UINT32 screen_update_segapm(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); required_device m_maincpu; }; void segapm_state::video_start() { } UINT32 segapm_state::screen_update_segapm(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { return 0; } static ADDRESS_MAP_START( segapm_map, AS_PROGRAM, 16, segapm_state ) AM_RANGE(0x000000, 0x07ffff) AM_ROM // A15100 AM_RANGE(0xe00000, 0xe7ffff) AM_RAM ADDRESS_MAP_END static INPUT_PORTS_START( segapm ) INPUT_PORTS_END static MACHINE_CONFIG_START( segapm, segapm_state ) MCFG_CPU_ADD("maincpu", M68000, 8000000) // ?? MCFG_CPU_PROGRAM_MAP(segapm_map) // + 2 sh2s on 32x board MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) MCFG_SCREEN_SIZE(32*8, 32*8) MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1) MCFG_SCREEN_UPDATE_DRIVER(segapm_state, screen_update_segapm) MCFG_SCREEN_PALETTE("palette") MCFG_PALETTE_ADD("palette", 0x200) MCFG_PALETTE_FORMAT(xRRRRRGGGGGBBBBB) MACHINE_CONFIG_END ROM_START( segapm ) // was more than one cartridge available? if so softlist them? ROM_REGION( 0x80000, "maincpu", 0 ) /* 68000 Code */ ROM_LOAD( "picture magic boot cart (j) [!].bin", 0x00000, 0x80000, CRC(c9ab4e60) SHA1(9c4d4ab3e59c8acde86049a1ba3787aa03b549a3) ) // internal header is GOUSEI HENSYUU // todo, sh2 bios roms etc. ROM_END GAME( 1996, segapm, 0, segapm, segapm, driver_device, 0, ROT0, "Sega", "Picture Magic", MACHINE_NO_SOUND | MACHINE_NOT_WORKING )