/* Commodore C900 UNIX prototype http://www.zimmers.net/cbmpics/c900.html http://www.zimmers.net/cbmpics/cbm/900/c900-chips.txt */ #include "emu.h" #include "cpu/z8000/z8000.h" class c900_state : public driver_device { public: c900_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) { } UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); }; static ADDRESS_MAP_START(c900_mem, AS_PROGRAM, 16, c900_state) AM_RANGE(0x0000, 0x7fff) AM_ROM AM_REGION("maincpu", 0) ADDRESS_MAP_END static ADDRESS_MAP_START(c900_io, AS_IO, 8, c900_state) ADDRESS_MAP_END static INPUT_PORTS_START( c900 ) INPUT_PORTS_END UINT32 c900_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { return 0; } static MACHINE_CONFIG_START( c900, c900_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", Z8001, 4000000) MCFG_CPU_PROGRAM_MAP(c900_mem) MCFG_CPU_IO_MAP(c900_io) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_SIZE(512, 256) MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 256-1) MCFG_PALETTE_LENGTH(4) MCFG_SCREEN_UPDATE_DRIVER(c900_state, screen_update) MACHINE_CONFIG_END ROM_START( c900 ) ROM_REGION16_LE( 0x8000, "maincpu", 0 ) ROM_LOAD16_BYTE( "c 900 boot-h v 1.0.bin.u17", 0x0000, 0x4000, CRC(c3aa7fc1) SHA1(ff12dd100fa7b1e7e931e9a8ef4c4f5cc056e099) ) ROM_LOAD16_BYTE( "c 900 boot-l v 1.0.bin.u18", 0x0001, 0x4000, CRC(0aa39272) SHA1(b2c5da4586d38fc66bb33aafeae4dbda36080f1e) ) ROM_END /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1985, c900, 0, 0, c900, c900, driver_device, 0, "Commodore", "Commodore 900", GAME_NOT_WORKING | GAME_NO_SOUND)