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path: root/src/mess/drivers/c900.c
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/*

    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) ,
		m_maincpu(*this, "maincpu") { }

	UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	required_device<cpu_device> m_maincpu;
};

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_REGION( 0x1000, "chargen", 0 )
	ROM_LOAD( "380217-01.u2", 0x0000, 0x1000, CRC(64cb4171) SHA1(e60d796170addfd27e2c33090f9c512c7e3f99f5) )
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)