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/***************************************************************************
Elektronika MK-85
12/05/2009 Skeleton driver.
http://www.taswegian.com/MOSCOW/mk-85.html
This is a Soviet computer-calculator, very similar in looks to the Sharp.
It has a LCD display.
Models:
MK-85: 2K of RAM
MK-85M: 6K of RAM
MK-85C: Military cryptographic device. Typing text into it produces
a string of numbers.
****************************************************************************/
#include "emu.h"
#include "cpu/t11/t11.h"
class mk85_state : public driver_device
{
public:
mk85_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) ,
m_maincpu(*this, "maincpu") { }
virtual void machine_reset();
virtual void video_start();
UINT32 screen_update_mk85(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
required_device<cpu_device> m_maincpu;
};
static ADDRESS_MAP_START(mk85_mem, AS_PROGRAM, 16, mk85_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE( 0x0000, 0x3fff ) AM_ROM AM_MIRROR(0x4000)
AM_RANGE( 0x8000, 0xffff ) AM_RAM
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( mk85 )
INPUT_PORTS_END
void mk85_state::machine_reset()
{
}
void mk85_state::video_start()
{
}
UINT32 mk85_state::screen_update_mk85(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
return 0;
}
static MACHINE_CONFIG_START( mk85, mk85_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",T11, XTAL_4MHz)
MCFG_T11_INITIAL_MODE(5 << 13) /* start from 0000 */
MCFG_CPU_PROGRAM_MAP(mk85_mem)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(640, 480)
MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
MCFG_SCREEN_UPDATE_DRIVER(mk85_state, screen_update_mk85)
MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( mk85 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "mk85.rom", 0x0000, 0x4000, CRC(398e4fd1) SHA1(5e2f877d0f451b46840f01190004552bad5248c8))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1986, mk85, 0, 0, mk85, mk85, driver_device, 0, "Elektronika", "MK-85", GAME_NOT_WORKING | GAME_NO_SOUND)
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