// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic /*************************************************************************** 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" #include "screen.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() override; virtual void video_start() override; uint32_t screen_update_mk85(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); required_device m_maincpu; void mk85(machine_config &config); void mk85_mem(address_map &map); }; void mk85_state::mk85_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x3fff).rom().mirror(0x4000); map(0x8000, 0xffff).ram(); } /* Input ports */ static INPUT_PORTS_START( mk85 ) INPUT_PORTS_END void mk85_state::machine_reset() { } void mk85_state::video_start() { } uint32_t mk85_state::screen_update_mk85(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { return 0; } MACHINE_CONFIG_START(mk85_state::mk85) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", K1801VM2, XTAL(4'000'000)) MCFG_T11_INITIAL_MODE(0) MCFG_DEVICE_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_SCREEN_PALETTE("palette") MCFG_PALETTE_ADD_MONOCHROME("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 CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 1986, mk85, 0, 0, mk85, mk85, mk85_state, empty_init, "Elektronika", "MK-85", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)