/*************************************************************************** DEC VT320 30/06/2009 Skeleton driver. ****************************************************************************/ #include "emu.h" #include "cpu/mcs51/mcs51.h" #include "machine/ram.h" class vt320_state : public driver_device { public: vt320_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu"), m_ram(*this, RAM_TAG) { } virtual void machine_reset(); virtual void video_start(); UINT32 screen_update_vt320(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); required_device m_maincpu; required_device m_ram; }; /* Partlist : Siemens SAB8031A-16-P ROMless version of the 8051 microcontroller, running at 16 MHz. Motorola MC2681P Dual Universal Asynchronous Receiver/Transmitter (DUART), 40-pin package. Toshiba TC53512AP ROM, 512K bits = 64K bytes. 28-pin package. Toshiba TC5565APL-12, 2 off Static RAM, 64K bit = 8K byte. ST TDA1170N Vertical deflection system IC. UC 80343Q 20 pins. Unknown. UC 80068Q 20 pins. Unknown. Motorola SN74LS157NQST 16 pins. Quad 2-to-1 multiplexer. Microchip ER5911 8 pins. Serial EEPROM. 1K bits = 128 bytes. Texas Inst. 749X 75146 8 pins. Unknown. Signetics? 74LS373N 8-bit D-type latch. This has eight inputs and eight outputs. */ static ADDRESS_MAP_START(vt320_mem, AS_PROGRAM, 8, vt320_state) AM_RANGE(0x0000, 0xffff) AM_ROM ADDRESS_MAP_END static ADDRESS_MAP_START(vt320_io, AS_IO, 8, vt320_state) ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( vt320 ) INPUT_PORTS_END void vt320_state::machine_reset() { memset(m_ram->pointer(),0,16*1024); } void vt320_state::video_start() { } UINT32 vt320_state::screen_update_vt320(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { return 0; } static MACHINE_CONFIG_START( vt320, vt320_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", I8051, XTAL_16MHz) MCFG_CPU_PROGRAM_MAP(vt320_mem) MCFG_CPU_IO_MAP(vt320_io) /* 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(vt320_state, screen_update_vt320) MCFG_SCREEN_PALETTE("palette") MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("16K") MACHINE_CONFIG_END /* ROM definition */ ROM_START( vt320 ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "23-054e7.bin", 0x0000, 0x10000, CRC(be98f9a4) SHA1(b8044d42ffaadb734fbd047fbca9c8aadeb0bf6c)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1987, vt320, 0, 0, vt320, vt320, driver_device, 0, "Digital Equipment Corporation", "VT320", GAME_NOT_WORKING | GAME_NO_SOUND) //COMP( 1989?, vt330, 0, 0, vt320, vt320, driver_device, 0, "Digital Equipment Corporation", "VT330", GAME_NOT_WORKING) //COMP( 1989?, vt340, 0, 0, vt320, vt320, driver_device, 0, "Digital Equipment Corporation", "VT340", GAME_NOT_WORKING) //COMP( 1990?, vt340p, 0, 0, vt320, vt320, driver_device, 0, "Digital Equipment Corporation", "VT340+", GAME_NOT_WORKING)