// license:MAME // copyright-holders:Robbbert /*************************************************************************** Univac Terminals The terminals are models UTS20, UTS30, UTS40, UTS50 and SVT1120, however only the UTS20 is dumped (program roms only). 25/05/2009 Skeleton driver The terminal has 2 screens selectable by the operator with the Fn + 1-2 buttons. Thus the user can have two sessions open at once, to different mainframes or applications. ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" class univac_state : public driver_device { public: univac_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu") { } required_device m_maincpu; DECLARE_READ8_MEMBER( uts20_vram_r ); DECLARE_WRITE8_MEMBER( uts20_vram_w ); DECLARE_WRITE8_MEMBER( uts20_43_w ); const UINT8 *m_p_chargen; bool m_screen_num; UINT8 m_framecnt; virtual void machine_reset(); virtual void video_start(); UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); }; WRITE8_MEMBER( univac_state::uts20_43_w ) { m_screen_num = data & 1; } READ8_MEMBER( univac_state::uts20_vram_r ) { UINT8 *RAM = memregion("maincpu")->base(); return RAM[offset | ((m_screen_num) ? 0xe000 : 0xc000)]; } WRITE8_MEMBER( univac_state::uts20_vram_w ) { UINT8 *RAM = memregion("maincpu")->base(); RAM[offset | ((m_screen_num) ? 0xe000 : 0xc000)] = data; } static ADDRESS_MAP_START(uts20_mem, AS_PROGRAM, 8, univac_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE( 0x0000, 0x4fff ) AM_ROM AM_RANGE( 0x5000, 0x7fff ) AM_RAM AM_REGION("maincpu", 0x5000) AM_RANGE( 0x8000, 0x9fff ) AM_READWRITE(uts20_vram_r,uts20_vram_w) AM_RANGE( 0xa000, 0xffff ) AM_RAM AM_REGION("maincpu", 0xa000) ADDRESS_MAP_END static ADDRESS_MAP_START( uts20_io, AS_IO, 8, univac_state) ADDRESS_MAP_GLOBAL_MASK(0xff) ADDRESS_MAP_UNMAP_HIGH AM_RANGE( 0x43, 0x43 ) AM_WRITE(uts20_43_w) ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( uts20 ) INPUT_PORTS_END void univac_state::machine_reset() { m_screen_num = 0; } void univac_state::video_start() { m_p_chargen = memregion("chargen")->base(); } UINT32 univac_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { UINT8 y,ra,chr,gfx; UINT16 sy=0,ma=0,x; UINT8 *videoram = memregion("maincpu")->base()+((m_screen_num) ? 0xe000 : 0xc000); m_framecnt++; for (y = 0; y < 25; y++) { for (ra = 0; ra < 10; ra++) { UINT16 *p = &bitmap.pix16(sy++); for (x = ma; x < ma + 80; x++) { gfx = 0; if (ra < 9) { chr = videoram[x]; /* Take care of flashing characters */ if ((chr & 0x80) && (m_framecnt & 8)) chr = 0x20; chr &= 0x7f; gfx = m_p_chargen[(chr<<4) | ra ]; } /* Display a scanline of a character */ *p++ = BIT(gfx, 7); *p++ = BIT(gfx, 6); *p++ = BIT(gfx, 5); *p++ = BIT(gfx, 4); *p++ = BIT(gfx, 3); *p++ = BIT(gfx, 2); *p++ = BIT(gfx, 1); *p++ = BIT(gfx, 0); } } ma+=80; } return 0; } static MACHINE_CONFIG_START( uts20, univac_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz) MCFG_CPU_PROGRAM_MAP(uts20_mem) MCFG_CPU_IO_MAP(uts20_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_UPDATE_DRIVER(univac_state, screen_update) MCFG_SCREEN_SIZE(640, 250) MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 249) MCFG_SCREEN_PALETTE("palette") MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") MACHINE_CONFIG_END /* ROM definition */ ROM_START( uts20 ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "uts20a.rom", 0x0000, 0x1000, CRC(1a7b4b4e) SHA1(c3732e25b4b7c7a80172e3fe55c77b923cf511eb) ) ROM_LOAD( "uts20b.rom", 0x1000, 0x1000, CRC(7f8de87b) SHA1(a85f404ad9d560df831cc3e651a4b45e4ed30130) ) ROM_LOAD( "uts20c.rom", 0x2000, 0x1000, CRC(4e334705) SHA1(ff1a730551b42f29d20af8ecc4495fd30567d35b) ) ROM_LOAD( "uts20d.rom", 0x3000, 0x1000, CRC(76757cf7) SHA1(b0509d9a35366b21955f83ec3685163844c4dbf1) ) ROM_LOAD( "uts20e.rom", 0x4000, 0x1000, CRC(0dfc8062) SHA1(cd681020bfb4829d4cebaf1b5bf618e67b55bda3) ) /* character generator not dumped, using the one from 'c10' for now */ ROM_REGION( 0x2000, "chargen", 0 ) ROM_LOAD("c10_char.bin", 0x0000, 0x2000, BAD_DUMP CRC(cb530b6f) SHA1(95590bbb433db9c4317f535723b29516b9b9fcbf) ) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 198?, uts20, 0, 0, uts20, uts20, driver_device, 0, "Sperry Univac", "UTS-20", GAME_NOT_WORKING | GAME_NO_SOUND)