diff options
Diffstat (limited to 'src/mess/drivers/univac.c')
-rw-r--r-- | src/mess/drivers/univac.c | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/src/mess/drivers/univac.c b/src/mess/drivers/univac.c deleted file mode 100644 index d26216c3bc5..00000000000 --- a/src/mess/drivers/univac.c +++ /dev/null @@ -1,214 +0,0 @@ -// license:BSD-3-Clause -// 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. - - Sound is a beeper. - - This driver is all guesswork; Unisys never released technical info - to customers. All parts on the PCBs have internal Unisys part numbers - instead of the manufacturer's numbers. - -****************************************************************************/ - -#include "emu.h" -#include "cpu/z80/z80.h" -#include "cpu/z80/z80daisy.h" -#include "machine/nvram.h" -#include "machine/z80ctc.h" -#include "machine/z80dart.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") - , m_p_videoram(*this, "videoram") - , m_nvram(*this, "nvram") - , m_ctc(*this, "ctc") - , m_dart(*this, "dart") - { } - - DECLARE_READ8_MEMBER(vram_r); - DECLARE_WRITE8_MEMBER(vram_w); - DECLARE_WRITE8_MEMBER(port43_w); - INTERRUPT_GEN_MEMBER(vblank_irq); - UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); -private: - const UINT8 *m_p_chargen; - bool m_screen_num; - UINT8 m_framecnt; - virtual void machine_start(); - virtual void machine_reset(); - required_device<cpu_device> m_maincpu; - required_shared_ptr<UINT8> m_p_videoram; - required_device<nvram_device> m_nvram; - required_device<z80ctc_device> m_ctc; - required_device<z80dart_device> m_dart; -}; - - - -WRITE8_MEMBER( univac_state::port43_w ) -{ - m_screen_num = BIT(data, 0); -} - -READ8_MEMBER( univac_state::vram_r ) -{ - offs_t offs = (offset & 0x1fff) ^ (BIT(offset, 13) ? 0x2000 : 0) ^ (m_screen_num ? 0x2000 : 0); - return m_p_videoram[offs]; -} - -WRITE8_MEMBER( univac_state::vram_w ) -{ - offs_t offs = (offset & 0x1fff) ^ (BIT(offset, 13) ? 0x2000 : 0) ^ (m_screen_num ? 0x2000 : 0); - m_p_videoram[offs] = data; -} - - -static ADDRESS_MAP_START(uts20_mem, AS_PROGRAM, 8, univac_state) - ADDRESS_MAP_UNMAP_HIGH - AM_RANGE( 0x0000, 0x4fff ) AM_ROM AM_REGION("roms", 0) - AM_RANGE( 0x8000, 0xbfff ) AM_READWRITE(vram_r,vram_w) - AM_RANGE( 0xc000, 0xffff ) AM_RAM AM_SHARE("videoram") -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(0x00, 0x03) AM_DEVREADWRITE("dart", z80dart_device, ba_cd_r, ba_cd_w) - AM_RANGE(0x00, 0x03) AM_DEVREADWRITE("dart", z80dart_device, cd_ba_r, cd_ba_w) // ?? no idea - AM_RANGE(0x20, 0x23) AM_DEVREADWRITE("ctc", z80ctc_device, read, write) - AM_RANGE(0x43, 0x43) AM_WRITE(port43_w) - AM_RANGE(0x80, 0xbf) AM_RAM AM_SHARE("nvram") -ADDRESS_MAP_END - -/* Input ports */ -static INPUT_PORTS_START( uts20 ) -INPUT_PORTS_END - - -void univac_state::machine_start() -{ -// D7DC and D7DD are checked for valid RID and SID (usually 21 and 51) if not valid then NVRAM gets initialised. -} - -void univac_state::machine_reset() -{ - m_screen_num = 0; - m_p_chargen = memregion("chargen")->base(); -} - -UINT32 univac_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - // this is used to get the ctc to pass the test - bool state = BIT(m_framecnt,0); - m_ctc->trg0(state); - m_ctc->trg1(state); - m_ctc->trg2(state); - m_ctc->trg3(state); - - UINT8 y,ra,chr,gfx; - UINT16 sy=0,ma=0,x; - UINT8 *videoram = m_p_videoram;//+(m_screen_num ? 0x2000 : 0); - - 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++) - { - chr = videoram[x]; - - /* Take care of 'corner' characters */ - if (((chr == 0x1c) || (chr == 0x1d)) && (m_framecnt & 16)) - chr = 0x20; - - gfx = (ra ? m_p_chargen[((chr & 0x7f)<<4) | (ra-1) ] : 0) ^ (BIT(chr, 7) ? 0xff : 0); - - /* 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 const z80_daisy_config daisy_chain[] = -{ - { "dart" }, - { "ctc" }, - { NULL } -}; - -static MACHINE_CONFIG_START( uts20, univac_state ) - /* basic machine hardware */ - MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz) // unknown clock - MCFG_CPU_PROGRAM_MAP(uts20_mem) - MCFG_CPU_IO_MAP(uts20_io) - MCFG_CPU_CONFIG(daisy_chain) - - /* 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_MONOCHROME_GREEN("palette") - - MCFG_NVRAM_ADD_1FILL("nvram") - MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL_4MHz) - MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) - MCFG_Z80DART_ADD("dart", XTAL_4MHz, 0, 0, 0, 0 ) - MCFG_Z80DART_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) -MACHINE_CONFIG_END - - -/* ROM definition */ -ROM_START( uts20 ) - ROM_REGION( 0x5000, "roms", 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) ) - ROM_FILL(0x2bd,1,0xaf) // test 2 - ROM_FILL(0x3c1,2,0xaf) // test 5 - ROM_FILL(0x928,1,0) - - /* 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 CLASS INIT COMPANY FULLNAME FLAGS */ -COMP( 1980, uts20, 0, 0, uts20, uts20, driver_device, 0, "Sperry Univac", "UTS-20", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) |