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Diffstat (limited to 'src/mess/drivers/univac.c')
-rw-r--r--src/mess/drivers/univac.c174
1 files changed, 174 insertions, 0 deletions
diff --git a/src/mess/drivers/univac.c b/src/mess/drivers/univac.c
new file mode 100644
index 00000000000..cf77b3768c4
--- /dev/null
+++ b/src/mess/drivers/univac.c
@@ -0,0 +1,174 @@
+/***************************************************************************
+
+ 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"
+
+#define MACHINE_RESET_MEMBER(name) void name::machine_reset()
+#define VIDEO_START_MEMBER(name) void name::video_start()
+#define SCREEN_UPDATE16_MEMBER(name) UINT32 name::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+
+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<cpu_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
+
+
+MACHINE_RESET_MEMBER(univac_state)
+{
+ m_screen_num = 0;
+}
+
+VIDEO_START_MEMBER(univac_state)
+{
+ m_p_chargen = memregion("chargen")->base();
+}
+
+SCREEN_UPDATE16_MEMBER(univac_state)
+{
+ 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_PALETTE_LENGTH(2)
+ MCFG_PALETTE_INIT(black_and_white)
+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)