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Diffstat (limited to 'src/mame/drivers/vta2000.c')
-rw-r--r--src/mame/drivers/vta2000.c195
1 files changed, 195 insertions, 0 deletions
diff --git a/src/mame/drivers/vta2000.c b/src/mame/drivers/vta2000.c
new file mode 100644
index 00000000000..4f64a6ab490
--- /dev/null
+++ b/src/mame/drivers/vta2000.c
@@ -0,0 +1,195 @@
+// license:BSD-3-Clause
+// copyright-holders:Robbbert
+/***************************************************************************
+
+ VTA-2000 Terminal
+
+ board images : http://fotki.yandex.ru/users/lodedome/album/93699?p=0
+
+ BDP-15 board only
+
+ 29/11/2010 Skeleton driver.
+
+Better known on the net as BTA2000-15m.
+It is a green-screen terminal, using RS232, and supposedly VT100 compatible.
+The top line is a status line.
+
+Note: port 0 bit 4 is NOT a speaker bit. See code at 027B.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/i8085/i8085.h"
+
+
+class vta2000_state : public driver_device
+{
+public:
+ vta2000_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag)
+ , m_p_videoram(*this, "videoram")
+ , m_maincpu(*this, "maincpu")
+ { }
+
+ const UINT8 *m_p_chargen;
+ UINT32 screen_update_vta2000(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ required_shared_ptr<UINT8> m_p_videoram;
+ DECLARE_PALETTE_INIT(vta2000);
+private:
+ virtual void machine_reset();
+ virtual void video_start();
+ required_device<cpu_device> m_maincpu;
+};
+
+static ADDRESS_MAP_START(vta2000_mem, AS_PROGRAM, 8, vta2000_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE( 0x0000, 0x5fff ) AM_ROM AM_REGION("roms", 0)
+ AM_RANGE( 0x8000, 0xc7ff ) AM_RAM AM_SHARE("videoram")
+ AM_RANGE( 0xc800, 0xc8ff ) AM_ROM AM_REGION("roms", 0x5000)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(vta2000_io, AS_IO, 8, vta2000_state)
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ ADDRESS_MAP_UNMAP_HIGH
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( vta2000 )
+INPUT_PORTS_END
+
+
+void vta2000_state::machine_reset()
+{
+}
+
+void vta2000_state::video_start()
+{
+ m_p_chargen = memregion("chargen")->base();
+}
+
+UINT32 vta2000_state::screen_update_vta2000(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+/* Cursor is missing. */
+{
+ static UINT8 framecnt=0;
+ UINT8 y,ra,gfx,attr,fg,bg;
+ UINT16 sy=0,ma=0,x,xx=0,chr;
+
+ framecnt++;
+
+ for (y = 0; y < 25; y++)
+ {
+ for (ra = 0; ra < 12; ra++)
+ {
+ UINT16 *p = &bitmap.pix16(sy++);
+
+ xx = ma << 1;
+ for (x = ma; x < ma + 80; x++)
+ {
+ chr = m_p_videoram[xx++];
+ attr = m_p_videoram[xx++];
+
+ if ((chr & 0x60)==0x60)
+ chr+=256;
+
+ gfx = m_p_chargen[(chr<<4) | ra ];
+ bg = 0;
+
+ /* Process attributes */
+ if (BIT(attr, 4))
+ {
+ gfx ^= 0xff; // reverse video
+ bg = 2;
+ }
+ if (BIT(attr, 0))
+ fg = 2; // highlight
+ else
+ fg = 1;
+ if ((BIT(attr, 1)) && (BIT(framecnt, 5)))
+ gfx = 0; // blink
+ if ((BIT(attr, 5)) && (ra == 10))
+ {
+ gfx = 0xff; // underline
+ fg = 2;
+ }
+
+ /* Display a scanline of a character */
+ *p++ = BIT(gfx, 7) ? fg : bg;
+ *p++ = BIT(gfx, 6) ? fg : bg;
+ *p++ = BIT(gfx, 5) ? fg : bg;
+ *p++ = BIT(gfx, 4) ? fg : bg;
+ *p++ = BIT(gfx, 3) ? fg : bg;
+ *p++ = BIT(gfx, 2) ? fg : bg;
+ *p++ = BIT(gfx, 1) ? fg : bg;
+ *p++ = BIT(gfx, 0) ? fg : bg;
+ }
+ }
+ if (y)
+ ma+=132;
+ else
+ ma+=80;
+ }
+ return 0;
+}
+
+
+/* F4 Character Displayer */
+static const gfx_layout vta2000_charlayout =
+{
+ 8, 16, /* 8 x 16 characters */
+ 512, /* 128 characters */
+ 1, /* 1 bits per pixel */
+ { 0 }, /* no bitplanes */
+ /* x offsets */
+ { 0, 1, 2, 3, 4, 5, 6, 7 },
+ /* y offsets */
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
+ 8*16 /* every char takes 16 bytes */
+};
+
+static GFXDECODE_START( vta2000 )
+ GFXDECODE_ENTRY( "chargen", 0x0000, vta2000_charlayout, 0, 1 )
+GFXDECODE_END
+
+PALETTE_INIT_MEMBER(vta2000_state, vta2000)
+{
+ palette.set_pen_color(0, rgb_t::black); // black
+ palette.set_pen_color(1, 0x00, 0xc0, 0x00); // green
+ palette.set_pen_color(2, 0x00, 0xff, 0x00); // highlight
+}
+
+static MACHINE_CONFIG_START( vta2000, vta2000_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",I8080, XTAL_4MHz / 4)
+ MCFG_CPU_PROGRAM_MAP(vta2000_mem)
+ MCFG_CPU_IO_MAP(vta2000_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(80*8, 25*12)
+ MCFG_SCREEN_VISIBLE_AREA(0, 80*8-1, 0, 25*12-1)
+ MCFG_SCREEN_UPDATE_DRIVER(vta2000_state, screen_update_vta2000)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD("palette", 3)
+ MCFG_PALETTE_INIT_OWNER(vta2000_state, vta2000)
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", vta2000)
+MACHINE_CONFIG_END
+
+
+/* ROM definition */
+ROM_START( vta2000 )
+ ROM_REGION( 0x6000, "roms", 0 )
+ ROM_LOAD( "bdp-15_11.rom", 0x4000, 0x2000, CRC(d4abe3e9) SHA1(ab1973306e263b0f66f2e1ede50cb5230f8d69d5) )
+ ROM_LOAD( "bdp-15_12.rom", 0x2000, 0x2000, CRC(4a5fe332) SHA1(f1401c26687236184fec0558cc890e796d7d5c77) )
+ ROM_LOAD( "bdp-15_13.rom", 0x0000, 0x2000, CRC(b6b89d90) SHA1(0356d7ba77013b8a79986689fb22ef4107ef885b) )
+
+ ROM_REGION(0x2000, "chargen", ROMREGION_INVERT )
+ ROM_LOAD( "bdp-15_14.rom", 0x0000, 0x2000, CRC(a1dc4f8e) SHA1(873fd211f44713b713d73163de2d8b5db83d2143) )
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 19??, vta2000, 0, 0, vta2000, vta2000, driver_device, 0, "<unknown>", "VTA-2000", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )