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Diffstat (limited to 'src/mame/drivers/m79152pc.c')
-rw-r--r--src/mame/drivers/m79152pc.c145
1 files changed, 145 insertions, 0 deletions
diff --git a/src/mame/drivers/m79152pc.c b/src/mame/drivers/m79152pc.c
new file mode 100644
index 00000000000..cf8bf82d908
--- /dev/null
+++ b/src/mame/drivers/m79152pc.c
@@ -0,0 +1,145 @@
+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic
+/***************************************************************************
+
+ Mera-Elzab 79152pc
+
+ This is terminal
+
+ 29/12/2011 Skeleton driver.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+
+class m79152pc_state : public driver_device
+{
+public:
+ m79152pc_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_p_videoram(*this, "p_videoram"),
+ m_p_attributes(*this, "p_attributes"),
+ m_maincpu(*this, "maincpu") { }
+
+ UINT8 *m_p_chargen;
+ required_shared_ptr<UINT8> m_p_videoram;
+ required_shared_ptr<UINT8> m_p_attributes;
+ virtual void machine_reset();
+ virtual void video_start();
+ UINT32 screen_update_m79152pc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ required_device<cpu_device> m_maincpu;
+};
+
+static ADDRESS_MAP_START(m79152pc_mem, AS_PROGRAM, 8, m79152pc_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x3fff) AM_ROM
+ AM_RANGE(0x4000, 0x47ff) AM_RAM
+ AM_RANGE(0x8000, 0x8fff) AM_RAM AM_SHARE("p_videoram")
+ AM_RANGE(0x9000, 0x9fff) AM_RAM AM_SHARE("p_attributes")
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( m79152pc_io, AS_IO, 8, m79152pc_state)
+ //ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( m79152pc )
+INPUT_PORTS_END
+
+
+void m79152pc_state::machine_reset()
+{
+}
+
+void m79152pc_state::video_start()
+{
+ m_p_chargen = memregion("chargen")->base()+4;
+}
+
+UINT32 m79152pc_state::screen_update_m79152pc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+// Attributes are unknown so are not implemented
+ UINT8 y,ra,chr,gfx; //,attr;
+ UINT16 sy=0,ma=0,x;
+
+ for (y = 0; y < 25; y++)
+ {
+ for (ra = 0; ra < 12; ra++)
+ {
+ UINT16 *p = &bitmap.pix16(sy++);
+
+ for (x = ma; x < ma + 80; x++)
+ {
+ chr = m_p_videoram[x];
+ //attr = m_p_attributes[x];
+ 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;
+}
+
+/* F4 Character Displayer */
+static const gfx_layout m79152pc_charlayout =
+{
+ 8, 12, /* 8 x 16 characters */
+ 256, /* 256 characters */
+ 1, /* 1 bits per pixel */
+ { 0 }, /* no bitplanes */
+ /* x offsets */
+ { 0, 1, 2, 3, 4, 5, 6, 7 },
+ /* y offsets */
+ { 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( m79152pc )
+ GFXDECODE_ENTRY( "chargen", 0x0000, m79152pc_charlayout, 0, 1 )
+GFXDECODE_END
+
+static MACHINE_CONFIG_START( m79152pc, m79152pc_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
+ MCFG_CPU_PROGRAM_MAP(m79152pc_mem)
+ MCFG_CPU_IO_MAP(m79152pc_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, 300)
+ MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 300-1)
+ MCFG_SCREEN_UPDATE_DRIVER(m79152pc_state, screen_update_m79152pc)
+ MCFG_SCREEN_PALETTE("palette")
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", m79152pc)
+ MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( m79152pc )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "left.bin", 0x0000, 0x4000, CRC(8cd677fc) SHA1(7ad28f3ba984383f24a36639ca27fc1eb5a5d002))
+
+ ROM_REGION( 0x1800, "chargen", ROMREGION_INVERT )
+ ROM_LOAD( "right.bin", 0x0000, 0x1000, CRC(93f83fdc) SHA1(e8121b3d175c46c02828f43ec071a7d9c62e7c26)) // chargen
+ ROM_LOAD( "char.bin", 0x1000, 0x0800, CRC(da3792a5) SHA1(b4a4f0d61d8082b7909a346a5b01494c53cf8d05)) // unknown
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( ????, m79152pc, 0, 0, m79152pc, m79152pc, driver_device, 0, "Mera-Elzab", "MERA 79152 PC", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)