mirror of
https://github.com/holub/mame
synced 2025-05-12 09:08:53 +03:00
144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/***************************************************************************
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Mera-Elzab 79152pc
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This is terminal
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29/12/2011 Skeleton driver.
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****************************************************************************/
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#include "emu.h"
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#include "cpu/z80/z80.h"
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class m79152pc_state : public driver_device
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{
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public:
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m79152pc_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_p_videoram(*this, "p_videoram"),
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m_p_attributes(*this, "p_attributes"),
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m_maincpu(*this, "maincpu") { }
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UINT8 *m_p_chargen;
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required_shared_ptr<UINT8> m_p_videoram;
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required_shared_ptr<UINT8> m_p_attributes;
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virtual void machine_reset();
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virtual void video_start();
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UINT32 screen_update_m79152pc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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required_device<cpu_device> m_maincpu;
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};
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static ADDRESS_MAP_START(m79152pc_mem, AS_PROGRAM, 8, m79152pc_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x0000, 0x3fff) AM_ROM
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AM_RANGE(0x4000, 0x47ff) AM_RAM
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AM_RANGE(0x8000, 0x8fff) AM_RAM AM_SHARE("p_videoram")
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AM_RANGE(0x9000, 0x9fff) AM_RAM AM_SHARE("p_attributes")
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( m79152pc_io, AS_IO, 8, m79152pc_state)
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//ADDRESS_MAP_UNMAP_HIGH
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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ADDRESS_MAP_END
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/* Input ports */
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static INPUT_PORTS_START( m79152pc )
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INPUT_PORTS_END
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void m79152pc_state::machine_reset()
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{
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}
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void m79152pc_state::video_start()
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{
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m_p_chargen = memregion("chargen")->base()+4;
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}
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UINT32 m79152pc_state::screen_update_m79152pc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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// Attributes are unknown so are not implemented
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UINT8 y,ra,chr,gfx; //,attr;
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UINT16 sy=0,ma=0,x;
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for (y = 0; y < 25; y++)
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{
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for (ra = 0; ra < 12; ra++)
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{
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UINT16 *p = &bitmap.pix16(sy++);
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for (x = ma; x < ma + 80; x++)
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{
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chr = m_p_videoram[x];
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//attr = m_p_attributes[x];
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gfx = m_p_chargen[(chr<<4) | ra ];
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/* Display a scanline of a character */
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*p++ = BIT(gfx, 7);
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*p++ = BIT(gfx, 6);
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*p++ = BIT(gfx, 5);
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*p++ = BIT(gfx, 4);
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*p++ = BIT(gfx, 3);
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*p++ = BIT(gfx, 2);
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*p++ = BIT(gfx, 1);
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*p++ = BIT(gfx, 0);
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}
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}
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ma+=80;
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}
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return 0;
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}
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/* F4 Character Displayer */
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static const gfx_layout m79152pc_charlayout =
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{
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8, 12, /* 8 x 16 characters */
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256, /* 256 characters */
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1, /* 1 bits per pixel */
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{ 0 }, /* no bitplanes */
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/* x offsets */
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{ 0, 1, 2, 3, 4, 5, 6, 7 },
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/* y offsets */
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{ 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
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8*16 /* every char takes 16 bytes */
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};
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static GFXDECODE_START( m79152pc )
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GFXDECODE_ENTRY( "chargen", 0x0000, m79152pc_charlayout, 0, 1 )
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GFXDECODE_END
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static MACHINE_CONFIG_START( m79152pc, m79152pc_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
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MCFG_CPU_PROGRAM_MAP(m79152pc_mem)
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MCFG_CPU_IO_MAP(m79152pc_io)
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/* video hardware */
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MCFG_SCREEN_ADD("screen", RASTER)
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MCFG_SCREEN_REFRESH_RATE(50)
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MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
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MCFG_SCREEN_SIZE(640, 300)
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MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 300-1)
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MCFG_SCREEN_UPDATE_DRIVER(m79152pc_state, screen_update_m79152pc)
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MCFG_GFXDECODE(m79152pc)
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MCFG_PALETTE_LENGTH(2)
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MCFG_PALETTE_INIT(black_and_white)
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MACHINE_CONFIG_END
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/* ROM definition */
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ROM_START( m79152pc )
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ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
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ROM_LOAD( "left.bin", 0x0000, 0x4000, CRC(8cd677fc) SHA1(7ad28f3ba984383f24a36639ca27fc1eb5a5d002))
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ROM_REGION( 0x1800, "chargen", ROMREGION_INVERT )
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ROM_LOAD( "right.bin", 0x0000, 0x1000, CRC(93f83fdc) SHA1(e8121b3d175c46c02828f43ec071a7d9c62e7c26)) // chargen
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ROM_LOAD( "char.bin", 0x1000, 0x0800, CRC(da3792a5) SHA1(b4a4f0d61d8082b7909a346a5b01494c53cf8d05)) // unknown
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ROM_END
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/* Driver */
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/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
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COMP( ????, m79152pc, 0, 0, m79152pc, m79152pc, driver_device, 0, "Mera-Elzab", "79152pc", GAME_NOT_WORKING | GAME_NO_SOUND)
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