mirror of
https://github.com/holub/mame
synced 2025-06-27 22:54:42 +03:00
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/***************************************************************************
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Schleicher MES
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30/08/2010 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 mes_state : public driver_device
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{
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public:
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mes_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_maincpu(*this, "maincpu"),
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m_p_videoram(*this, "p_videoram"){ }
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required_device<cpu_device> m_maincpu;
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const UINT8 *m_p_chargen;
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required_shared_ptr<const UINT8> m_p_videoram;
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virtual void machine_reset();
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virtual void video_start();
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UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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};
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static ADDRESS_MAP_START(mes_mem, AS_PROGRAM, 8, mes_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x0000, 0x0fff) AM_ROM
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AM_RANGE(0x1000, 0xefff) AM_RAM
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AM_RANGE(0xf000, 0xffff) AM_RAM AM_SHARE("p_videoram")
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( mes_io, AS_IO, 8, mes_state)
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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( mes )
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INPUT_PORTS_END
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void mes_state::machine_reset()
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{
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}
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void mes_state::video_start()
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{
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m_p_chargen = memregion("chargen")->base();
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}
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/* This system appears to have 2 screens. Not implemented.
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Also the screen dimensions are a guess. */
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UINT32 mes_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
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{
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//static UINT8 framecnt=0;
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UINT8 y,ra,chr,gfx;
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UINT16 sy=0,ma=0,x,xx;
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//framecnt++;
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for (y = 0; y < 25; y++)
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{
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for (ra = 0; ra < 10; ra++)
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{
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UINT16 *p = &bitmap.pix16(sy++);
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xx = ma;
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for (x = ma; x < ma + 80; x++)
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{
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gfx = 0;
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if (ra < 9)
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{
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chr = m_p_videoram[xx++];
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// /* Take care of flashing characters */
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// if ((chr < 0x80) && (framecnt & 0x08))
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// chr |= 0x80;
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if (chr & 0x80) // ignore attribute bytes
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x--;
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else
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gfx = m_p_chargen[(chr<<4) | ra ];
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}
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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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static MACHINE_CONFIG_START( mes, mes_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu", Z80, XTAL_16MHz / 4)
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MCFG_CPU_PROGRAM_MAP(mes_mem)
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MCFG_CPU_IO_MAP(mes_io)
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/* video hardware */
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MCFG_SCREEN_ADD("screen", RASTER)
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MCFG_SCREEN_REFRESH_RATE(60)
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MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
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MCFG_SCREEN_UPDATE_DRIVER(mes_state, screen_update)
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MCFG_SCREEN_SIZE(640, 250)
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MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 249)
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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( mes )
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ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
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ROM_LOAD( "mescpu.bin", 0x0000, 0x1000, CRC(b6d90cf4) SHA1(19e608af5bdaabb00a134e1106b151b00e2a0b04))
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ROM_REGION( 0x10000, "xebec", ROMREGION_ERASEFF )
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ROM_LOAD( "mesxebec.bin", 0x0000, 0x2000, CRC(061b7212) SHA1(c5d600116fb7563c69ebd909eb9613269b2ada0f))
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/* character generator not dumped, using the one from 'c10' for now */
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ROM_REGION( 0x2000, "chargen", 0 )
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ROM_LOAD( "c10_char.bin", 0x0000, 0x2000, BAD_DUMP CRC(cb530b6f) SHA1(95590bbb433db9c4317f535723b29516b9b9fcbf))
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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( 198?, mes, 0, 0, mes, mes, driver_device, 0, "Schleicher", "MES", GAME_NOT_WORKING | GAME_NO_SOUND)
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