mcr2.c

这个是延伸mame的在wince平台下的游戏模拟器的代码

	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* IN4 -- player 2 spinner */
	PORT_ANALOG( 0xff, 0x00, IPT_DIAL | IPF_REVERSE | IPF_PLAYER2, 10, 0, 0, 0 )

	PORT_START	/* AIN0 */
	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNKNOWN )
INPUT_PORTS_END


/***************************************************************************

  Graphics layouts

***************************************************************************/

/* note that characters are half the resolution of sprites in each direction, so we generate
   them at double size */

/* 512 characters; used by all the mcr2 games */
static struct GfxLayout mcr2_charlayout_512 =
{
	16, 16,
	512,
	4,
	{ 512*16*8, 512*16*8+1, 0, 1 },
	{ 0, 0, 2, 2, 4, 4, 6, 6, 8, 8, 10, 10, 12, 12, 14, 14 },
	{ 0, 0, 2*8, 2*8, 4*8, 4*8, 6*8, 6*8, 8*8, 8*8, 10*8, 10*8, 12*8, 12*8, 14*8, 14*8 },
	16*8
};

/* 64 sprites; used by all mcr2 games but Journey */
#define X (64*128*8)
#define Y (2*X)
#define Z (3*X)
static struct GfxLayout mcr2_spritelayout_64 =
{
   32,32,
   64,
   4,
   { 0, 1, 2, 3 },
   {  Z+0, Z+4, Y+0, Y+4, X+0, X+4, 0, 4, Z+8, Z+12, Y+8, Y+12, X+8, X+12, 8, 12,
      Z+16, Z+20, Y+16, Y+20, X+16, X+20, 16, 20, Z+24, Z+28, Y+24, Y+28,
      X+24, X+28, 24, 28 },
   {  0, 32, 32*2, 32*3, 32*4, 32*5, 32*6, 32*7, 32*8, 32*9, 32*10, 32*11,
      32*12, 32*13, 32*14, 32*15, 32*16, 32*17, 32*18, 32*19, 32*20, 32*21,
      32*22, 32*23, 32*24, 32*25, 32*26, 32*27, 32*28, 32*29, 32*30, 32*31 },
   128*8
};
#undef X
#undef Y
#undef Z

/* 128 sprites; used by Journey - it features an mcr3 spriteboard */
#define X (128*128*8)
#define Y (2*X)
#define Z (3*X)
static struct GfxLayout mcr3_spritelayout_128 =
{
   32,32,
   128,
   4,
   { 0, 1, 2, 3 },
   {  Z+0, Z+4, Y+0, Y+4, X+0, X+4, 0, 4, Z+8, Z+12, Y+8, Y+12, X+8, X+12, 8, 12,
      Z+16, Z+20, Y+16, Y+20, X+16, X+20, 16, 20, Z+24, Z+28, Y+24, Y+28,
      X+24, X+28, 24, 28 },
   {  0, 32, 32*2, 32*3, 32*4, 32*5, 32*6, 32*7, 32*8, 32*9, 32*10, 32*11,
      32*12, 32*13, 32*14, 32*15, 32*16, 32*17, 32*18, 32*19, 32*20, 32*21,
      32*22, 32*23, 32*24, 32*25, 32*26, 32*27, 32*28, 32*29, 32*30, 32*31 },
   128*8
};
#undef X
#undef Y
#undef Z

static struct GfxDecodeInfo mcr2_gfxdecodeinfo[] =
{
	{ 1, 0x0000, &mcr2_charlayout_512,   0, 4 },	/* colors 0-63 */
	{ 1, 0x4000, &mcr2_spritelayout_64, 16, 1 },	/* colors 16-31 */
	{ -1 } /* end of array */
};

/* Wacko uses different colors for the sprites */
static struct GfxDecodeInfo wacko_gfxdecodeinfo[] =
{
	{ 1, 0x0000, &mcr2_charlayout_512,   0, 4 },	/* colors 0-63 */
	{ 1, 0x4000, &mcr2_spritelayout_64,  0, 1 },	/* colors 0-15 */
	{ -1 } /* end of array */
};

static struct GfxDecodeInfo journey_gfxdecodeinfo[] =
{
	{ 1, 0x0000, &mcr2_charlayout_512,   0, 4 },	/* colors 0-63 */
	{ 1, 0x4000, &mcr3_spritelayout_128, 0, 4 },	/* colors 0-63 */
	{ -1 } /* end of array */
};


/***************************************************************************

  Sound interfaces

***************************************************************************/

static struct AY8910interface ay8910_interface =
{
	2,	/* 2 chips */
	2000000,	/* 2 MHz ?? */
	{ 255, 255 },
	{ 0 },
	{ 0 },
	{ 0 },
	{ 0 }
};


/***************************************************************************

  Machine drivers

***************************************************************************/

static struct MachineDriver mcr2_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			2500000,	/* 2.5 Mhz */
			0,
			mcr2_readmem,mcr2_writemem,readport,writeport,
			mcr_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			2000000,	/* 2 Mhz */
			2,	/* memory region #2 */
			sound_readmem,sound_writemem,0,0,
			interrupt,26
		}
	},
	30, DEFAULT_30HZ_VBLANK_DURATION,	/* frames per second, vblank duration */
	1,	/* 1 CPU slice per frame - sound CPU has enough interrupts to handle synchronization */
	mcr_init_machine,

	/* video hardware */
	32*16, 30*16, { 0, 32*16-1, 0, 30*16-1 },
	mcr2_gfxdecodeinfo,
	64, 64,
	0,

	VIDEO_TYPE_RASTER|VIDEO_SUPPORTS_DIRTY|VIDEO_MODIFIES_PALETTE,
	0,
	generic_vh_start,
	generic_vh_stop,
	mcr2_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_AY8910,
			&ay8910_interface
		}
	}
};

static struct MachineDriver wacko_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			2500000,	/* 2.5 Mhz */
			0,
			mcr2_readmem,mcr2_writemem,readport,writeport,
			mcr_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			2000000,	/* 2 Mhz */
			2,	/* memory region #2 */
			sound_readmem,sound_writemem,0,0,
			interrupt,26
		}
	},
	30, DEFAULT_30HZ_VBLANK_DURATION,	/* frames per second, vblank duration */
	1,	/* 1 CPU slice per frame - sound CPU has enough interrupts to handle synchronization */
	mcr_init_machine,

	/* video hardware */
	32*16, 30*16, { 0, 32*16-1, 0, 30*16-1 },
	wacko_gfxdecodeinfo,
	64, 64,
	0,

	VIDEO_TYPE_RASTER|VIDEO_SUPPORTS_DIRTY|VIDEO_MODIFIES_PALETTE,
	0,
	generic_vh_start,
	generic_vh_stop,
	mcr2_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_AY8910,
			&ay8910_interface
		}
	}
};

static struct MachineDriver kroozr_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			2500000,	/* 2.5 Mhz */
			0,
			mcr2_readmem,mcr2_writemem,kroozr_readport,writeport,
			mcr_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			2000000,	/* 2 Mhz */
			2,	/* memory region #2 */
			sound_readmem,sound_writemem,0,0,
			interrupt,26
		}
	},
	30, DEFAULT_30HZ_VBLANK_DURATION,	/* frames per second, vblank duration */
	1,	/* 1 CPU slice per frame - sound CPU has enough interrupts to handle synchronization */
	mcr_init_machine,

	/* video hardware */
	32*16, 30*16, { 0, 32*16-1, 0, 30*16-1 },
	mcr2_gfxdecodeinfo,
	64, 64,
	0,

	VIDEO_TYPE_RASTER|VIDEO_SUPPORTS_DIRTY|VIDEO_MODIFIES_PALETTE,
	0,
	generic_vh_start,
	generic_vh_stop,
	mcr2_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_AY8910,
			&ay8910_interface
		}
	}
};

static struct MachineDriver journey_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			7500000,	/* Looks like it runs at 7.5 Mhz rather than 5 or 2.5 */
			0,
			journey_readmem,journey_writemem,readport,writeport,
			mcr_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			2000000,	/* 2 Mhz */
			2,	/* memory region #2 */
			sound_readmem,sound_writemem,0,0,
			interrupt,26
		}
	},
	30, DEFAULT_30HZ_VBLANK_DURATION,	/* frames per second, vblank duration */
	1,	/* 1 CPU slice per frame - sound CPU has enough interrupts to handle synchronization */
	mcr_init_machine,

	/* video hardware */
	32*16, 30*16, { 0, 32*16-1, 0, 30*16-1 },
	journey_gfxdecodeinfo,
	64, 64,
	0,

	VIDEO_TYPE_RASTER|VIDEO_SUPPORTS_DIRTY|VIDEO_MODIFIES_PALETTE,
	0,
	journey_vh_start,
	generic_vh_stop,
	journey_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_AY8910,
			&ay8910_interface
		}
	}
};


/***************************************************************************

  High score save/load

***************************************************************************/

static int mcr2_hiload(int addr, int len)
{
   unsigned char *RAM = Machine->memory_region[0];

   /* see if it's okay to load */
   if (mcr_loadnvram)
   {
      void *f;

		f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0);
      if (f)
      {
			osd_fread(f,&RAM[addr],len);
			osd_fclose (f);
      }
      return 1;
   }
   else return 0;	/* we can't load the hi scores yet */
}

static void mcr2_hisave(int addr, int len)
{
   unsigned char *RAM = Machine->memory_region[0];
   void *f;

	f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1);
   if (f)
   {
      osd_fwrite(f,&RAM[addr],len);
      osd_fclose (f);
   }
}

static int  shollow_hiload(void)  { return mcr2_hiload(0xc600, 0x8a); }
static void shollow_hisave(void)  {        mcr2_hisave(0xc600, 0x8a); }

static int  tron_hiload(void)     { return mcr2_hiload(0xc4f0, 0x97); }
static void tron_hisave(void)     {        mcr2_hisave(0xc4f0, 0x97); }

static int  kroozr_hiload(void)   { return mcr2_hiload(0xc466, 0x95); }
static void kroozr_hisave(void)   {        mcr2_hisave(0xc466, 0x95); }

static int  domino_hiload(void)   { return mcr2_hiload(0xc000, 0x92); }
static void domino_hisave(void)   {        mcr2_hisave(0xc000, 0x92); }

static int  wacko_hiload(void)    { return mcr2_hiload(0xc000, 0x91); }
static void wacko_hisave(void)    {        mcr2_hisave(0xc000, 0x91); }

static int  twotiger_hiload(void) { return mcr2_hiload(0xc000, 0xa0); }
static void twotiger_hisave(void) {        mcr2_hisave(0xc000, 0xa0); }

static int  journey_hiload(void)  { return mcr2_hiload(0xc000, 0x9e); }
static void journey_hisave(void)  {        mcr2_hisave(0xc000, 0x9e); }


/***************************************************************************

  Game driver(s)

***************************************************************************/

ROM_START( shollow_rom )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "sh-pro.00",    0x0000, 0x2000, 0x95e2b800 )
	ROM_LOAD( "sh-pro.01",    0x2000, 0x2000, 0xb99f6ff8 )
	ROM_LOAD( "sh-pro.02",    0x4000, 0x2000, 0x1202c7b2 )
	ROM_LOAD( "sh-pro.03",    0x6000, 0x2000, 0x0a64afb9 )
	ROM_LOAD( "sh-pro.04",    0x8000, 0x2000, 0x22fa9175 )
	ROM_LOAD( "sh-pro.05",    0xa000, 0x2000, 0x1716e2bb )

	ROM_REGION_DISPOSE(0x0c000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "sh-bg.00",     0x00000, 0x2000, 0x3e2b333c )
	ROM_LOAD( "sh-bg.01",     0x02000, 0x2000, 0xd1d70cc4 )
	ROM_LOAD( "sh-fg.03",     0x04000, 0x2000, 0x37ea9d07 )