dec0.c

这个是延伸mame的在wince平台下的游戏模拟器的代码

			8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	16*16
};

static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ 1, 0x000000, &charlayout,   0, 16 },	/* Characters 8x8 */
	{ 1, 0x020000, &tilelayout, 512, 16 },	/* Tiles 16x16 */
	{ 1, 0x0a0000, &tilelayout, 768, 16 },	/* Tiles 16x16 */
	{ 1, 0x120000, &tilelayout, 256, 16 },	/* Sprites 16x16 */
	{ -1 } /* end of array */
};

static struct GfxDecodeInfo midres_gfxdecodeinfo[] =
{
	{ 1, 0x000000, &charlayout, 256, 16 },	/* Characters 8x8 */
	{ 1, 0x020000, &tilelayout, 512, 16 },	/* Tiles 16x16 */
	{ 1, 0x0a0000, &tilelayout, 768, 16 },	/* Tiles 16x16 */
	{ 1, 0x120000, &tilelayout,   0, 16 },	/* Sprites 16x16 */
	{ -1 } /* end of array */
};

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

static void sound_irq(void)
{
	cpu_cause_interrupt(1,M6502_INT_IRQ);
}

static struct YM2203interface ym2203_interface =
{
	1,
	1500000,	/* 1.50 MHz */
	{ YM2203_VOL(140,255) },
	{ 0 },
	{ 0 },
	{ 0 },
	{ 0 }
};

static struct YM3812interface ym3812_interface =
{
	1,			/* 1 chip (no more supported) */
	3250000,	/* 3.25 MHz ? (hand tuned) */
	{ 255 },	/* (not supported) */
	sound_irq,
};

static struct OKIM6295interface okim6295_interface =
{
	1,              /* 1 chip */
	8000,           /* 8000Hz frequency */
	3,              /* memory region 3 */
	{ 255 }
};

static struct ADPCMinterface adpcm_interface =
{
	1,			/* 1 chip */
	8000,   /* 8000Hz playback */
	3,			/* memory region 3 */
	0,			/* init function */
	{ 255 }
};

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

static struct MachineDriver hbarrel_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_M68000,
			10000000,
			0,
			dec0_readmem,dec0_writemem,0,0,
			m68_level6_irq,1 /* VBL, level 5 interrupts from i8751 */
		},
		{
			CPU_M6502 | CPU_AUDIO_CPU,
			900000,
			2,
			dec0_s_readmem,dec0_s_writemem,0,0,
			ignore_interrupt,0
		}
	},
	57, 1536, /* frames per second, vblank duration taken from Burger Time */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,

	/* video hardware */
 	32*8, 32*8, { 0*8, 32*8-1, 1*8, 31*8-1 },

	gfxdecodeinfo,
	1024, 1024,
	0,

	VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE,
	0,
	dec0_vh_start,
	dec0_vh_stop,
	hbarrel_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_YM2203,
			&ym2203_interface
		},
		{
			SOUND_YM3812,
			&ym3812_interface
		},
		{
			SOUND_OKIM6295,
			&okim6295_interface
		}
	}
};

static struct MachineDriver baddudes_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_M68000,
			10000000,
			0,
			dec0_readmem,dec0_writemem,0,0,
			m68_level6_irq,1 /* VBL, level 5 interrupts from i8751 */
		},
		{
			CPU_M6502 | CPU_AUDIO_CPU,
			1250000,
			2,
			dec0_s_readmem,dec0_s_writemem,0,0,
			ignore_interrupt,0
		}
	},
	57, 1536, /* frames per second, vblank duration taken from Burger Time */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,

	/* video hardware */
 	32*8, 64*8, { 0*8, 32*8-1, 1*8, 31*8-1 },

	gfxdecodeinfo,
	1024, 1024,
	0,

	VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE,
	0,
	dec0_vh_start,
	dec0_vh_stop,
	dec0_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_YM2203,
			&ym2203_interface
		},
		{
			SOUND_YM3812,
			&ym3812_interface
		},
		{
			SOUND_OKIM6295,
			&okim6295_interface
		}
	}
};

static struct MachineDriver robocop_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_M68000,
			10000000,
			0,
			dec0_readmem,dec0_writemem,0,0,
			m68_level6_irq,1 /* VBL */
		},
		{
			CPU_M6502 | CPU_AUDIO_CPU,
			1250000,
			2,
			dec0_s_readmem,dec0_s_writemem,0,0,
			ignore_interrupt,0
		}
	},
	57, 1536, /* frames per second, vblank duration taken from Burger Time */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,

	/* video hardware */
	32*8, 32*8, { 0*8, 32*8-1, 1*8, 31*8-1 },

	gfxdecodeinfo,
	1024, 1024,
	0,

	VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE,
	0,
	dec0_vh_start,
	dec0_vh_stop,
	robocop_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_YM2203,
			&ym2203_interface
		},
		{
			SOUND_YM3812,
			&ym3812_interface
		},
		{
			SOUND_OKIM6295,
			&okim6295_interface
		}
	}
};

static struct MachineDriver hippodrm_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_M68000,
			10000000,
			0,
			dec0_readmem,dec0_writemem,0,0,
			m68_level6_irq,1 /* VBL */
		},
		{
			CPU_M6502 | CPU_AUDIO_CPU,
			1200000,
			2,
			dec0_s_readmem,dec0_s_writemem,0,0,
			ignore_interrupt,0
		},
#if 0
		{
			CPU_M6502,
			1000000,
			4,
			hippo_sub_readmem,hippo_sub_writemem,0,0,
			ignore_interrupt,0
		}
#endif
	},
	57, 1536, /* frames per second, vblank duration taken from Burger Time */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,

	/* video hardware */
 	32*8, 32*8, { 0*8, 32*8-1, 1*8, 31*8-1 },

	gfxdecodeinfo,
	1024, 1024,
	0,

	VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE,
	0,
	dec0_vh_start,
	dec0_vh_stop,
	hippodrm_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_YM2203,
			&ym2203_interface
		},
		{
			SOUND_YM3812,
			&ym3812_interface
		},
		{
			SOUND_OKIM6295,
			&okim6295_interface
		}
	}
};

static struct MachineDriver midres_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_M68000,
			10000000,
			0,
			midres_readmem,midres_writemem,0,0,
			m68_level6_irq,1 /* VBL */
		},
#if 0
		{
			CPU_M6502 | CPU_AUDIO_CPU,
			1000000,
			2,
			dec1_s_readmem,dec1_s_writemem,0,0,
			ignore_interrupt,0
		}
#endif
	},
	57, 1536, /* frames per second, vblank duration taken from Burger Time */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,

	/* video hardware */
	32*8, 32*8, { 0*8, 32*8-1, 1*8, 31*8-1 },

	midres_gfxdecodeinfo,
	1024, 1024,
	0,

	VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE,
	0,
	dec0_vh_start,
	dec0_vh_stop,
	midres_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_ADPCM,
			&adpcm_interface
		},
		{
			SOUND_YM3812,
			&ym3812_interface
		}
	}
};

static struct MachineDriver slyspy_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_M68000,
			10000000,
			0,
			slyspy_readmem,slyspy_writemem,0,0,
			m68_level6_irq,1 /* VBL */
		},
#if 0
		{
			CPU_M6502 | CPU_AUDIO_CPU,
			1000000,
			2,
			dec1_s_readmem,dec1_s_writemem,0,0,
			interrupt,1
		}
#endif
	},
	57, 1536, /* frames per second, vblank duration taken from Burger Time */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,