frogger.c

这个是延伸mame的在wince平台下的游戏模拟器的代码

static struct MachineDriver machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			18432000/6,	/* 3.072 Mhz */
			0,
			readmem,writemem,0,0,
			nmi_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			14318000/8,	/* 1.78975 Mhz */
			3,	/* memory region #3 */
			sound_readmem,sound_writemem,sound_readport,sound_writeport,
			ignore_interrupt,1	/* interrupts are triggered by the main CPU */
		}
	},
	60, 2500,	/* frames per second, vblank duration */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,

	/* video hardware */
	32*8, 32*8, { 2*8, 30*8-1, 0*8, 32*8-1 },
	gfxdecodeinfo,
	32,64,
	frogger_vh_convert_color_prom,

	VIDEO_TYPE_RASTER,
	0,
	generic_vh_start,
	generic_vh_stop,
	frogger_vh_screenrefresh,

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

static struct MachineDriver frogger2_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			18432000/6,	/* 3.072 Mhz */
			0,
			frogger2_readmem,frogger2_writemem,0,0,
			nmi_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			14318000/8,	/* 1.78975 Mhz */
			3,	/* memory region #3 */
			sound_readmem,sound_writemem,sound_readport,sound_writeport,
			ignore_interrupt,1	/* interrupts are triggered by the main CPU */
		}
	},
	60, 2500,	/* frames per second, vblank duration */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,

	/* video hardware */
	32*8, 32*8, { 2*8, 30*8-1, 0*8, 32*8-1 },
	gfxdecodeinfo,
	32,64,
	frogger_vh_convert_color_prom,

	VIDEO_TYPE_RASTER,
	0,
	generic_vh_start,
	generic_vh_stop,
	frogger2_vh_screenrefresh,

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



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

  Game driver(s)

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

ROM_START( frogger_rom )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "frogger.ic5",  0x0000, 0x1000, 0xefab0c79 )
	ROM_LOAD( "frogger.ic6",  0x1000, 0x1000, 0xaeca9c13 )
	ROM_LOAD( "frogger.ic7",  0x2000, 0x1000, 0xdd251066 )
	ROM_LOAD( "frogger.ic8",  0x3000, 0x1000, 0xbf293a02 )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "frogger.606",  0x0000, 0x0800, 0xf524ee30 )
	ROM_LOAD( "frogger.607",  0x0800, 0x0800, 0x05f7d883 )

	ROM_REGION(0x0020)	/* color PROMs */
	ROM_LOAD( "pr-91.6l",     0x0000, 0x0020, 0x413703bf )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "frogger.608",  0x0000, 0x0800, 0xe8ab0256 )
	ROM_LOAD( "frogger.609",  0x0800, 0x0800, 0x7380a48f )
	ROM_LOAD( "frogger.610",  0x1000, 0x0800, 0x31d7eb27 )
ROM_END

ROM_START( frogsega_rom )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "frogger.26",   0x0000, 0x1000, 0x597696d6 )
	ROM_LOAD( "frogger.27",   0x1000, 0x1000, 0xb6e6fcc3 )
	ROM_LOAD( "frogger.34",   0x2000, 0x1000, 0xed866bab )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "frogger.606",  0x0000, 0x0800, 0xf524ee30 )
	ROM_LOAD( "frogger.607",  0x0800, 0x0800, 0x05f7d883 )

	ROM_REGION(0x0020)	/* color PROMs */
	ROM_LOAD( "pr-91.6l",     0x0000, 0x0020, 0x413703bf )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "frogger.608",  0x0000, 0x0800, 0xe8ab0256 )
	ROM_LOAD( "frogger.609",  0x0800, 0x0800, 0x7380a48f )
	ROM_LOAD( "frogger.610",  0x1000, 0x0800, 0x31d7eb27 )
ROM_END

ROM_START( frogger2_rom )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "epr-1031.15",  0x0000, 0x1000, 0x4b7c8d11 )
	ROM_LOAD( "epr-1032.16",  0x1000, 0x1000, 0xac00b9d9 )
	ROM_LOAD( "epr-1033.33",  0x2000, 0x1000, 0xbc1d6fbc )
	ROM_LOAD( "epr-1034.34",  0x3000, 0x1000, 0x9efe7399 )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "epr-1036.1k",  0x0000, 0x0800, 0x658745f8 )
	ROM_LOAD( "epr-1037.1h",  0x0800, 0x0800, 0x05f7d883 )

	ROM_REGION(0x0020)	/* color PROMs */
	ROM_LOAD( "pr-91.6l",     0x0000, 0x0020, 0x413703bf )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "epr-1082.42",  0x0000, 0x1000, 0x802843c2 )
	ROM_LOAD( "epr-1035.43",  0x1000, 0x0800, 0x14e74148 )
ROM_END



static void frogger_decode(void)
{
	int A;
	unsigned char *RAM;


	/* the first ROM of the second CPU has data lines D0 and D1 swapped. Decode it. */
	RAM = Machine->memory_region[Machine->drv->cpu[1].memory_region];
	for (A = 0;A < 0x0800;A++)
		RAM[A] = (RAM[A] & 0xfc) | ((RAM[A] & 1) << 1) | ((RAM[A] & 2) >> 1);

	/* likewise, the first gfx ROM has data lines D0 and D1 swapped. Decode it. */
	RAM = Machine->memory_region[1];
	for (A = 0;A < 0x0800;A++)
		RAM[A] = (RAM[A] & 0xfc) | ((RAM[A] & 1) << 1) | ((RAM[A] & 2) >> 1);
}

static void frogger2_decode(void)
{
	int A;
	unsigned char *RAM;


	/* the first ROM of the second CPU has data lines D0 and D1 swapped. Decode it. */
	RAM = Machine->memory_region[Machine->drv->cpu[1].memory_region];
	for (A = 0;A < 0x1000;A++)
		RAM[A] = (RAM[A] & 0xfc) | ((RAM[A] & 1) << 1) | ((RAM[A] & 2) >> 1);
}



static int hiload(void)
{
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	/* check if the hi score table has already been initialized */
	if (memcmp(&RAM[0x83f1],"\x63\x04",2) == 0 &&
			memcmp(&RAM[0x83f9],"\x27\x01",2) == 0)
	{
		void *f;


		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			osd_fread(f,&RAM[0x83f1],2*5);
			RAM[0x83ef] = RAM[0x83f1];
			RAM[0x83f0] = RAM[0x83f2];
			osd_fclose(f);
		}

		return 1;
	}
	else return 0;	/* we can't load the hi scores yet */
}

static void hisave(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
	{
		osd_fwrite(f,&RAM[0x83f1],2*5);
		osd_fclose(f);
	}
}



struct GameDriver frogger_driver =
{
	__FILE__,
	0,
	"frogger",
	"Frogger (set 1)",
	"1981",
	"Sega",
	"Robert Anschuetz\nNicola Salmoria\nMirko Buffoni\nGerald Vanderick (color info)\nMarco Cassili",
	0,
	&machine_driver,
	0,

	frogger_rom,
	frogger_decode, 0,
	0,
	0,	/* sound_prom */

	input_ports,

	PROM_MEMORY_REGION(2), 0, 0,
	ORIENTATION_DEFAULT,

	hiload, hisave
};

struct GameDriver frogsega_driver =
{
	__FILE__,
	&frogger_driver,
	"frogsega",
	"Frogger (set 2)",
	"1981",
	"Sega",
	"Robert Anschuetz\nNicola Salmoria\nMirko Buffoni\nGerald Vanderick (color info)\nMarco Cassili",
	0,
	&machine_driver,
	0,

	frogsega_rom,
	frogger_decode, 0,
	0,
	0,	/* sound_prom */

	input_ports,

	PROM_MEMORY_REGION(2), 0, 0,
	ORIENTATION_DEFAULT,

	hiload, hisave
};

/* this version runs on modified Moon Cresta hardware */
struct GameDriver frogger2_driver =
{
	__FILE__,
	&frogger_driver,
	"frogger2",
	"Frogger (modified Moon Cresta hardware)",
	"1981",
	"bootleg?",
	"Robert Anschuetz\nNicola Salmoria\nMirko Buffoni\nGerald Vanderick (color info)\nMarco Cassili",
	0,
	&frogger2_machine_driver,
	0,

	frogger2_rom,
	frogger2_decode, 0,
	0,
	0,	/* sound_prom */

	frogger2_input_ports,

	PROM_MEMORY_REGION(2), 0, 0,
	ORIENTATION_DEFAULT,

	hiload, hisave
};