eprom.c

这个是延伸mame的在wince平台下的游戏模拟器的代码

	{ 0x280c, 0x280c, eprom_6502_switch_r },
	{ 0x280e, 0x280e, MRA_NOP },	/* IRQ ACK */
	{ 0x3000, 0x3fff, MRA_BANK8 },
	{ 0x4000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};


static struct MemoryWriteAddress eprom_sound_writemem[] =
{
	{ 0x0000, 0x1fff, MWA_RAM },
	{ 0x2000, 0x2000, YM2151_register_port_0_w },
	{ 0x2001, 0x2001, YM2151_data_port_0_w },
	{ 0x280e, 0x280e, MWA_NOP },	/* IRQ ACK */
	{ 0x2a00, 0x2a00, eprom_tms5220_w },
	{ 0x2a02, 0x2a02, atarigen_6502_sound_w },
	{ 0x2a04, 0x2a04, eprom_6502_ctl_w },
	{ 0x2a06, 0x2a06, MWA_NOP },	/* mixer */
	{ 0x3000, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};



/*************************************
 *
 *		Extra CPU memory handlers
 *
 *************************************/

static struct MemoryReadAddress eprom_extra_readmem[] =
{
	{ 0x000000, 0x07ffff, MRA_ROM },
	{ 0x16cc00, 0x16cc01, eprom_sync_r, &eprom_sync },
	{ 0x160000, 0x16ffff, MRA_BANK1 },
	{ 0x260000, 0x26001f, eprom_input_r },
	{ 0x260020, 0x26002f, eprom_adc_r },
	{ 0x260030, 0x260033, atarigen_sound_r },
	{ -1 }  /* end of table */
};


static struct MemoryWriteAddress eprom_extra_writemem[] =
{
	{ 0x000000, 0x07ffff, MWA_ROM },
	{ 0x16cc00, 0x16cc01, eprom_sync_w },
	{ 0x160000, 0x16ffff, MWA_BANK1 },
	{ 0x360000, 0x360003, eprom_vblank_ack_w },
	{ 0x360010, 0x360013, eprom_latch_w },
	{ 0x360020, 0x360023, eprom_sound_reset_w },
	{ 0x360030, 0x360033, atarigen_sound_w },
	{ -1 }  /* end of table */
};



/*************************************
 *
 *		Port definitions
 *
 *************************************/

INPUT_PORTS_START( eprom_ports )
	PORT_START		/* 0x26000 high */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER1 )
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START		/* 0x26010 high */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER2 )
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START      /* 0x26010 low */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_VBLANK )
	PORT_BITX(    0x02, 0x02, IPT_DIPSWITCH_NAME | IPF_TOGGLE, "Self Test", OSD_KEY_F2, IP_JOY_NONE, 0 )
	PORT_DIPSETTING(    0x02, "Off")
	PORT_DIPSETTING(    0x00, "On")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )	/* Input buffer full (@260030) */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED ) /* Output buffer full (@360030) */
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED ) /* ADEOC, end of conversion */
	PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* ADC0 @ 0x260020 */
	PORT_ANALOG ( 0xff, 0x80, IPT_AD_STICK_Y | IPF_PLAYER1, 100, 0, 0x10, 0xf0 )

	PORT_START	/* ADC1 @ 0x260022 */
	PORT_ANALOG ( 0xff, 0x80, IPT_AD_STICK_X | IPF_REVERSE | IPF_PLAYER1, 100, 0, 0x10, 0xf0 )

	PORT_START	/* ADC0 @ 0x260024 */
	PORT_ANALOG ( 0xff, 0x80, IPT_AD_STICK_Y | IPF_PLAYER2, 100, 0, 0x10, 0xf0 )

	PORT_START	/* ADC1 @ 0x260026 */
	PORT_ANALOG ( 0xff, 0x80, IPT_AD_STICK_X | IPF_REVERSE | IPF_PLAYER2, 100, 0, 0x10, 0xf0 )

	PORT_START	/* sound switch */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED ) /* speech chip ready */
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED ) /* output buffer full */
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) /* input buffer full */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED ) /* self test */
INPUT_PORTS_END



/*************************************
 *
 *		Graphics definitions
 *
 *************************************/

static struct GfxLayout charlayout =
{
	8,8,	/* 8*8 chars */
	1024,	/* 1024 chars */
	2,		/* 2 bits per pixel */
	{ 0, 4 },
	{ 0, 1, 2, 3, 8, 9, 10, 11 },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
	8*16	/* every char takes 16 consecutive bytes */
};


static struct GfxLayout spritelayout =
{
	8,8,	/* 8*8 sprites */
	32768,	/* 32768 of them */
	4,		/* 4 bits per pixel */
	{ 0*8*0x40000, 1*8*0x40000, 2*8*0x40000, 3*8*0x40000 },
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	8*8	/* every sprite takes 8 consecutive bytes */
};


static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ 1, 0x100000, &charlayout,      0, 64 },		/* characters 8x8 */
	{ 1, 0x000000, &spritelayout,  256, 32 },		/* sprites & playfield */
	{ -1 } /* end of array */
};



/*************************************
 *
 *		Sound definitions
 *
 *************************************/

static struct TMS5220interface tms5220_interface =
{
    640000,     /* clock speed (80*samplerate) */
    100,        /* volume */
    0 /* irq handler */
};


static struct YM2151interface ym2151_interface =
{
	1,			/* 1 chip */
	3579580,	/* 3.58 MHZ ? */
	{ 30 },
	{ 0 }
};



/*************************************
 *
 *		Machine driver
 *
 *************************************/

static struct MachineDriver eprom_machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_M68000,
			7159160,		/* 7.159 Mhz */
			0,
			eprom_readmem,eprom_writemem,0,0,
			eprom_interrupt,1
		},
		{
			CPU_M6502,
			1789790,		/* 1.791 Mhz */
			2,
			eprom_sound_readmem,eprom_sound_writemem,0,0,
			0,0,
			eprom_sound_interrupt,250
		},
		{
			CPU_M68000,
			7159160,		/* 7.159 Mhz */
			3,
			eprom_extra_readmem,eprom_extra_writemem,0,0,
			eprom_extra_interrupt,1
		},
	},
	60, DEFAULT_REAL_60HZ_VBLANK_DURATION,	/* frames per second, vblank duration */
	10,
	eprom_init_machine,

	/* video hardware */
	42*8, 30*8, { 0*8, 42*8-1, 0*8, 30*8-1 },
	gfxdecodeinfo,
	2048, 2048,
	0,

	VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE | VIDEO_UPDATE_BEFORE_VBLANK,
	0,
	eprom_vh_start,
	eprom_vh_stop,
	eprom_vh_screenrefresh,

	/* sound hardware */
	SOUND_SUPPORTS_STEREO,0,0,0,
	{
		{
			SOUND_YM2151,
			&ym2151_interface
		},
		{
			SOUND_TMS5220,
			&tms5220_interface
		}
	}
};



/*************************************
 *
 *		ROM decoding
 *
 *************************************/

static void eprom_rom_decode (void)
{
	int i;

	/* invert the graphics bits on the playfield and motion objects */
	for (i = 0; i < 0x100000; i++)
		Machine->memory_region[1][i] ^= 0xff;
}



/*************************************
 *
 *		ROM definition(s)
 *
 *************************************/

ROM_START( eprom_rom )
	ROM_REGION(0xa0000)	/* 10*64k for 68000 code */
	ROM_LOAD_EVEN( "136069.50a",   0x00000, 0x10000, 0x08888dec )
	ROM_LOAD_ODD ( "136069.40a",   0x00000, 0x10000, 0x29cb1e97 )
	ROM_LOAD_EVEN( "136069.50b",   0x20000, 0x10000, 0x702241c9 )
	ROM_LOAD_ODD ( "136069.40b",   0x20000, 0x10000, 0xfecbf9e2 )
	ROM_LOAD_EVEN( "136069.50d",   0x40000, 0x10000, 0x0f2f1502 )
	ROM_LOAD_ODD ( "136069.40d",   0x40000, 0x10000, 0xbc6f6ae8 )
	ROM_LOAD_EVEN( "136069.40k",   0x60000, 0x10000, 0x130650f6 )
	ROM_LOAD_ODD ( "136069.50k",   0x60000, 0x10000, 0x1da21ed8 )

	ROM_REGION_DISPOSE(0x104000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "136069.47s",   0x00000, 0x10000, 0x0de9d98d )
	ROM_LOAD( "136069.43s",   0x10000, 0x10000, 0x8eb106ad )
	ROM_LOAD( "136069.38s",   0x20000, 0x10000, 0xbf3d0e18 )
	ROM_LOAD( "136069.32s",   0x30000, 0x10000, 0x48fb2e42 )
	ROM_LOAD( "136069.76s",   0x40000, 0x10000, 0x602d939d )
	ROM_LOAD( "136069.70s",   0x50000, 0x10000, 0xf6c973af )
	ROM_LOAD( "136069.64s",   0x60000, 0x10000, 0x9cd52e30 )
	ROM_LOAD( "136069.57s",   0x70000, 0x10000, 0x4e2c2e7e )
	ROM_LOAD( "136069.47u",   0x80000, 0x10000, 0xe7edcced )
	ROM_LOAD( "136069.43u",   0x90000, 0x10000, 0x9d3e144d )
	ROM_LOAD( "136069.38u",   0xa0000, 0x10000, 0x23f40437 )
	ROM_LOAD( "136069.32u",   0xb0000, 0x10000, 0x2a47ff7b )
	ROM_LOAD( "136069.76u",   0xc0000, 0x10000, 0xb0cead58 )
	ROM_LOAD( "136069.70u",   0xd0000, 0x10000, 0xfbc3934b )
	ROM_LOAD( "136069.64u",   0xe0000, 0x10000, 0x0e07493b )
	ROM_LOAD( "136069.57u",   0xf0000, 0x10000, 0x34f8f0ed )
	ROM_LOAD( "1360691.25d",  0x100000, 0x04000, 0x409d818e )

	ROM_REGION(0x14000)	/* 64k + 16k for 6502 code */
	ROM_LOAD( "136069.7b",    0x10000, 0x4000, 0x86e93695 )
	ROM_CONTINUE(             0x04000, 0xc000 )

	ROM_REGION(0x80000)	/* 8*64k for 68000 code */
	ROM_LOAD_EVEN( "136069.10s",   0x00000, 0x10000, 0xdeff6469 )
	ROM_LOAD_ODD ( "136069.10u",   0x00000, 0x10000, 0x5d7afca2 )
	ROM_LOAD_EVEN( "136069.40k",   0x60000, 0x10000, 0x130650f6 )
	ROM_LOAD_ODD ( "136069.50k",   0x60000, 0x10000, 0x1da21ed8 )
ROM_END



/*************************************
 *
 *		Game driver(s)
 *
 *************************************/

struct GameDriver eprom_driver =
{
	__FILE__,
	0,
	"eprom",
	"Escape from the Planet of the Robot Monsters",
	"1989",
	"Atari Games",
	"Aaron Giles (MAME driver)\nTim Lindquist (hardware information)",
	0,
	&eprom_machine_driver,
	0,

	eprom_rom,
	eprom_rom_decode,
	0,
	0,
	0,	/* sound_prom */

	eprom_ports,

	0, 0, 0,   /* colors, palette, colortable */
	ORIENTATION_DEFAULT,
	atarigen_hiload, atarigen_hisave
};