commando.c

这个是延伸mame的在wince平台下的游戏模拟器的代码

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

Commando memory map (preliminary)

MAIN CPU
0000-bfff ROM
d000-d3ff Video RAM
d400-d7ff Color RAM
d800-dbff background video RAM
dc00-dfff background color RAM
e000-ffff RAM
fe00-ff7f Sprites

read:
c000      IN0
c001      IN1
c002      IN2
c003      DSW1
c004      DSW2

write:
c808-c809 background scroll y position
c80a-c80b background scroll x position

SOUND CPU
0000-3fff ROM
4000-47ff RAM

write:
8000      YM2203 #1 control
8001      YM2203 #1 write
8002      YM2203 #2 control
8003      YM2203 #2 write

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

#include "driver.h"
#include "vidhrdw/generic.h"



extern unsigned char *commando_bgvideoram,*commando_bgcolorram;
extern int commando_bgvideoram_size;
extern unsigned char *commando_scrollx,*commando_scrolly;
void commando_bgvideoram_w(int offset,int data);
void commando_bgcolorram_w(int offset,int data);
void commando_spriteram_w(int offset,int data);
void commando_c804_w(int offset,int data);
int commando_vh_start(void);
void commando_vh_stop(void);
void commando_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
void commando_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);



static int commando_interrupt(void)
{
	return 0x00d7;	/* RST 10h - VBLANK */
}



static struct MemoryReadAddress readmem[] =
{
	{ 0x0000, 0xbfff, MRA_ROM },
	{ 0xc000, 0xc000, input_port_0_r },
	{ 0xc001, 0xc001, input_port_1_r },
	{ 0xc002, 0xc002, input_port_2_r },
	{ 0xc003, 0xc003, input_port_3_r },
	{ 0xc004, 0xc004, input_port_4_r },
	{ 0xd000, 0xffff, MRA_RAM },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem[] =
{
	{ 0x0000, 0xbfff, MWA_ROM },
	{ 0xc800, 0xc800, soundlatch_w },
	{ 0xc804, 0xc804, commando_c804_w },
	{ 0xc808, 0xc809, MWA_RAM, &commando_scrolly },
	{ 0xc80a, 0xc80b, MWA_RAM, &commando_scrollx },
	{ 0xd000, 0xd3ff, videoram_w, &videoram, &videoram_size },
	{ 0xd400, 0xd7ff, colorram_w, &colorram },
	{ 0xd800, 0xdbff, commando_bgvideoram_w, &commando_bgvideoram, &commando_bgvideoram_size },
	{ 0xdc00, 0xdfff, commando_bgcolorram_w, &commando_bgcolorram },
	{ 0xe000, 0xfdff, MWA_RAM },
	{ 0xfe00, 0xff7f, commando_spriteram_w, &spriteram, &spriteram_size },
	{ 0xff80, 0xffff, MWA_RAM },
	{ -1 }	/* end of table */
};



static struct MemoryReadAddress sound_readmem[] =
{
	{ 0x0000, 0x3fff, MRA_ROM },
	{ 0x4000, 0x47ff, MRA_RAM },
	{ 0x6000, 0x6000, soundlatch_r },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress sound_writemem[] =
{
	{ 0x0000, 0x3fff, MWA_ROM },
	{ 0x4000, 0x47ff, MWA_RAM },
	{ 0x8000, 0x8000, YM2203_control_port_0_w },
	{ 0x8001, 0x8001, YM2203_write_port_0_w },
	{ 0x8002, 0x8002, YM2203_control_port_1_w },
	{ 0x8003, 0x8003, YM2203_write_port_1_w },
	{ -1 }	/* end of table */
};



INPUT_PORTS_START( input_ports )
	PORT_START	/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START	/* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* DSW0 */
	PORT_DIPNAME( 0x03, 0x03, "Starting Stage", IP_KEY_NONE )
	PORT_DIPSETTING(    0x03, "1" )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPSETTING(    0x00, "7" )
	PORT_DIPNAME( 0x0c, 0x0c, "Lives", IP_KEY_NONE )
	PORT_DIPSETTING(    0x04, "2" )
	PORT_DIPSETTING(    0x0c, "3" )
	PORT_DIPSETTING(    0x08, "4" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x30, 0x30, "Coin A", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "4 Coins/1 Credit" )
	PORT_DIPSETTING(    0x20, "3 Coins/1 Credit" )
	PORT_DIPSETTING(    0x10, "2 Coins/1 Credit" )
	PORT_DIPSETTING(    0x30, "1 Coin/1 Credit" )
	PORT_DIPNAME( 0xc0, 0xc0, "Coin B", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "2 Coins/1 Credit" )
	PORT_DIPSETTING(    0xc0, "1 Coin/1 Credit" )
	PORT_DIPSETTING(    0x40, "1 Coin/2 Credits" )
	PORT_DIPSETTING(    0x80, "1 Coin/3 Credits" )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x07, 0x07, "Bonus Life", IP_KEY_NONE )
	PORT_DIPSETTING(    0x04, "40000 50000" )
	PORT_DIPSETTING(    0x07, "10000 500000" )
	PORT_DIPSETTING(    0x03, "10000 600000" )
	PORT_DIPSETTING(    0x05, "20000 600000" )
	PORT_DIPSETTING(    0x01, "20000 700000" )
	PORT_DIPSETTING(    0x06, "30000 700000" )
	PORT_DIPSETTING(    0x02, "30000 800000" )
	PORT_DIPSETTING(    0x00, "None" )
	PORT_DIPNAME( 0x08, 0x08, "Demo Sounds", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Off" )
	PORT_DIPSETTING(    0x08, "On" )
	PORT_DIPNAME( 0x10, 0x10, "Difficulty", IP_KEY_NONE )
	PORT_DIPSETTING(    0x10, "Normal" )
	PORT_DIPSETTING(    0x00, "Difficult" )
	PORT_DIPNAME( 0x20, 0x00, "Flip Screen", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Off" )
	PORT_DIPSETTING(    0x20, "On" )
	PORT_DIPNAME( 0xc0, 0x00, "Cabinet", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Upright One Player" )
	PORT_DIPSETTING(    0x40, "Upright Two Players" )
/*	PORT_DIPSETTING(    0x80, "Cocktail" ) */
	PORT_DIPSETTING(    0xc0, "Cocktail" )
INPUT_PORTS_END



static struct GfxLayout charlayout =
{
	8,8,	/* 8*8 characters */
	1024,	/* 1024 characters */
	2,	/* 2 bits per pixel */
	{ 4, 0 },
	{ 0, 1, 2, 3, 8+0, 8+1, 8+2, 8+3 },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
	16*8	/* every char takes 16 consecutive bytes */
};
static struct GfxLayout tilelayout =
{
	16,16,	/* 16*16 tiles */
	1024,	/* 1024 tiles */
	3,	/* 3 bits per pixel */
	{ 0, 1024*32*8, 2*1024*32*8 },	/* the bitplanes are separated */
	{ 0, 1, 2, 3, 4, 5, 6, 7,
			16*8+0, 16*8+1, 16*8+2, 16*8+3, 16*8+4, 16*8+5, 16*8+6, 16*8+7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
			8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	32*8	/* every tile takes 32 consecutive bytes */
};
static struct GfxLayout spritelayout =
{
	16,16,	/* 16*16 sprites */
	768,	/* 768 sprites */
	4,	/* 4 bits per pixel */
	{ 768*64*8+4, 768*64*8+0, 4, 0 },
	{ 0, 1, 2, 3, 8+0, 8+1, 8+2, 8+3,
			32*8+0, 32*8+1, 32*8+2, 32*8+3, 33*8+0, 33*8+1, 33*8+2, 33*8+3 },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,
			8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16 },
	64*8	/* every sprite takes 64 consecutive bytes */
};



static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ 1, 0x00000, &charlayout,   192, 16 },	/* colors 192-255 */
	{ 1, 0x04000, &tilelayout,     0, 16 },	/* colors   0-127 */
	{ 1, 0x1c000, &spritelayout, 128,  4 },	/* colors 128-191 */
	{ -1 } /* end of array */
};



static struct YM2203interface ym2203_interface =
{
	2,			/* 2 chips */
	1500000,	/* 1.5 MHz */
	{ YM2203_VOL(15,15), YM2203_VOL(15,15) },
	{ 0 },
	{ 0 },
	{ 0 },
	{ 0 }
};



static struct MachineDriver machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			4000000,	/* 4 Mhz (?) */
			0,
			readmem,writemem,0,0,
			commando_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			3000000,	/* 3 Mhz */
			3,	/* memory region #3 */