📄 mikie.c

📁 这个是延伸mame的在wince平台下的游戏模拟器的代码
💻 C
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/***************************************************************************

Mikie memory map (preliminary)

MAIN BOARD:
2800-288f Sprite RAM (288f, not 287f - quite unusual)
3800-3bff Color RAM
3c00-3fff Video RAM
4000-5fff ROM (?)
5ff0	  Watchdog (?)
6000-ffff ROM


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

#include "driver.h"
#include "vidhrdw/generic.h"
#include "M6809/M6809.h"



void mikie_palettebank_w(int offset,int data);
void mikie_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
void mikie_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);



void mikie_init_machine(void)
{
        /* Set optimization flags for M6809 */
        m6809_Flags = M6809_FAST_S | M6809_FAST_U;
}

int mikie_sh_timer_r(int offset)
{
	int clock;

#define TIMER_RATE 512

	clock = cpu_gettotalcycles() / TIMER_RATE;

	return clock;
}

void mikie_sh_irqtrigger_w(int offset,int data)
{
	static int last;


	if (last == 0 && data == 1)
	{
		/* setting bit 0 low then high triggers IRQ on the sound CPU */
		cpu_cause_interrupt(1,0xff);
	}

	last = data;
}



static struct MemoryReadAddress readmem[] =
{
	{ 0x0000, 0x00ff, MRA_RAM },	/* ???? */
	{ 0x2400, 0x2400, input_port_0_r },	/* coins + selftest */
	{ 0x2401, 0x2401, input_port_1_r },	/* player 1 controls */
	{ 0x2402, 0x2402, input_port_2_r },	/* player 2 controls */
	{ 0x2403, 0x2403, input_port_3_r },	/* flip */
	{ 0x2500, 0x2500, input_port_4_r },	/* Dipswitch settings */
	{ 0x2501, 0x2501, input_port_5_r },	/* Dipswitch settings */
	{ 0x2800, 0x2fff, MRA_RAM },	/* RAM BANK 2 */
	{ 0x3000, 0x37ff, MRA_RAM },	/* RAM BANK 3 */
	{ 0x3800, 0x3fff, MRA_RAM },	/* video RAM */
	{ 0x4000, 0x5fff, MRA_ROM },    /* Machine checks for extra rom */
	{ 0x6000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress writemem[] =
{
	{ 0x2002, 0x2002, mikie_sh_irqtrigger_w },
	{ 0x2007, 0x2007, interrupt_enable_w },
	{ 0x2100, 0x2100, MWA_NOP },		/* Watchdog */
	{ 0x2200, 0x2200, mikie_palettebank_w },
	{ 0x2400, 0x2400, soundlatch_w },
	{ 0x2800, 0x288f, MWA_RAM, &spriteram, &spriteram_size },
	{ 0x2890, 0x37ff, MWA_RAM },
	{ 0x3800, 0x3bff, colorram_w, &colorram },
	{ 0x3c00, 0x3fff, videoram_w, &videoram, &videoram_size },
	{ 0x6000, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryReadAddress sound_readmem[] =
{
	{ 0x0000, 0x3fff, MRA_ROM },
	{ 0x4000, 0x43ff, MRA_RAM },
	{ 0x8003, 0x8003, soundlatch_r },
	{ 0x8005, 0x8005, mikie_sh_timer_r },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress sound_writemem[] =
{
	{ 0x0000, 0x3fff, MWA_ROM },
	{ 0x4000, 0x43ff, MWA_RAM },
	{ 0x8000, 0x8000, MWA_NOP },	/* sound command latch */
	{ 0x8001, 0x8001, MWA_NOP },	/* ??? */
	{ 0x8002, 0x8002, SN76496_0_w },	/* trigger read of latch */
	{ 0x8004, 0x8004, SN76496_1_w },	/* trigger read of latch */
	{ 0x8079, 0x8079, MWA_NOP },	/* ??? */
	{ -1 }
};



INPUT_PORTS_START( input_ports )
	PORT_START	/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START	/* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START	/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | 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_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START
	PORT_DIPNAME( 0x01, 0x00, "Flip Screen", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Off" )
	PORT_DIPSETTING(    0x01, "On" )
	PORT_DIPNAME( 0x02, 0x00, "Controls", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Single" )
	PORT_DIPSETTING(    0x02, "Dual" )
	PORT_BIT( 0xfc, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* DSW0 */
	PORT_DIPNAME( 0x0f, 0x0f, "Coin A", IP_KEY_NONE )
	PORT_DIPSETTING(    0x02, "4 Coins/1 Credit" )
	PORT_DIPSETTING(    0x05, "3 Coins/1 Credit" )
	PORT_DIPSETTING(    0x08, "2 Coins/1 Credit" )
	PORT_DIPSETTING(    0x04, "3 Coins/2 Credits" )
	PORT_DIPSETTING(    0x01, "4 Coins/3 Credits" )
	PORT_DIPSETTING(    0x0f, "1 Coin/1 Credit" )
	PORT_DIPSETTING(    0x03, "3 Coins/4 Credits" )
	PORT_DIPSETTING(    0x07, "2 Coins/3 Credits" )
	PORT_DIPSETTING(    0x0e, "1 Coin/2 Credits" )
	PORT_DIPSETTING(    0x06, "2 Coins/5 Credits" )
	PORT_DIPSETTING(    0x0d, "1 Coin/3 Credits" )
	PORT_DIPSETTING(    0x0c, "1 Coin/4 Credits" )
	PORT_DIPSETTING(    0x0b, "1 Coin/5 Credits" )
	PORT_DIPSETTING(    0x0a, "1 Coin/6 Credits" )
	PORT_DIPSETTING(    0x09, "1 Coin/7 Credits" )
	PORT_DIPSETTING(    0x00, "Free Play" )
	PORT_DIPNAME( 0xf0, 0xf0, "Coin B", IP_KEY_NONE )
	PORT_DIPSETTING(    0x20, "4 Coins/1 Credit" )
	PORT_DIPSETTING(    0x50, "3 Coins/1 Credit" )
	PORT_DIPSETTING(    0x80, "2 Coins/1 Credit" )
	PORT_DIPSETTING(    0x40, "3 Coins/2 Credits" )
	PORT_DIPSETTING(    0x10, "4 Coins/3 Credits" )
	PORT_DIPSETTING(    0xf0, "1 Coin/1 Credit" )
	PORT_DIPSETTING(    0x30, "3 Coins/4 Credits" )
	PORT_DIPSETTING(    0x70, "2 Coins/3 Credits" )
	PORT_DIPSETTING(    0xe0, "1 Coin/2 Credits" )
	PORT_DIPSETTING(    0x60, "2 Coins/5 Credits" )
	PORT_DIPSETTING(    0xd0, "1 Coin/3 Credits" )
	PORT_DIPSETTING(    0xc0, "1 Coin/4 Credits" )
	PORT_DIPSETTING(    0xb0, "1 Coin/5 Credits" )
	PORT_DIPSETTING(    0xa0, "1 Coin/6 Credits" )
	PORT_DIPSETTING(    0x90, "1 Coin/7 Credits" )
	PORT_DIPSETTING(    0x00, "Disabled" )

	PORT_START	/* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, "Lives", IP_KEY_NONE )
	PORT_DIPSETTING(    0x03, "3" )
	PORT_DIPSETTING(    0x02, "4" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_DIPSETTING(    0x00, "7" )
	PORT_DIPNAME( 0x04, 0x00, "Cabinet", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Upright" )
	PORT_DIPSETTING(    0x04, "Cocktail" )
	PORT_DIPNAME( 0x18, 0x18, "Bonus Life", IP_KEY_NONE )
	PORT_DIPSETTING(    0x18, "20000 50000" )
	PORT_DIPSETTING(    0x10, "30000 60000" )
	PORT_DIPSETTING(    0x08, "30000" )
	PORT_DIPSETTING(    0x00, "40000" )
	PORT_DIPNAME( 0x60, 0x60, "Difficulty", IP_KEY_NONE )
	PORT_DIPSETTING(    0x60, "Easy" )
	PORT_DIPSETTING(    0x40, "Medium" )
	PORT_DIPSETTING(    0x20, "Hard" )
	PORT_DIPSETTING(    0x00, "Hardest" )
	PORT_DIPNAME( 0x80, 0x00, "Demo Sounds", IP_KEY_NONE )
	PORT_DIPSETTING(    0x80, "Off" )
	PORT_DIPSETTING(    0x00, "On" )
INPUT_PORTS_END



static struct GfxLayout charlayout =
{
	8,8,    /* 8*8 characters */
	512,    /* 512 characters */
	4,      /* 4 bits per pixel */
	{ 0, 1, 2, 3 }, /* the bitplanes are packed */
	{ 7*4*8, 6*4*8, 5*4*8, 4*4*8, 3*4*8, 2*4*8, 1*4*8, 0*4*8 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 },
	8*4*8     /* every char takes 32 consecutive bytes */
};

static struct GfxLayout spritelayout =
{
	16,16,	     /* 16*16 sprites */
	256,	        /* 256 sprites */
	4,	           /* 4 bits per pixel */
	{ 0, 4, 256*128*8+0, 256*128*8+4 },
	{ 39*16, 38*16, 37*16, 36*16, 35*16, 34*16, 33*16, 32*16,
			7*16, 6*16, 5*16, 4*16, 3*16, 2*16, 1*16, 0*16 },
	{ 32*8+0, 32*8+1, 32*8+2, 32*8+3, 16*8+0, 16*8+1, 16*8+2, 16*8+3,
			0, 1, 2, 3, 48*8+0, 48*8+1, 48*8+2, 48*8+3 },
	128*8	/* every sprite takes 64 bytes */
};


static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ 1, 0x0000, &charlayout,         0, 16*8 },
	{ 1, 0x4000, &spritelayout, 16*8*16, 16*8 },
	{ 1, 0x4001, &spritelayout, 16*8*16, 16*8 },
	{ -1 } /* end of array */
};



static struct SN76496interface sn76496_interface =
{
	2,	/* 2 chips */
	1789750,	/* 1.78975 Mhz ??? */
	{ 100, 100 }
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