📄 mainevt.c

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

  The Main Event, (c) 1988 Konami
  Devastators, (c) 1988 Konami

Emulation by Bryan McPhail, mish@tendril.force9.net

Notes:
* Devastators not playable...  Protected?  Unimplemented opcodes?
* Sprite priorities not yet fully correct
* No sound
* Graphics rom test fails - It looks like graphics roms can be read through
  the sprite area - with bank switching at 0x3802/3 (little endian).
  Turned on by setting 0x20 in 0x3800.
  Setting 0x08 in 0x3800 is monitor flip.

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

#include "driver.h"
#include "vidhrdw/generic.h"
#include "Z80/Z80.h"
#include "M6809/m6809.h"

void mainevt_vh_screenrefresh (struct osd_bitmap *bitmap,int full_refresh);
int mainevt_vh_start (void);
void mainevt_vh_stop (void);
void mainevt_control_w (int offset, int data);
void mainevt_video_control (int offset, int data);

void mainevt_bg_video_w (int offset, int data);
void mainevt_fg_video_w (int offset, int data);
void mainevt_video_w (int offset, int data);

void mainevt_bg_attr_w (int offset, int data);
void mainevt_fg_attr_w (int offset, int data);
void mainevt_attr_w (int offset, int data);

extern unsigned char *mainevt_bg_attr_ram;
extern unsigned char *mainevt_fg_attr_ram;
extern unsigned char *mainevt_attr_ram;

extern unsigned char *bg_videoram;
extern unsigned char *fg_videoram;

extern unsigned char *bg_scrollx_lo;
extern unsigned char *bg_scrollx_hi;
extern unsigned char *bg_scrolly;
extern unsigned char *fg_scrollx_lo;
extern unsigned char *fg_scrollx_hi;
extern unsigned char *fg_scrolly;

static int mainevt_int_type;

/* Unsure about this....  Main Event always uses IRQ, Devastators NMI */
static void mainevt_int_w(int offset, int data)
{
	/* Main Event works with int's enabled from start but Devastors crashes
  	if you try this...  So this turns them on just after self test */
	switch (data) {
		case 0:
			mainevt_int_type=0;
			break;
		case 2:
			mainevt_int_type=M6809_INT_IRQ;
			break;
		case 3: /* Main Event Test mode sets 3.. */
			mainevt_int_type=M6809_INT_IRQ;
			break;
		case 255:
			mainevt_int_type=M6809_INT_NMI;
			break;
	}
}

static int mainevt_interrupt(void)
{
	return mainevt_int_type;
}

static int zero_ret(int offset)
{
	return 0xff;
}

static struct MemoryReadAddress readmem[] =
{
	{ 0x0000, 0x1bff, MRA_RAM },
	{ 0x1e00, 0x1e00, zero_ret }, /* ? */
	{ 0x1f94, 0x1f94, input_port_0_r }, /* Coins */
	{ 0x1f95, 0x1f95, input_port_1_r }, /* Player 1 */
	{ 0x1f96, 0x1f96, input_port_2_r }, /* Player 2 */
	{ 0x1f97, 0x1f97, input_port_5_r }, /* Dip 1 */
	{ 0x1f98, 0x1f98, input_port_7_r }, /* Dip 3 */
	{ 0x1f99, 0x1f99, input_port_3_r }, /* Player 3 */
	{ 0x1f9a, 0x1f9a, input_port_4_r }, /* Player 4 */
	{ 0x1f9b, 0x1f9b, input_port_6_r }, /* Dip 2 */
	{ 0x2000, 0x3bff, MRA_RAM },
	{ 0x3c00, 0x3fff, MRA_RAM },
	{ 0x4000, 0x5fff, MRA_RAM },
	{ 0x6000, 0x7fff, MRA_BANK1 },
	{ 0x8000, 0xffff, MRA_ROM },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem[] =
{
	{ 0x0000, 0x07ff, mainevt_attr_w, &mainevt_attr_ram },
	{ 0x0800, 0x0fff, mainevt_bg_attr_w, &mainevt_bg_attr_ram },
	{ 0x1000, 0x17ff, mainevt_fg_attr_w, &mainevt_fg_attr_ram },

	{ 0x180c, 0x180c, MWA_RAM, &bg_scrolly },
	{ 0x1a00, 0x1a00, MWA_RAM, &bg_scrollx_lo },
	{ 0x1a01, 0x1a01, MWA_RAM, &bg_scrollx_hi },

	{ 0x1d00, 0x1d00, MWA_NOP },  
	{ 0x1e80, 0x1e80, mainevt_int_w },
	{ 0x1f80, 0x1f90, mainevt_control_w },

	{ 0x2000, 0x27ff, mainevt_video_w, &videoram, &videoram_size },
	{ 0x2800, 0x2fff, mainevt_bg_video_w, &bg_videoram },
	{ 0x3000, 0x37ff, mainevt_fg_video_w, &fg_videoram },

	{ 0x380c, 0x380c, MWA_RAM, &fg_scrolly },
	{ 0x3a00, 0x3a00, MWA_RAM, &fg_scrollx_lo },
	{ 0x3a01, 0x3a01, MWA_RAM, &fg_scrollx_hi },

	{ 0x3c00, 0x3fff, MWA_RAM, &spriteram },
	{ 0x4000, 0x5dff, MWA_RAM },
	{ 0x5e00, 0x5fff, paletteram_xBBBBBGGGGGRRRRR_swap_w, &paletteram },
 	{ 0x6000, 0xffff, MWA_ROM },
	{ -1 }	/* end of table */
};

static struct MemoryReadAddress dv_readmem[] =
{
	{ 0x0000, 0x1bff, MRA_RAM },

	{ 0x1e00, 0x1e00, zero_ret },
	{ 0x1f94, 0x1f94, input_port_0_r }, /* Coins */
	{ 0x1f95, 0x1f95, input_port_1_r }, /* Player 1 */
	{ 0x1f96, 0x1f96, input_port_2_r }, /* Player 2 */
	{ 0x1f97, 0x1f97, input_port_5_r }, /* Dip 1 */
	{ 0x1f98, 0x1f98, input_port_7_r }, /* Dip 3 */
	{ 0x1f9b, 0x1f9b, input_port_6_r }, /* Dip 2 */

	{ 0x1fa6, 0x1fa6, zero_ret },

	{ 0x1e80, 0x1e80, zero_ret },  /* Needs to return 0xff */

	{ 0x2000, 0x3bff, MRA_RAM },
	{ 0x3c00, 0x3fff, MRA_RAM },
	{ 0x4000, 0x5fff, MRA_RAM },
	{ 0x6000, 0x7fff, MRA_BANK1 },
	{ 0x8000, 0xffff, MRA_ROM },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress dv_writemem[] =
{
	{ 0x0000, 0x07ff, mainevt_attr_w, &mainevt_attr_ram },
	{ 0x0800, 0x0fff, mainevt_bg_attr_w, &mainevt_bg_attr_ram },
	{ 0x1000, 0x17ff, mainevt_fg_attr_w, &mainevt_fg_attr_ram },
	{ 0x180c, 0x180c, MWA_RAM, &bg_scrolly },
	{ 0x1a00, 0x1a00, MWA_RAM, &bg_scrollx_lo },
	{ 0x1a01, 0x1a01, MWA_RAM, &bg_scrollx_hi },

	{ 0x1e80, 0x1e80, mainevt_int_w },
	{ 0x1f80, 0x1f90, mainevt_control_w },
	{ 0x1fb2, 0x1fb2, MWA_NOP },

	{ 0x2000, 0x27ff, mainevt_video_w, &videoram, &videoram_size },
	{ 0x2800, 0x2fff, mainevt_bg_video_w, &bg_videoram },
	{ 0x3000, 0x37ff, mainevt_fg_video_w, &fg_videoram },

	{ 0x380c, 0x380c, MWA_RAM, &fg_scrolly },
	{ 0x3a00, 0x3a00, MWA_RAM, &fg_scrollx_lo },
	{ 0x3a01, 0x3a01, MWA_RAM, &fg_scrollx_hi },


	{ 0x3c00, 0x3fff, MWA_RAM, &spriteram },
	{ 0x4000, 0x5dff, MWA_RAM },
	{ 0x5e00, 0x5fff, paletteram_xBBBBBGGGGGRRRRR_swap_w, &paletteram },
	{ 0x6000, 0xffff, MWA_ROM },
	{ -1 }	/* end of table */
};

#if 0
static struct MemoryReadAddress sound_readmem[] =
{
	{ 0x0000, 0x7fff, MRA_ROM },
	{ 0x8000, 0x83ff, MRA_RAM },
	{ 0xa000, 0xa000, soundlatch_r },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress sound_writemem[] =
{
	{ 0x0000, 0x7fff, MWA_ROM },
	{ 0x8000, 0x83ff, MWA_RAM },
	{ -1 }	/* end of table */
};
#endif

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

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_COIN4 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE ) /* Service 1 */
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) /* Service 2 */
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE ) /* Service 3 */
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE ) /* Service 4 */

	PORT_START	/* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 )
	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_LEFT | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_PLAYER3 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER3 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_PLAYER3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_PLAYER3 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER3 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER3 )
	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_LEFT | IPF_8WAY | IPF_PLAYER4 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER4 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_PLAYER4 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_PLAYER4 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER4 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER4 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START
	PORT_DIPNAME( 0x0f, 0x0f, "Coins", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "5 Coins/1 Credit" )
	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_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

 	PORT_START
	PORT_BIT( 0x07, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_DIPNAME( 0x18, 0x18, "Bonus Energy", IP_KEY_NONE )
	PORT_DIPSETTING(    0x18, "90" )
	PORT_DIPSETTING(    0x10, "80" )
	PORT_DIPSETTING(    0x08, "70" )
	PORT_DIPSETTING(    0x00, "60" )
	PORT_DIPNAME( 0x60, 0x60, "Difficulty", IP_KEY_NONE )
	PORT_DIPSETTING(    0x60, "Easy" )
	PORT_DIPSETTING(    0x40, "Normal" )
	PORT_DIPSETTING(    0x20, "Difficult" )
	PORT_DIPSETTING(    0x00, "Very Difficult" )
	PORT_DIPNAME( 0x80, 0x00, "Demo Sound", IP_KEY_NONE )
	PORT_DIPSETTING(    0x80, "Off" )
	PORT_DIPSETTING(    0x00, "On" )

	PORT_START
	PORT_DIPNAME( 0x01, 0x01, "Video Flip", IP_KEY_NONE )
	PORT_DIPSETTING(    0x01, "Off" )
	PORT_DIPSETTING(    0x00, "On" )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BITX(    0x04, 0x04, IPT_DIPSWITCH_NAME | IPF_TOGGLE, "Service Mode", OSD_KEY_F2, IP_JOY_NONE, 0 )
	PORT_DIPSETTING(    0x04, "Off" )
	PORT_DIPSETTING(    0x00, "On" )
	PORT_BIT( 0xF8, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END

INPUT_PORTS_START( dv_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_UNUSED )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE ) /* Service 1 */
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) /* Service 2 */
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE ) /* Service 3 */
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE ) /* Service 4 */

	PORT_START	/* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )
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