dec0.c

这个是延伸mame的在wince平台下的游戏模拟器的代码

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

  Data East 16 bit games - Bryan McPhail, [e-mail]

  This file contains drivers for:

    * Heavy Barrel                            (USA set)
    * Heavy Barrel                            (Japanese set)
	* Bad Dudes vs Dragonninja                (USA set)
    * Dragonninja                             (Japanese version of above)
    * Robocop                                 (Japanese pirate rom set)
    * Hippodrome                              (USA set)
    * Fighting Fantasy                        (Japanese version of above)
    * Sly Spy                                 (USA set)
	* Midnight Resistance                     (USA set)
    * Midnight Resistance                     (Japanese set)

To do:
Add Robocop (Japanese original & 2nd bootleg set), Secret Agent (Sly Spy bootleg).
Birdie Try runs on this hardware, roms are needed.

Sprite/background priority in boat stage of Sly Spy & forest level of Bad
Dudes, current drivers MAY be correct (Sly Spy is certainly wrong), we
need real boards to check against.

Figure out weapon placement in Heavy Barrel.


Notes:
	Missing scroll field in Hippodrome
	Hippodrome can crash if you fight 'Serpent' enemy

	Weapon placement in Heavy Barrel is still wrong.

	No sound in Sly Spy or MidRes, they use a custom Deco processor.  It is a
surface mounted 80-pin chip and appears to be HU6820 compatible.
This chip is used for the backgrounds in Hippodrome, the main cpu in Bloody
Wolf/Battle Ranger, and for sound in Caveman Ninja, Captain America, Dark Seal etc.


  Thanks to Gouky & Richard Bush for information along the way, especially
  Gouky's patch for Bad Dudes & YM3812 information!
	Thanks to JC Alexander for fix to Robocop ending!

Cheats:

Hippodrome: Level number held in 0xFF8011

Bad Dudes: level number held in FF821D
Put a bpx at 0x1b94 to halt at level check and choose level or end-seq
Sly Spy: bpx at 5d8 for level check, can go to any level.
(see comments in patch section below).

Mid res: bpx at c02 for level check, can go straight to credits.
         Level number held in 100006 (word)
         bpx 10a6 - so you can choose level at start of game.
         Put PC to 0xa1e in game to trigger continue screen


SEE 0xdede in slyspy - scroll register from start of level 3

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

#include "driver.h"
#include "vidhrdw/generic.h"
#include "M6502/m6502.h"

/* Video emulation definitions */
int  dec0_vh_start(void);
void dec0_vh_stop(void);
void dec0_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
void midres_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
void slyspy_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
void hippodrm_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
void hbarrel_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
void robocop_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);

extern unsigned char *dec0_pf1_rowscroll,*dec0_pf2_rowscroll,*dec0_pf3_rowscroll;
extern unsigned char *dec0_pf1_colscroll,*dec0_pf2_colscroll,*dec0_pf3_colscroll;
extern unsigned char *dec0_pf1_data,*dec0_pf2_data,*dec0_pf3_data;

void dec0_pf1_control_0_w(int offset,int data);
void dec0_pf1_control_1_w(int offset,int data);
void dec0_pf1_rowscroll_w(int offset,int data);
void dec0_pf1_colscroll_w(int offset,int data);
void dec0_pf1_data_w(int offset,int data);
int dec0_pf1_data_r(int offset);
void dec0_pf2_control_0_w(int offset,int data);
void dec0_pf2_control_1_w(int offset,int data);
void dec0_pf2_rowscroll_w(int offset,int data);
void dec0_pf2_colscroll_w(int offset,int data);
void dec0_pf2_data_w(int offset,int data);
int dec0_pf2_data_r(int offset);
void dec0_pf3_control_0_w(int offset,int data);
void dec0_pf3_control_1_w(int offset,int data);
void dec0_pf3_rowscroll_w(int offset,int data);
void dec0_pf3_colscroll_w(int offset,int data);
int dec0_pf3_colscroll_r(int offset);
void dec0_pf3_data_w(int offset,int data);
int dec0_pf3_data_r(int offset);
void dec0_priority_w(int offset,int data);

void dec0_paletteram_w_rg(int offset,int data);
void dec0_paletteram_w_b(int offset,int data);

/* System prototypes - from machine/dec0.c */
extern void dec0_custom_memory(void);
extern int dec0_controls_read(int offset);
extern int dec0_rotary_read(int offset);
extern int midres_controls_read(int offset);
extern int slyspy_controls_read(int offset);

extern void dec0_i8751_write(int data);
extern void dec0_i8751_reset(void);

#if 0
extern int hippo_6510_intf_r(int offset);
extern void hippo_6510_intf_w(int offset,int data);
#endif

unsigned char *dec0_ram;

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

static void dec0_control_w(int offset,int data)
{
	switch (offset)
	{
		case 0: /* Playfield & Sprite priority */
			dec0_priority_w(0,data);
			break;

		case 2: /* An ack or DMA flag */
			break;

		case 4: /* 6502 sound cpu */
			soundlatch_w(0,data & 0xff);
			cpu_cause_interrupt(1,M6502_INT_NMI);
			break;

		case 6: /* Intel 8751 microcontroller - Bad Dudes & Heavy Barrel only */
			dec0_i8751_write(data);
			break;

		case 8: /* Interrupt ack (VBL - IRQ 6) (or could be DMA flag to graphics chips */
			break;

		case 0xa: /* ? */
			break;

		case 0xe: /* Reset Intel 8751? - not sure, all the games write here at startup */
			dec0_i8751_reset();
			break;

		default:
			break;
	}
}

static void slyspy_control_w(int offset, int data)
{
	int sound=data&0xff;

    switch (offset) {
    	case 0:
			if (sound>0x2d) ADPCM_trigger(0,sound);
			break;
		case 2:
			/* This is set to 0x80 in the boat level, so could be sprite/playfield
				priority - it fits for all cases except boat level where this is
                also 0x80 :( */
			dec0_priority_w(0,data);
			break;
    }
}

static void midres_sound_w(int offset, int data)
{
    int sound=data&0xff;

    if (sound>0x44)
		ADPCM_trigger(0,sound);
}

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

static struct MemoryReadAddress dec0_readmem[] =
{
	{ 0x000000, 0x05ffff, MRA_ROM },
	{ 0x244000, 0x245fff, dec0_pf1_data_r },
	{ 0x24a000, 0x24a7ff, dec0_pf2_data_r },
	{ 0x24c800, 0x24c87f, dec0_pf3_colscroll_r },
	{ 0x24d000, 0x24d7ff, dec0_pf3_data_r },
	{ 0x300000, 0x30001f, dec0_rotary_read },
	{ 0x30c000, 0x30c00b, dec0_controls_read },
	{ 0xff8000, 0xffbfff, MRA_BANK1 }, /* Main ram */
	{ 0xffc000, 0xffc7ff, MRA_BANK2 }, /* Sprites */
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress dec0_writemem[] =
{
	{ 0x000000, 0x05ffff, MWA_ROM },

	{ 0x240000, 0x240007, dec0_pf1_control_0_w },	/* text layer */
	{ 0x240010, 0x240017, dec0_pf1_control_1_w },
 	{ 0x242000, 0x24207f, dec0_pf1_colscroll_w, &dec0_pf1_colscroll },
	{ 0x242400, 0x2427ff, dec0_pf1_rowscroll_w, &dec0_pf1_rowscroll },
	{ 0x244000, 0x245fff, dec0_pf1_data_w, &dec0_pf1_data },

	{ 0x246000, 0x246007, dec0_pf2_control_0_w },	/* first tile layer */
	{ 0x246010, 0x246017, dec0_pf2_control_1_w },
	{ 0x248000, 0x24807f, dec0_pf2_colscroll_w, &dec0_pf2_colscroll },
	{ 0x248400, 0x2487ff, dec0_pf2_rowscroll_w, &dec0_pf2_rowscroll },
	{ 0x24a000, 0x24a7ff, dec0_pf2_data_w, &dec0_pf2_data },

	{ 0x24c000, 0x24c007, dec0_pf3_control_0_w },	/* second tile layer */
	{ 0x24c010, 0x24c017, dec0_pf3_control_1_w },
	{ 0x24c800, 0x24c87f, dec0_pf3_colscroll_w, &dec0_pf3_colscroll },
	{ 0x24cc00, 0x24cfff, dec0_pf3_rowscroll_w, &dec0_pf3_rowscroll },
	{ 0x24d000, 0x24d7ff, dec0_pf3_data_w, &dec0_pf3_data },

	{ 0x30c010, 0x30c01f, dec0_control_w },	/* Priority, sound, etc. */
	{ 0x310000, 0x3107ff, dec0_paletteram_w_rg, &paletteram },	/* Red & Green bits */
	{ 0x314000, 0x3147ff, dec0_paletteram_w_b, &paletteram_2 },	/* Blue bits */
	{ 0xff8000, 0xffbfff, MWA_BANK1, &dec0_ram },
	{ 0xffc000, 0xffc7ff, MWA_BANK2, &spriteram },
	{ -1 }  /* end of table */
};

static struct MemoryReadAddress slyspy_readmem[] =
{
	{ 0x000000, 0x03ffff, MRA_ROM },
	{ 0x244000, 0x244003, MRA_NOP }, /* ?? watchdog ?? */
	{ 0x304000, 0x307fff, MRA_BANK1 }, /* Sly spy main ram */
	{ 0x308000, 0x3087ff, MRA_BANK2 }, /* Sprites */
	{ 0x314008, 0x31400f, slyspy_controls_read },
	{ 0x31c00c, 0x31c00f, MRA_NOP },	/* sound CPU read? */
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress slyspy_writemem[] =
{
	{ 0x000000, 0x03ffff, MWA_ROM },
	/* All 0x23xxxx are moved from 0x24xxxx via patches to avoid conflicts */
	{ 0x230000, 0x230007, dec0_pf2_control_0_w },
	{ 0x230010, 0x230017, dec0_pf2_control_1_w },
	{ 0x232000, 0x23207f, dec0_pf2_colscroll_w, &dec0_pf2_colscroll },
	{ 0x232400, 0x2327ff, dec0_pf2_rowscroll_w, &dec0_pf2_rowscroll },
	{ 0x238000, 0x238007, dec0_pf1_control_0_w },
	{ 0x238010, 0x238017, dec0_pf1_control_1_w },
	{ 0x23c000, 0x23c07f, dec0_pf1_colscroll_w, &dec0_pf1_colscroll },
	{ 0x23c400, 0x23c7ff, dec0_pf1_rowscroll_w, &dec0_pf1_rowscroll },
	{ 0x238000, 0x239fff, dec0_pf1_data_w }, /* Used only by end sequence */

	/* PRIORITY WORD - still not found, perhaps mixed in with other playfields */

	{ 0x240000, 0x2407ff, dec0_pf2_data_w, &dec0_pf2_data },
	{ 0x242000, 0x243fff, dec0_pf1_data_w, &dec0_pf1_data },
	{ 0x244000, 0x244003, MWA_NOP }, /* ?? watchdog ?? */
	{ 0x246000, 0x2467ff, dec0_pf2_data_w },
	{ 0x248000, 0x2487ff, dec0_pf2_data_w },
	{ 0x24a000, 0x24a003, MWA_NOP }, /* ?? watchdog ?? */
	{ 0x24c000, 0x24c7ff, dec0_pf2_data_w },
	{ 0x24e000, 0x24ffff, dec0_pf1_data_w },


	{ 0x300000, 0x300007, dec0_pf3_control_0_w },
	{ 0x300010, 0x300017, dec0_pf3_control_1_w },
	{ 0x300800, 0x30087f, dec0_pf3_colscroll_w, &dec0_pf3_colscroll },
	{ 0x301000, 0x3017ff, dec0_pf3_data_w, &dec0_pf3_data },
	{ 0x304000, 0x307fff, MWA_BANK1, &dec0_ram }, /* Sly spy main ram */
	{ 0x308000, 0x3087ff, MWA_BANK2, &spriteram },
	{ 0x310000, 0x3107ff, paletteram_xxxxBBBBGGGGRRRR_word_w, &paletteram },
	{ 0x314000, 0x314003, slyspy_control_w },
	{ -1 }  /* end of table */
};

static struct MemoryReadAddress midres_readmem[] =
{
	{ 0x000000, 0x07ffff, MRA_ROM },
	{ 0x100000, 0x103fff, MRA_BANK1 },
	{ 0x120000, 0x1207ff, MRA_BANK2 },
	{ 0x180000, 0x18000f, midres_controls_read },
	{ 0x320000, 0x321fff, dec0_pf1_data_r },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress midres_writemem[] =
{
	{ 0x000000, 0x07ffff, MWA_ROM },
	{ 0x100000, 0x103fff, MWA_BANK1, &dec0_ram },
	{ 0x120000, 0x1207ff, MWA_BANK2, &spriteram },
	{ 0x140000, 0x1407ff, paletteram_xxxxBBBBGGGGRRRR_word_w, &paletteram },
	{ 0x160000, 0x160001, dec0_priority_w },
	{ 0x180008, 0x18000f, MWA_NOP }, /* ?? watchdog ?? */
	{ 0x1a0000, 0x1a0001, midres_sound_w },

	{ 0x200000, 0x200007, dec0_pf2_control_0_w },
	{ 0x200010, 0x200017, dec0_pf2_control_1_w },
	{ 0x220000, 0x2207ff, dec0_pf2_data_w, &dec0_pf2_data },
	{ 0x220800, 0x220fff, dec0_pf2_data_w },	/* mirror address used in end sequence */
	{ 0x240000, 0x24007f, dec0_pf2_colscroll_w, &dec0_pf2_colscroll },
	{ 0x240400, 0x2407ff, dec0_pf2_rowscroll_w, &dec0_pf2_rowscroll },

	{ 0x280000, 0x280007, dec0_pf3_control_0_w },
	{ 0x280010, 0x280017, dec0_pf3_control_1_w },
	{ 0x2a0000, 0x2a07ff, dec0_pf3_data_w, &dec0_pf3_data },
	{ 0x2c0000, 0x2c007f, dec0_pf3_colscroll_w, &dec0_pf3_colscroll },
	{ 0x2c0400, 0x2c07ff, dec0_pf3_rowscroll_w, &dec0_pf3_rowscroll },

	{ 0x300000, 0x300007, dec0_pf1_control_0_w },
	{ 0x300010, 0x300017, dec0_pf1_control_1_w },
	{ 0x320000, 0x321fff, dec0_pf1_data_w, &dec0_pf1_data },
	{ 0x340000, 0x34007f, dec0_pf1_colscroll_w, &dec0_pf1_colscroll },
	{ 0x340400, 0x3407ff, dec0_pf1_rowscroll_w, &dec0_pf1_rowscroll },
	{ -1 }  /* end of table */
};

#if 0
static struct MemoryReadAddress hippo_sub_readmem[] =
{
	{ 0x0000, 0x01ff, MRA_RAM },
	{ 0x6000, 0x60ff, hippo_6510_intf_r },
	{ 0xc000, 0xdfff, MRA_ROM },
	{ 0xe000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress hippo_sub_writemem[] =
{
	{ 0x0000, 0x01ff, MWA_RAM },
	{ 0x6000, 0x60ff, hippo_6510_intf_w },
	{ 0xe000, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};
#endif

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

static struct MemoryReadAddress dec0_s_readmem[] =
{
	{ 0x0000, 0x05ff, MRA_RAM },
	{ 0x3000, 0x3000, soundlatch_r },
	{ 0x3800, 0x3800, OKIM6295_status_r },
	{ 0x8000, 0xffff, MRA_ROM },
	{ -1 }  /* end of table */
};

static struct MemoryWriteAddress dec0_s_writemem[] =
{
	{ 0x0000, 0x05ff, MWA_RAM },
	{ 0x0800, 0x0800, YM2203_control_port_0_w },
	{ 0x0801, 0x0801, YM2203_write_port_0_w },
	{ 0x1000, 0x1000, YM3812_control_port_0_w },
	{ 0x1001, 0x1001, YM3812_write_port_0_w },
	{ 0x3800, 0x3800, OKIM6295_data_w },
	{ 0x8000, 0xffff, MWA_ROM },
	{ -1 }  /* end of table */
};

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

#define DEC0_PLAYER1_CONTROL \
	PORT_START	/* Player 1 controls */										\
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )				\
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )			\
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )			\