rallyx.c

这个是延伸mame的在wince平台下的游戏模拟器的代码

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

Rally X memory map (preliminary)

0000-3fff ROM
8000-83ff Radar video RAM + other
8400-87ff video RAM
8800-8bff Radar color RAM + other
8c00-8fff color RAM
9800-9fff RAM

memory mapped ports:

read:
a000      IN0
a080      IN1
a100      DSW1

*
 * IN0 (all bits are inverted)
 * bit 7 : ?
 * bit 6 : START 1
 * bit 5 : UP player 1
 * bit 4 : DOWN player 1
 * bit 3 : RIGHT player 1
 * bit 2 : LEFT player 1
 * bit 1 : SMOKE player 1
 * bit 0 : CREDIT
 *
*
 * IN1 (all bits are inverted)
 * bit 7 : ?
 * bit 6 : START 2
 * bit 5 : UP player 2 (TABLE only)
 * bit 4 : DOWN player 2 (TABLE only)
 * bit 3 : RIGHT player 2 (TABLE only)
 * bit 2 : LEFT player 2 (TABLE only)
 * bit 1 : SMOKE player 2 (TABLE only)
 * bit 0 : COCKTAIL or UPRIGHT cabinet 1 = UPRIGHT
 *
*
 * DSW1 (all bits are inverted)
 * bit 7 :\ 00 = free play      01 = 2 coins 1 play
 * bit 6 :/ 10 = 1 coin 2 play  11 = 1 coin 1 play
 * bit 5 :\ xxx = cars,rank:
 * bit 4 :| 000 = 2,A  001 = 3,A  010 = 1,B  011 = 2,B
 * bit 3 :/ 100 = 3,B  101 = 1,C  110 = 2,C  111 = 3,C
 * bit 2 :  0 = bonus at 10(1 car)/15(2 cars)/20(3 cars)  1 = bonus at 30/40/60
 * bit 1 :  1 = bonus at xxx points  0 = no bonus
 * bit 0 :  TEST
 *

write:
8014-801f sprites - 6 pairs: code (including flipping) and X position
8814-881f sprites - 6 pairs: Y position and color
8034-880c radar car indicators x position
8834-883c radar car indicators y position
a004-a00c radar car indicators color and x position MSB
a080      watchdog reset?
a105      sound voice 1 waveform (nibble)
a111-a113 sound voice 1 frequency (nibble)
a115      sound voice 1 volume (nibble)
a10a      sound voice 2 waveform (nibble)
a116-a118 sound voice 2 frequency (nibble)
a11a      sound voice 2 volume (nibble)
a10f      sound voice 3 waveform (nibble)
a11b-a11d sound voice 3 frequency (nibble)
a11f      sound voice 3 volume (nibble)
a130      virtual screen X scroll position
a140      virtual screen Y scroll position
a170      ? this is written to A LOT of times every frame
a180      explosion sound trigger
a181      interrupt enable
a182      ?
a183      flip screen
a184      1 player start lamp
a185      2 players start lamp
a186      ?

I/O ports:
OUT on port $0 sets the interrupt vector/instruction (the game uses both
IM 2 and IM 0)

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

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



void pengo_sound_w(int offset,int data);
extern unsigned char *pengo_soundregs;

extern unsigned char *rallyx_videoram2,*rallyx_colorram2;
extern unsigned char *rallyx_radarcarx,*rallyx_radarcary,*rallyx_radarcarcolor;
extern int rallyx_radarram_size;
extern unsigned char *rallyx_scrollx,*rallyx_scrolly;
void rallyx_videoram2_w(int offset,int data);
void rallyx_colorram2_w(int offset,int data);
void rallyx_flipscreen_w(int offset,int data);
void rallyx_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
int rallyx_vh_start(void);
void rallyx_vh_stop(void);
void rallyx_init(void);
void rallyx_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);


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


	if (data == 0 && last != 0)
		sample_start(0,0,0);

	last = data;
}

static struct MemoryReadAddress readmem[] =
{
	{ 0x0000, 0x3fff, MRA_ROM },
	{ 0x8000, 0x8fff, MRA_RAM },
	{ 0x9800, 0x9fff, MRA_RAM },
	{ 0xa000, 0xa000, input_port_0_r },	/* IN0 */
	{ 0xa080, 0xa080, input_port_1_r },	/* IN1 */
	{ 0xa100, 0xa100, input_port_2_r },	/* DSW1 */
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem[] =
{
	{ 0x0000, 0x3fff, MWA_ROM },
	{ 0x8000, 0x83ff, videoram_w, &videoram, &videoram_size },
	{ 0x8400, 0x87ff, rallyx_videoram2_w, &rallyx_videoram2 },
	{ 0x8800, 0x8bff, colorram_w, &colorram },
	{ 0x8c00, 0x8fff, rallyx_colorram2_w, &rallyx_colorram2 },
	{ 0x9800, 0x9fff, MWA_RAM },
	{ 0xa004, 0xa00f, MWA_RAM, &rallyx_radarcarcolor },
	{ 0xa080, 0xa080, watchdog_reset_w },
	{ 0xa100, 0xa11f, pengo_sound_w, &pengo_soundregs },
	{ 0xa130, 0xa130, MWA_RAM, &rallyx_scrollx },
	{ 0xa140, 0xa140, MWA_RAM, &rallyx_scrolly },
	{ 0xa170, 0xa170, MWA_NOP },	/* ????? */
	{ 0xa180, 0xa180, rallyx_play_sound_w },
	{ 0xa181, 0xa181, interrupt_enable_w },
	{ 0xa183, 0xa183, rallyx_flipscreen_w },
	{ 0xa184, 0xa185, osd_led_w },
	{ 0xa186, 0xa186, MWA_NOP },
	{ 0x8014, 0x801f, MWA_RAM, &spriteram, &spriteram_size },	/* these are here just to initialize */
	{ 0x8814, 0x881f, MWA_RAM, &spriteram_2 },	/* the pointers. */
	{ 0x8034, 0x803f, MWA_RAM, &rallyx_radarcarx, &rallyx_radarram_size },	/* ditto */
	{ 0x8834, 0x883f, MWA_RAM, &rallyx_radarcary },
	{ -1 }	/* end of table */
};

static struct IOWritePort writeport[] =
{
	{ 0, 0, interrupt_vector_w },
	{ -1 }	/* end of table */
};



INPUT_PORTS_START( rallyx_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT |IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START      /* IN1 */
	PORT_DIPNAME( 0x01, 0x01, "Cabinet", IP_KEY_NONE )
	PORT_DIPSETTING(    0x01, "Upright" )
	PORT_DIPSETTING(    0x00, "Cocktail" )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START      /* DSW0 */
	PORT_BITX(    0x01, 0x01, IPT_DIPSWITCH_NAME | IPF_TOGGLE, "Service Mode", OSD_KEY_F2, IP_JOY_NONE, 0 )
	PORT_DIPSETTING(    0x01, "Off" )
	PORT_DIPSETTING(    0x00, "On" )
	/* the bonus score depends on the number of lives */
	PORT_DIPNAME( 0x02, 0x02, "Bonus Life Score", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Low" )
	PORT_DIPSETTING(    0x02, "High" )
	PORT_DIPNAME( 0x04, 0x04, "Bonus Life", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Not Awarded" )
	PORT_DIPSETTING(    0x04, "Awarded" )
	PORT_DIPNAME( 0x38, 0x08, "Difficulty", IP_KEY_NONE )
	PORT_DIPSETTING(    0x10, "1 Car, Medium" )
	PORT_DIPSETTING(    0x28, "1 Car, Hard" )
	PORT_DIPSETTING(    0x00, "2 Cars, Easy" )
	PORT_DIPSETTING(    0x18, "2 Cars, Medium" )
	PORT_DIPSETTING(    0x30, "2 Cars, Hard" )
	PORT_DIPSETTING(    0x08, "3 Cars, Easy" )
	PORT_DIPSETTING(    0x20, "3 Cars, Medium" )
	PORT_DIPSETTING(    0x38, "3 Cars, Hard" )
	PORT_DIPNAME( 0xc0, 0xc0, "Coinage", IP_KEY_NONE )
	PORT_DIPSETTING(    0x40, "2 Coins/1 Credit" )
	PORT_DIPSETTING(    0xc0, "1 Coin/1 Credit" )
	PORT_DIPSETTING(    0x80, "1 Coin/2 Credits" )
	PORT_DIPSETTING(    0x00, "Free Play" )
INPUT_PORTS_END

INPUT_PORTS_START( nrallyx_input_ports )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT |IPF_4WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START      /* IN1 */
	PORT_DIPNAME( 0x01, 0x01, "Cabinet", IP_KEY_NONE )
	PORT_DIPSETTING(    0x01, "Upright" )
	PORT_DIPSETTING(    0x00, "Cocktail" )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START      /* DSW0 */
	PORT_BITX(    0x01, 0x01, IPT_DIPSWITCH_NAME | IPF_TOGGLE, "Service Mode", OSD_KEY_F2, IP_JOY_NONE, 0 )
	PORT_DIPSETTING(    0x01, "Off" )
	PORT_DIPSETTING(    0x00, "On" )
	/* the bonus score depends on the number of lives */
	PORT_DIPNAME( 0x02, 0x02, "Bonus Life Score", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Low" )
	PORT_DIPSETTING(    0x02, "High" )
	PORT_DIPNAME( 0x04, 0x04, "Bonus Life", IP_KEY_NONE )
	PORT_DIPSETTING(    0x00, "Not Awarded" )
	PORT_DIPSETTING(    0x04, "Awarded" )
	PORT_DIPNAME( 0x38, 0x00, "Difficulty", IP_KEY_NONE )
	PORT_DIPSETTING(    0x10, "1 Car, Medium" )
	PORT_DIPSETTING(    0x28, "1 Car, Hard" )
	PORT_DIPSETTING(    0x18, "2 Cars, Medium" )
	PORT_DIPSETTING(    0x30, "2 Cars, Hard" )
	PORT_DIPSETTING(    0x00, "3 Cars, Easy" )
	PORT_DIPSETTING(    0x20, "3 Cars, Medium" )
	PORT_DIPSETTING(    0x38, "3 Cars, Hard" )
	PORT_DIPSETTING(    0x08, "4 Cars, Easy" )
	PORT_DIPNAME( 0xc0, 0xc0, "Coinage", IP_KEY_NONE )