📄 ccastles.c
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/***************************************************************************
I'm in no mood to write documentation now, so if you have any questions
about this driver, please address them to Pat Lawrence <pjl@ns.net>. I'll
be happy to help you out any way I can.
Crystal Castles memory map.
Address A A A A A A A A A A A A A A A A R D D D D D D D D Function
1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0 / 7 6 5 4 3 2 1 0
5 4 3 2 1 0 W
-------------------------------------------------------------------------------
0000 X X X X X X X X X X X X X X X X W X X X X X X X X X Coordinate
0001 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 W D D D D D D D D Y Coordinate
0002 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 R/W D D D D Bit Mode
0003-0BFF 0 0 0 0 A A A A A A A A A A A A R/W D D D D D D D D RAM (DRAM)
0C00-7FFF 0 A A A A A A A A A A A A A A A R/W D D D D D D D D Screen RAM
8000-8DFF 1 0 0 0 A A A A A A A A A A A A R/W D D D D D D D D RAM (STATIC)
8E00-8EFF 1 0 0 0 1 1 1 0 A A A A A A A A R/W D D D D D D D D MOB BUF 2
-------------------------------------------------------------------------------
8F00-8FFF 1 0 0 0 1 1 1 1 A A A A A A A A R/W D D D D D D D D MOB BUF 1
0 0 R/W D D D D D D D D MOB Picture
0 1 R/W D D D D D D D D MOB Vertical
1 0 R/W D D D D D D D D MOB Priority
1 1 R/W D D D D D D D D MOB Horizontal
-------------------------------------------------------------------------------
9000-90FF 1 0 0 1 0 0 X X A A A A A A A A R/W D D D D D D D D NOVRAM
9400-9401 1 0 0 1 0 1 0 X X X X X X X 0 A R TRAK-BALL 1
9402-9403 1 0 0 1 0 1 0 X X X X X X X 1 A R TRAK-BALL 2
9500-9501 1 0 0 1 0 1 0 X X X X X X X X A R TRAK-BALL 1 mirror
9600 1 0 0 1 0 1 1 X X X X X X X X X R IN0
R D COIN R
R D COIN L
R D COIN AUX
R D SLAM
R D SELF TEST
R D VBLANK
R D JMP1
R D JMP2
-------------------------------------------------------------------------------
9800-980F 1 0 0 1 1 0 0 X X X X X A A A A R/W D D D D D D D D CI/O 0
9A00-9A0F 1 0 0 1 1 0 1 X X X X X A A A A R/W D D D D D D D D CI/O 1
9A08 D D D Option SW
D SPARE
D SPARE
D SPARE
9C00 1 0 0 1 1 1 0 0 0 X X X X X X X W RECALL
-------------------------------------------------------------------------------
9C80 1 0 0 1 1 1 0 0 1 X X X X X X X W D D D D D D D D H Scr Ctr Load
9D00 1 0 0 1 1 1 0 1 0 X X X X X X X W D D D D D D D D V Scr Ctr Load
9D80 1 0 0 1 1 1 0 1 1 X X X X X X X W Int. Acknowledge
9E00 1 0 0 1 1 1 1 0 0 X X X X X X X W WDOG
1 0 0 1 1 1 1 0 1 X X X X A A A W D OUT0
9E80 0 0 0 W D Trak Ball Light P1
9E81 0 0 1 W D Trak Ball Light P2
9E82 0 1 0 W D Store Low
9E83 0 1 1 W D Store High
9E84 1 0 0 W D Spare
9E85 1 0 1 W D Coin Counter R
9E86 1 1 0 W D Coin Counter L
9E87 1 1 1 W D BANK0-BANK1
1 0 0 1 1 1 1 1 0 X X X X A A A W D OUT1
9F00 0 0 0 W D ^AX
9F01 0 0 1 W D ^AY
9F02 0 1 0 W D ^XINC
9F03 0 1 1 W D ^YINC
9F04 1 0 0 W D PLAYER2 (flip screen)
9F05 1 0 1 W D ^SIRE
9F06 1 1 0 W D BOTHRAM
9F07 1 1 1 W D BUF1/^BUF2 (sprite bank)
9F80-9FBF 1 0 0 1 1 1 1 1 1 X A A A A A A W D D D D D D D D COLORAM
A000-FFFF 1 A A A A A A A A A A A A A A A R D D D D D D D D Program ROM
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
extern unsigned char *screen_addr;
extern unsigned char *screen_inc;
extern unsigned char *screen_inc_enable;
extern unsigned char *sprite_bank;
extern unsigned char *ccastles_scrollx;
extern unsigned char *ccastles_scrolly;
void ccastles_paletteram_w(int offset,int data);
int ccastles_vh_start(void);
void ccastles_vh_stop(void);
void ccastles_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
int ccastles_bitmode_r(int offset);
void ccastles_bitmode_w(int offset, int data);
void ccastles_flipscreen_w(int offset,int data);
static void ccastles_led_w(int offset,int data)
{
osd_led_w(offset,~data);
}
static void ccastles_bankswitch_w(int offset, int data)
{
unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];
if (data) { cpu_setbank(1,&RAM[0x10000]); }
else { cpu_setbank(1,&RAM[0xa000]); }
}
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0x0001, MRA_RAM },
{ 0x0002, 0x0002, ccastles_bitmode_r },
{ 0x0003, 0x90ff, MRA_RAM }, /* All RAM */
{ 0x9400, 0x9400, input_port_2_r }, /* trackball y - player 1 */
{ 0x9402, 0x9402, input_port_2_r }, /* trackball y - player 2 */
{ 0x9500, 0x9500, input_port_2_r }, /* trackball y - player 1 mirror */
{ 0x9401, 0x9401, input_port_3_r }, /* trackball x - player 1 */
{ 0x9403, 0x9403, input_port_3_r }, /* trackball x - player 2 */
{ 0x9501, 0x9501, input_port_3_r }, /* trackball x - player 1 mirror */
{ 0x9600, 0x9600, input_port_0_r }, /* IN0 */
{ 0x9800, 0x980f, pokey1_r }, /* Random # generator on a Pokey */
{ 0x9a00, 0x9a0f, pokey2_r }, /* Random #, IN1 */
{ 0xa000, 0xdfff, MRA_BANK1 },
{ 0xe000, 0xffff, MRA_ROM }, /* ROMs/interrupt vectors */
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0x0001, MWA_RAM, &screen_addr },
{ 0x0002, 0x0002, ccastles_bitmode_w },
{ 0x0003, 0x0bff, MWA_RAM },
{ 0x0c00, 0x7fff, MWA_RAM, &videoram },
{ 0x8000, 0x8dff, MWA_RAM },
{ 0x8e00, 0x8eff, MWA_RAM, &spriteram_2, &spriteram_size },
{ 0x8f00, 0x8fff, MWA_RAM, &spriteram },
{ 0x9000, 0x90ff, MWA_RAM }, /* NVRAM */
{ 0x9800, 0x980f, pokey1_w },
{ 0x9a00, 0x9a0f, pokey2_w },
{ 0x9c80, 0x9c80, MWA_RAM, &ccastles_scrollx },
{ 0x9d00, 0x9d00, MWA_RAM, &ccastles_scrolly },
{ 0x9d80, 0x9d80, MWA_NOP },
{ 0x9e00, 0x9e00, MWA_NOP },
{ 0x9e80, 0x9e81, ccastles_led_w },
{ 0x9e85, 0x9e86, MWA_NOP },
{ 0x9e87, 0x9e87, ccastles_bankswitch_w },
{ 0x9f00, 0x9f01, MWA_RAM, &screen_inc_enable },
{ 0x9f02, 0x9f03, MWA_RAM, &screen_inc },
{ 0x9f04, 0x9f04, ccastles_flipscreen_w },
{ 0x9f05, 0x9f06, MWA_RAM },
{ 0x9f07, 0x9f07, MWA_RAM, &sprite_bank },
{ 0x9f80, 0x9fbf, ccastles_paletteram_w },
{ 0xa000, 0xffff, MWA_ROM },
{ -1 } /* end of table */
};
INPUT_PORTS_START( input_ports )
PORT_START /* IN0 */
PORT_BIT ( 0x01, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT ( 0x02, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT ( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
PORT_BIT ( 0x08, IP_ACTIVE_LOW, IPT_TILT )
PORT_BITX( 0x10, 0x10, IPT_DIPSWITCH_NAME | IPF_TOGGLE, "Service Mode", OSD_KEY_F2, IP_JOY_NONE, 0 )
PORT_DIPSETTING( 0x10, "Off" )
PORT_DIPSETTING( 0x00, "On" )
PORT_BIT ( 0x20, IP_ACTIVE_HIGH, IPT_VBLANK )
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) /* 1p Jump, non-cocktail start1 */
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 ) /* 2p Jump, non-cocktail start2 */
PORT_START /* IN1 */
PORT_BIT ( 0x07, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT ( 0x08, IP_ACTIVE_LOW, IPT_START1 ) /* cocktail only */
PORT_BIT ( 0x10, IP_ACTIVE_LOW, IPT_START2 ) /* cocktail only */
PORT_DIPNAME (0x20, 0x00, "Cabinet", IP_KEY_NONE )
PORT_DIPSETTING ( 0x00, "Upright" )
PORT_DIPSETTING ( 0x20, "Cocktail" )
PORT_BIT ( 0xc0, IP_ACTIVE_HIGH, IPT_UNKNOWN )
PORT_START /* IN2 */
PORT_ANALOGX( 0xff, 0x7f, IPT_TRACKBALL_Y | IPF_REVERSE, 10, 0, 0, 0, OSD_KEY_UP, OSD_KEY_DOWN, OSD_JOY_UP, OSD_JOY_DOWN, 30 )
PORT_START /* IN3 */
PORT_ANALOGX( 0xff, 0x7f, IPT_TRACKBALL_X, 10, 0, 0, 0, OSD_KEY_LEFT, OSD_KEY_RIGHT, OSD_JOY_LEFT, OSD_JOY_RIGHT, 30 )
INPUT_PORTS_END
static struct GfxLayout ccastles_spritelayout =
{
8,16, /* 8*16 sprites */
256, /* 256 sprites */
4, /* 4 bits per pixel (the most significant bit is always 0) */
{ 0x2000*8+0, 0x2000*8+4, 0, 4 }, /* the three bitplanes are separated */
{ 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,
8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16 },
32*8 /* every sprite takes 32 consecutive bytes */
};
/* there's nothing here, this is just a placeholder to let the video hardware */
/* pick the background color table. */
static struct GfxLayout fakelayout =
{
1,1,
0,
4, /* 4 bits per pixel */
{ 0 },
{ 0 },
{ 0 },
0
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ 1, 0x0000, &ccastles_spritelayout, 0, 1 },
{ 0, 0, &fakelayout, 16, 1 },
{ -1 } /* end of array */
};
static struct POKEYinterface pokey_interface =
{
2, /* 2 chips */
1250000, /* 1.25 MHz??? */
50,
POKEY_DEFAULT_GAIN,
NO_CLIP,
/* The 8 pot handlers */
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
/* The allpot handler */
{ 0, input_port_1_r },
};
static struct MachineDriver machine_driver =
{
/* basic machine hardware */
{
{
CPU_M6502,
1500000, /* 1.5 Mhz */
0,
readmem,writemem,0,0,
interrupt,4
}
},
60, DEFAULT_REAL_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
1, /* single CPU, no need for interleaving */
0,
256, 232, { 0, 255, 0, 231 },
gfxdecodeinfo,
32, 32,
0,
VIDEO_TYPE_RASTER|VIDEO_MODIFIES_PALETTE,
0,
ccastles_vh_start,
ccastles_vh_stop,
ccastles_vh_screenrefresh,
/* sound hardware */
0,0,0,0,
{
{
SOUND_POKEY,
&pokey_interface
}
}
};
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START(ccastles_rom)
ROM_REGION(0x14000) /* 64k for code */
ROM_LOAD( "ccastles.303", 0xA000, 0x2000, 0x10e39fce )
ROM_LOAD( "ccastles.304", 0xC000, 0x2000, 0x74510f72 )
ROM_LOAD( "ccastles.305", 0xE000, 0x2000, 0x9418cf8a )
ROM_LOAD( "ccastles.102", 0x10000, 0x2000, 0xf6ccfbd4 ) /* Bank switched ROMs */
ROM_LOAD( "ccastles.101", 0x12000, 0x2000, 0xe2e17236 ) /* containing level data. */
ROM_REGION_DISPOSE(0x4000) /* temporary space for graphics */
ROM_LOAD( "ccastles.107", 0x0000, 0x2000, 0x39960b7d )
ROM_LOAD( "ccastles.106", 0x2000, 0x2000, 0x9d1d89fc )
ROM_END
ROM_START(ccastle2_rom)
ROM_REGION(0x14000) /* 64k for code */
ROM_LOAD( "ccastles.203", 0xA000, 0x2000, 0x348a96f0 )
ROM_LOAD( "ccastles.204", 0xC000, 0x2000, 0xd48d8c1f )
ROM_LOAD( "ccastles.205", 0xE000, 0x2000, 0x0e4883cc )
ROM_LOAD( "ccastles.102", 0x10000, 0x2000, 0xf6ccfbd4 ) /* Bank switched ROMs */
ROM_LOAD( "ccastles.101", 0x12000, 0x2000, 0xe2e17236 ) /* containing level data. */
ROM_REGION_DISPOSE(0x4000) /* temporary space for graphics */
ROM_LOAD( "ccastles.107", 0x0000, 0x2000, 0x39960b7d )
ROM_LOAD( "ccastles.106", 0x2000, 0x2000, 0x9d1d89fc )
ROM_END
static int hiload(void)
{
/* Read the NVRAM contents from disk */
/* No check necessary */
void *f;
unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];
if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
{
osd_fread(f,&RAM[0x9000],0x100);
osd_fclose(f);
}
return 1;
}
static void hisave(void)
{
void *f;
unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];
if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
{
osd_fwrite(f,&RAM[0x9000],0x100);
osd_fclose(f);
}
}
struct GameDriver ccastles_driver =
{
__FILE__,
0,
"ccastles",
"Crystal Castles (set 1)",
"1983",
"Atari",
"Pat Lawrence\nChris Hardy\nSteve Clynes\nNicola Salmoria\nBrad Oliver",
0,
&machine_driver,
0,
ccastles_rom,
0, 0,
0,
0, /* sound_prom */
input_ports,
0, 0, 0,
ORIENTATION_DEFAULT,
hiload, hisave
};
struct GameDriver ccastle2_driver =
{
__FILE__,
&ccastles_driver,
"ccastle2",
"Crystal Castles (set 2)",
"1983",
"Atari",
"Pat Lawrence\nChris Hardy\nSteve Clynes\nNicola Salmoria\nBrad Oliver",
0,
&machine_driver,
0,
ccastle2_rom,
0, 0,
0,
0, /* sound_prom */
input_ports,
0, 0, 0,
ORIENTATION_DEFAULT,
hiload, hisave
};
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