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canyon.c
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C/C++ Source or Header
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2000-04-04
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9KB
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283 lines
/***************************************************************************
Atari Canyon Bomber Driver
Memory Map:
0000-01FF WRAM
0400-04FF W A0=0:MOTOR1, A0=1:MOTOR2
0500-05FF W A0=0:EXPLODE, A0=1:TIMER RESET
0600-067F W A0=0:WHISTLE1, A0=1:WHISTLE2
0680-06FF W A0=0:LED1, A0=1:LED2
0700-077F W A0=0:ATTRACT1, A0=1:ATTRACT2
0800-0FFF DISPLAY / RAM
1000-17FF SWITCHES
1800-1FFF OPTIONS
2000-27FF ROM1
2800-2FFF ROM2
3000-37FF ROM3
3800-3FFF ROM4 (Program ROM)
(F800-FFFF) ROM4 (Program ROM) - only needed for the 6502 vectors
If you have any questions about how this driver works, don't hesitate to
ask. - Mike Balfour (mab22@po.cwru.edu)
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
/* vidhrdw/canyon.c */
extern void canyon_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
static READ_HANDLER( canyon_options_r )
{
switch (offset & 0x03)
{
case 0x00:
return ((input_port_0_r(0) >> 6) & 0x03);
case 0x01:
return ((input_port_0_r(0) >> 4) & 0x03);
case 0x02:
return ((input_port_0_r(0) >> 2) & 0x03);
case 0x03:
return ((input_port_0_r(0) >> 0) & 0x03);
}
return 0xFF;
}
static READ_HANDLER( canyon_switches_r )
{
switch (offset & 0x07)
{
case 0x00:
return ((input_port_3_r(0) << 7) & 0x80);
case 0x01:
return ((input_port_3_r(0) << 6) & 0x80);
case 0x02:
return ((input_port_3_r(0) << 5) & 0x80) | input_port_1_r(0);
case 0x03:
return ((input_port_3_r(0) << 4) & 0x80) | input_port_2_r(0);
case 0x04:
return ((input_port_3_r(0) << 3) & 0x80);
case 0x05:
return ((input_port_3_r(0) << 2) & 0x80);
case 0x06:
return ((input_port_3_r(0) << 1) & 0x80) | input_port_1_r(0);
case 0x07:
return ((input_port_3_r(0) << 0) & 0x80) | input_port_2_r(0);
}
return 0xFF;
}
WRITE_HANDLER( canyon_led_w )
{
osd_led_w((offset & 0x01), data & 0x01);
}
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0x01ff, MRA_RAM }, /* WRAM */
{ 0x0800, 0x0bff, MRA_RAM }, /* DISPLAY RAM */
{ 0x1000, 0x17ff, canyon_switches_r }, /* SWITCHES */
{ 0x1800, 0x1fff, canyon_options_r }, /* OPTIONS */
{ 0x2000, 0x27ff, MRA_NOP }, /* PROM1 */
{ 0x2800, 0x2fff, MRA_NOP }, /* PROM2 */
{ 0x3000, 0x37ff, MRA_NOP }, /* PROM3 */
{ 0x3800, 0x3fff, MRA_ROM }, /* PROM4 */
{ 0xfff0, 0xffff, MRA_ROM }, /* PROM4 for 6502 vectors */
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0x01ff, MWA_RAM }, /* WRAM */
// { 0x0680, 0x06ff, canyon_led_w },
{ 0x0bd0, 0x0bdf, MWA_RAM, &spriteram, &spriteram_size },
{ 0x0800, 0x0bff, videoram_w, &videoram, &videoram_size }, /* DISPLAY */
{ 0x2000, 0x27ff, MWA_NOP }, /* PROM1 */
{ 0x2800, 0x2fff, MWA_NOP }, /* PROM2 */
{ 0x3000, 0x37ff, MWA_NOP }, /* PROM3 */
{ 0x3800, 0x3fff, MWA_ROM }, /* PROM4 */
{ -1 } /* end of table */
};
INPUT_PORTS_START( canyon )
PORT_START /* DSW - fake port, gets mapped to Canyon Bomber ports */
PORT_DIPNAME( 0x03, 0x00, "Language" )
PORT_DIPSETTING( 0x00, "English" )
PORT_DIPSETTING( 0x01, "Spanish" )
PORT_DIPSETTING( 0x02, "French" )
PORT_DIPSETTING( 0x03, "German" )
PORT_DIPNAME( 0x30, 0x00, "Misses Per Play" )
PORT_DIPSETTING( 0x00, "Three" )
PORT_DIPSETTING( 0x10, "Four" )
PORT_DIPSETTING( 0x20, "Five" )
PORT_DIPSETTING( 0x30, "Six" )
PORT_DIPNAME( 0xC0, 0x80, "Game Cost" )
PORT_DIPSETTING( 0x80, "1 coin/player" )
PORT_DIPSETTING( 0xC0, "2 coins/player" )
PORT_DIPSETTING( 0x40, "2 players/coin" )
PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
PORT_START /* IN1 - fake port, gets mapped */
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 )
PORT_BIT(0xFE, IP_ACTIVE_HIGH, IPT_UNKNOWN )
PORT_START /* IN2 - fake port, gets mapped */
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 | IPF_PLAYER2 )
PORT_BIT(0xFE, IP_ACTIVE_HIGH, IPT_UNKNOWN )
PORT_START /* IN3 - fake port, gets mapped */
PORT_BIT ( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
PORT_BIT ( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
PORT_BIT ( 0x04, IP_ACTIVE_HIGH, IPT_START1 )
PORT_BIT ( 0x08, IP_ACTIVE_HIGH, IPT_START2 )
PORT_SERVICE( 0x10, IP_ACTIVE_HIGH )
PORT_BIT ( 0x20, IP_ACTIVE_HIGH, IPT_VBLANK )
PORT_BIT ( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
PORT_BIT ( 0x80, IP_ACTIVE_HIGH, IPT_TILT ) /* SLAM */
INPUT_PORTS_END
static struct GfxLayout charlayout =
{
8,8, /* 8*8 characters */
64, /* 64 characters */
1, /* 1 bit per pixel */
{ 0 }, /* no separation in 1 bpp */
{ 4, 5, 6, 7, 12, 13, 14, 15 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
16*8 /* every char takes 16 consecutive bytes */
};
static struct GfxLayout motionlayout =
{
32,16, /* 32*16 characters */
4, /* 4 characters? */
1, /* 1 bit per pixel */
{ 0 }, /* no separation in 1 bpp */
{ 0x100*8 + 7, 0x100*8 + 6, 0x100*8 + 5, 0x100*8 + 4, 7, 6, 5, 4,
0x100*8 + 15, 0x100*8 + 14, 0x100*8 + 13, 0x100*8 + 12, 15, 14, 13, 12,
0x100*8 + 256+7, 0x100*8 + 256+6, 0x100*8 + 256+5, 0x100*8 + 256+4, 256+7, 256+6, 256+5, 256+4,
0x100*8 + 256+15, 0x100*8 + 256+14, 0x100*8 + 256+13, 0x100*8 + 256+12, 256+15, 256+14, 256+13, 256+12 },
{ 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 },
64*8 /* every char takes 64 consecutive bytes */
};
static struct GfxLayout bomb_layout =
{
2,2, /* 2*2 bomb */
1, /* 1 character */
1, /* 1 bit per pixel */
{ 0 }, /* no separation in 1 bpp */
{ 4, 4 }, /* I know that this bit is 1 */
{ 3*16, 3*16 }, /* I know that this bit is 1 */
16*8 /* every char takes 16 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ REGION_GFX1, 0, &charlayout, 0, 2 },
{ REGION_GFX2, 0, &motionlayout, 0, 2 },
{ REGION_GFX1, 0, &bomb_layout, 0, 2 },
{ -1 } /* end of array */
};
static unsigned char palette[] =
{
0x00,0x00,0x00, /* BLACK */
0x80,0x80,0x80, /* LT GREY */
0xff,0xff,0xff, /* WHITE */
};
static unsigned short colortable[] =
{
0x01, 0x00,
0x01, 0x02,
};
static void init_palette(unsigned char *game_palette, unsigned short *game_colortable,const unsigned char *color_prom)
{
memcpy(game_palette,palette,sizeof(palette));
memcpy(game_colortable,colortable,sizeof(colortable));
}
static struct MachineDriver machine_driver_canyon =
{
/* basic machine hardware */
{
{
CPU_M6502,
750000, /* 0.3 Mhz ???? */
readmem,writemem,0,0,
nmi_interrupt,1
}
},
60, DEFAULT_REAL_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
1, /* single CPU, no need for interleaving */
0,
/* video hardware */
32*8, 30*8, { 0*8, 32*8-1, 0*8, 30*8-1 },
gfxdecodeinfo,
sizeof(palette) / sizeof(palette[0]) / 3, sizeof(colortable) / sizeof(colortable[0]),
init_palette,
VIDEO_TYPE_RASTER,
0,
generic_vh_start,
generic_vh_stop,
canyon_vh_screenrefresh,
/* sound hardware */
0,0,0,0
};
/***************************************************************************
Game ROMs
***************************************************************************/
ROM_START( canyon )
ROM_REGION( 0x10000, REGION_CPU1 ) /* 64k for code */
ROM_LOAD( "9496-01.d1", 0x3800, 0x0800, 0x8be15080 )
ROM_RELOAD( 0xF800, 0x0800 )
ROM_REGION( 0x400, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "9492-01.n8", 0x0000, 0x0400, 0x7449f754 )
ROM_REGION( 0x200, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "9505-01.n5", 0x0000, 0x0100, 0x60507c07 )
ROM_LOAD( "9506-01.m5", 0x0100, 0x0100, 0x0d63396a )
ROM_END
ROM_START( canbprot )
ROM_REGION( 0x10000, REGION_CPU1 ) /* 64k for code */
ROM_LOAD_NIB_LOW ( "cbp3000l.j1", 0x3000, 0x0800, 0x49cf29a0 )
ROM_LOAD_NIB_HIGH( "cbp3000m.p1", 0x3000, 0x0800, 0xb4385c23 )
ROM_LOAD_NIB_LOW ( "cbp3800l.h1", 0x3800, 0x0800, 0xc7ee4431 )
ROM_RELOAD_NIB_LOW ( 0xf800, 0x0800 ) /* for 6502 vectors */
ROM_LOAD_NIB_HIGH( "cbp3800m.r1", 0x3800, 0x0800, 0x94246a9a )
ROM_RELOAD_NIB_HIGH ( 0xf800, 0x0800 ) /* for 6502 vectors */
ROM_REGION( 0x400, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "9492-01.n8", 0x0000, 0x0400, 0x7449f754 )
ROM_REGION( 0x200, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "9505-01.n5", 0x0000, 0x0100, 0x60507c07 )
ROM_LOAD( "9506-01.m5", 0x0100, 0x0100, 0x0d63396a )
ROM_END
GAMEX( 1977, canyon, 0, canyon, canyon, 0, ROT0, "Atari", "Canyon Bomber", GAME_NO_SOUND )
GAMEX( 1977, canbprot, canyon, canyon, canyon, 0, ROT0, "Atari", "Canyon Bomber (prototype)", GAME_NO_SOUND )