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AmigActive 10
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zerozone.c
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C/C++ Source or Header
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2000-04-23
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9KB
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278 lines
/***************************************************************************
Zero Zone memory map
driver by Brad Oliver
CPU 1 : 68000, uses irq 1
0x000000 - 0x01ffff : ROM
0x080000 - 0x08000f : input ports and dipswitches
0x088000 - 0x0881ff : palette RAM, 256 total colors
0x09ce00 - 0x09d9ff : video ram, 48x32
0x0c0000 - 0x0cffff : RAM
0x0f8000 - 0x0f87ff : RAM (unused?)
TODO:
* adpcm samples don't seem to be playing at the proper tempo - too fast?
* There are a lot of unknown dipswitches
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
void zerozone_vh_screenrefresh(struct osd_bitmap *bitmap, int full_refresh);
int zerozone_vh_start(void);
void zerozone_vh_stop(void);
READ_HANDLER( zerozone_videoram_r );
WRITE_HANDLER( zerozone_videoram_w );
extern unsigned char *zerozone_videoram;
static unsigned char *ram; /* for high score save */
static READ_HANDLER( zerozone_input_r )
{
switch (offset)
{
case 0x00:
return readinputport(0); /* IN0 */
case 0x02:
return (readinputport(1) | (readinputport(2) << 8)); /* IN1 & IN2 */
case 0x08:
return (readinputport(4) << 8);
case 0x0a:
return readinputport(3);
}
logerror("CPU #0 PC %06x: warning - read unmapped memory address %06x\n",cpu_get_pc(),0x800000+offset);
return 0x00;
}
WRITE_HANDLER( zerozone_sound_w )
{
soundlatch_w (offset, (data >> 8) & 0xff);
cpu_cause_interrupt (1, 0xff);
}
static struct MemoryReadAddress readmem[] =
{
{ 0x000000, 0x01ffff, MRA_ROM },
{ 0x080000, 0x08000f, zerozone_input_r },
{ 0x088000, 0x0881ff, paletteram_word_r },
// { 0x098000, 0x098001, MRA_RAM }, /* watchdog? */
{ 0x09ce00, 0x09d9ff, zerozone_videoram_r },
{ 0x0c0000, 0x0cffff, MRA_BANK1 },
{ 0x0f8000, 0x0f87ff, MRA_BANK2 },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x000000, 0x01ffff, MWA_ROM },
{ 0x084000, 0x084001, zerozone_sound_w },
{ 0x088000, 0x0881ff, paletteram_BBBBGGGGRRRRxxxx_word_w, &paletteram },
{ 0x09ce00, 0x09d9ff, zerozone_videoram_w, &zerozone_videoram, &videoram_size },
{ 0x0c0000, 0x0cffff, MWA_BANK1, &ram }, /* RAM */
{ 0x0f8000, 0x0f87ff, MWA_BANK2 },
{ -1 } /* end of table */
};
static struct MemoryReadAddress sound_readmem[] =
{
{ 0x0000, 0x7fff, MRA_ROM },
{ 0x8000, 0x87ff, MRA_RAM },
{ 0x9800, 0x9800, OKIM6295_status_0_r },
{ 0xa000, 0xa000, soundlatch_r },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress sound_writemem[] =
{
{ 0x0000, 0x7fff, MWA_ROM },
{ 0x8000, 0x87ff, MWA_RAM },
{ 0x9800, 0x9800, OKIM6295_data_0_w },
{ -1 } /* end of table */
};
INPUT_PORTS_START( zerozone )
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_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* IN2 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_PLAYER2 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_PLAYER2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_PLAYER2 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_PLAYER2 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER2 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* DSW A */
PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x00, DEF_STR( 6C_1C ))
PORT_DIPSETTING( 0x01, DEF_STR( 4C_1C ))
PORT_DIPSETTING( 0x02, DEF_STR( 3C_1C ))
PORT_DIPSETTING( 0x03, DEF_STR( 2C_1C ))
PORT_DIPSETTING( 0x07, DEF_STR( 1C_1C ))
PORT_DIPSETTING( 0x06, DEF_STR( 1C_2C ))
PORT_DIPSETTING( 0x05, DEF_STR( 1C_3C ))
PORT_DIPSETTING( 0x04, DEF_STR( 1C_4C ))
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x08, DEF_STR( Off ))
PORT_DIPSETTING( 0x00, DEF_STR( On ))
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ))
PORT_DIPSETTING( 0x00, DEF_STR( On ))
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ))
PORT_DIPSETTING( 0x00, DEF_STR( On ))
PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0xc0, "1")
PORT_DIPSETTING( 0x80, "2")
PORT_DIPSETTING( 0x40, "3")
PORT_DIPSETTING( 0x00, "4")
PORT_START /* DSW B */
PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x01, DEF_STR( Off ))
PORT_DIPSETTING( 0x00, DEF_STR( On ))
PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x02, DEF_STR( Off ))
PORT_DIPSETTING( 0x00, DEF_STR( On ))
PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0c, "1")
PORT_DIPSETTING( 0x04, "2")
PORT_DIPSETTING( 0x08, "3")
PORT_DIPSETTING( 0x00, "4")
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ))
PORT_DIPSETTING( 0x00, DEF_STR( On ))
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ))
PORT_DIPSETTING( 0x00, DEF_STR( On ))
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ))
PORT_DIPSETTING( 0x00, DEF_STR( On ))
PORT_SERVICE( 0x80, IP_ACTIVE_LOW )
INPUT_PORTS_END
static struct GfxLayout charlayout =
{
8,8, /* 8*8 characters */
4096, /* 4096 characters */
4, /* 4 bits per pixel */
{ 0, 1, 2, 3 },
{ 0, 4, 8+0, 8+4, 16+0, 16+4, 24+0, 24+4 },
{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
32*8 /* every sprite takes 32 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ REGION_GFX1, 0, &charlayout, 0, 256 }, /* sprites & playfield */
{ -1 } /* end of array */
};
static struct OKIM6295interface okim6295_interface =
{
1, /* 1 chip */
{ 8000 }, /* 8000Hz ??? TODO: find out the real frequency */
{ REGION_SOUND1 }, /* memory region 3 */
{ 100 }
};
static struct MachineDriver machine_driver_zerozone =
{
{
{
CPU_M68000,
10000000, /* 10 MHz */
readmem,writemem,0,0,
m68_level1_irq,1
},
{
CPU_Z80 | CPU_AUDIO_CPU,
1000000, /* 1 MHz ??? */
sound_readmem, sound_writemem,0,0,
ignore_interrupt,0 /* IRQs are triggered by the main cpu */
}
},
60, DEFAULT_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
10,
0,
/* video hardware */
48*8, 32*8, { 1*8, 47*8-1, 2*8, 30*8-1 },
gfxdecodeinfo,
256, 256,
0,
VIDEO_TYPE_RASTER | VIDEO_SUPPORTS_DIRTY | VIDEO_MODIFIES_PALETTE,
0,
zerozone_vh_start,
zerozone_vh_stop,
zerozone_vh_screenrefresh,
/* sound hardware */
0,0,0,0,
{
{
SOUND_OKIM6295,
&okim6295_interface
}
}
};
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( zerozone )
ROM_REGION( 0x20000, REGION_CPU1 ) /* 128k for 68000 code */
ROM_LOAD_EVEN( "zz-4.rom", 0x0000, 0x10000, 0x83718b9b )
ROM_LOAD_ODD ( "zz-5.rom", 0x0000, 0x10000, 0x18557f41 )
ROM_REGION( 0x10000, REGION_CPU2 ) /* sound cpu */
ROM_LOAD( "zz-1.rom", 0x00000, 0x08000, 0x223ccce5 )
ROM_REGION( 0x080000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "zz-6.rom", 0x00000, 0x80000, 0xc8b906b9 )
ROM_REGION( 0x40000, REGION_SOUND1 ) /* ADPCM samples */
ROM_LOAD( "zz-2.rom", 0x00000, 0x20000, 0xc7551e81 )
ROM_LOAD( "zz-3.rom", 0x20000, 0x20000, 0xe348ff5e )
ROM_END
GAME( 1993, zerozone, 0, zerozone, zerozone, 0, ROT0, "Comad", "Zero Zone" )