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AmigActive 10
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qwakprot.c
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C/C++ Source or Header
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2000-04-04
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8KB
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272 lines
/***************************************************************************
Qwak (prototype) driver.
This driver is based *extremely* loosely on the Centipede driver.
The following memory map is pure speculation:
0000-01FF R/W RAM
0200-025F R/W RAM? ER2055 NOVRAM maybe?
0300-03FF R/W RAM
0400-07BF R/W Video RAM
07C0-07FF R/W Sprite RAM
1000 W ???
2000 W ???
2001 W ???
2003 W Start LED 1
2004 W Start LED 2
3000 R $40 = !UP $80 = unused?
3001 R $40 = !DOWN $80 = ???
3002 R $40 = !LEFT $80 = ???
3003 R $40 = !RIGHT $80 = unused?
3004 R $40 = !START1 $80 = ???
3005 R $40 = !START2 $80 = !COIN
3006 R $40 = !BUTTON1 $80 = !COIN
3007 R $40 = unused? $80 = !COIN
4000 R ???
6000-600F R/W Pokey 1
7000-700F R/W Pokey 2
8000-BFFF R ROM
TODO:
- fix colors
- coins seem to count twice instead of once?
- find DIP switches (should be at $4000, I would think)
- figure out what $1000, $2000, and $2001 are used for
- figure out exactly what the unknown bits in the $3000 area do
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"
void qwakprot_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
WRITE_HANDLER( qwakprot_paletteram_w );
static WRITE_HANDLER( qwakprot_led_w )
{
osd_led_w(offset,~data >> 7);
}
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0x01ff, MRA_RAM },
{ 0x0200, 0x025f, MRA_RAM },
{ 0x0300, 0x03ff, MRA_RAM },
{ 0x0400, 0x07ff, MRA_RAM },
{ 0x3000, 0x3000, input_port_0_r },
{ 0x3001, 0x3001, input_port_1_r },
{ 0x3002, 0x3002, input_port_2_r },
{ 0x3003, 0x3003, input_port_3_r },
{ 0x3004, 0x3004, input_port_4_r },
{ 0x3005, 0x3005, input_port_5_r },
{ 0x3006, 0x3006, input_port_6_r },
{ 0x3007, 0x3007, input_port_7_r },
{ 0x4000, 0x4000, input_port_8_r }, /* just guessing */
{ 0x6000, 0x600f, pokey1_r },
{ 0x7000, 0x700f, pokey2_r },
{ 0x8000, 0xbfff, MRA_ROM },
{ 0xf000, 0xffff, MRA_ROM }, /* for the reset / interrupt vectors */
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0x01ff, MWA_RAM },
{ 0x0200, 0x025f, MWA_RAM },
{ 0x0300, 0x03ff, MWA_RAM },
{ 0x0400, 0x07bf, videoram_w, &videoram, &videoram_size },
{ 0x07c0, 0x07ff, MWA_RAM, &spriteram },
{ 0x1c00, 0x1c0f, qwakprot_paletteram_w, &paletteram }, /* just guessing */
// { 0x2000, 0x2001, coin_counter_w },
{ 0x2003, 0x2004, qwakprot_led_w },
{ 0x6000, 0x600f, pokey1_w },
{ 0x7000, 0x700f, pokey2_w },
{ 0x8000, 0xbfff, MWA_ROM },
{ -1 } /* end of table */
};
INPUT_PORTS_START( qwakprot )
PORT_START /* IN0 */
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* ??? */
PORT_START /* IN1 */
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
PORT_BIT ( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK ) /* ??? */
PORT_START /* IN2 */
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_VBLANK ) /* ??? */
PORT_START /* IN3 */
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* ??? */
PORT_START /* IN4 */
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* ??? */
PORT_START /* IN5 */
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_START /* IN6 */
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_START /* IN7 */
PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* ??? */
PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_COIN3 )
PORT_START /* IN8 */
PORT_DIPNAME( 0x01, 0x00, "DIP 1" )
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x00, "DIP 2" )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x00, "DIP 3" )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x00, "DIP 4" )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x00, "DIP 5" )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x00, "DIP 6" )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x00, "DIP 7" )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x00, "DIP 8" )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
INPUT_PORTS_END
static struct GfxLayout charlayout =
{
8,8, /* 8*8 characters */
128, /* 128 characters */
4, /* 4 bits per pixel */
{ 0x3000*8, 0x2000*8, 0x1000*8, 0 }, /* the four bitplanes are separated */
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
16*8 /* every char takes 8 consecutive bytes, then skip 8 */
};
static struct GfxLayout spritelayout =
{
8,16, /* 16*8 sprites */
128, /* 128 sprites */
4, /* 4 bits per pixel */
{ 0x3000*8, 0x2000*8, 0x1000*8, 0 }, /* the four bitplanes are separated */
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
16*8 /* every sprite takes 16 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ REGION_GFX1, 0x0800, &charlayout, 0, 1 },
{ REGION_GFX1, 0x0808, &charlayout, 0, 1 },
{ REGION_GFX1, 0x0000, &spritelayout, 0, 1 },
{ -1 } /* end of array */
};
static struct POKEYinterface pokey_interface =
{
2, /* 2 chips */
1500000, /* 1.5 MHz??? */
{ 50, 50 },
/* The 8 pot handlers */
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
{ 0, 0 },
/* The allpot handler */
{ 0, 0 },
};
static struct MachineDriver machine_driver_qwakprot =
{
/* basic machine hardware */
{
{
CPU_M6502,
12096000/8, /* 1.512 Mhz?? */
readmem,writemem,0,0,
interrupt,4
}
},
60, 1460, /* frames per second, vblank duration??? */
1, /* single CPU, no need for interleaving */
0,
/* video hardware */
32*8, 32*8, { 0*8, 32*8-1, 0*8, 30*8-1 },
gfxdecodeinfo,
16, 16,
0,
VIDEO_TYPE_RASTER|VIDEO_SUPPORTS_DIRTY|VIDEO_MODIFIES_PALETTE,
0,
generic_vh_start,
generic_vh_stop,
qwakprot_vh_screenrefresh,
/* sound hardware */
0,0,0,0,
{
{
SOUND_POKEY,
&pokey_interface
}
}
};
/***************************************************************************
Game ROMs
***************************************************************************/
ROM_START( qwakprot )
ROM_REGION( 0x10000, REGION_CPU1 ) /* 64k for code */
ROM_LOAD( "qwak8000.bin", 0x8000, 0x1000, 0x4d002d8a )
ROM_LOAD( "qwak9000.bin", 0x9000, 0x1000, 0xe0c78fd7 )
ROM_LOAD( "qwaka000.bin", 0xa000, 0x1000, 0xe5770fc9 )
ROM_LOAD( "qwakb000.bin", 0xb000, 0x1000, 0x90771cc0 )
ROM_RELOAD( 0xf000, 0x1000 ) /* for the reset and interrupt vectors */
ROM_REGION( 0x4000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "qwakgfx0.bin", 0x0000, 0x1000, 0xbed2c067 )
ROM_LOAD( "qwakgfx1.bin", 0x1000, 0x1000, 0x73a31d28 )
ROM_LOAD( "qwakgfx2.bin", 0x2000, 0x1000, 0x07fd9e80 )
ROM_LOAD( "qwakgfx3.bin", 0x3000, 0x1000, 0xe8416f2b )
ROM_END
GAMEX( 1982, qwakprot, 0, qwakprot, qwakprot, 0, ROT270, "Atari", "Qwak (prototype)", GAME_NO_COCKTAIL )