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atetris.c
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C/C++ Source or Header
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2000-05-04
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9KB
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288 lines
/***************************************************************************
Atari Tetris Memory Map (preliminary)
driver by Zsolt Vasvari
0000-0fff RAM
1000-1fff Video RAM
2000-20ff Palette RAM
2400-25ff EEPROM
4000-7fff Paged ROM (Slapstic controlled)
8000-ffff ROM
I/O
Read
2800-280f Pokey #1
2800-281f Pokey #2
Write
2800-280f Pokey #1
2810-281f Pokey #2
3000 Watchdog
3400 EEPROM enable
3800 ???
3c00 ???
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
void atetris_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
READ_HANDLER( atetris_slapstic_r );
static unsigned char *nvram;
static size_t nvram_size;
static void nvram_handler(void *file,int read_or_write)
{
if (read_or_write)
osd_fwrite(file,nvram,nvram_size);
else
{
if (file)
osd_fread(file,nvram,nvram_size);
else
memset(nvram,0xff,nvram_size);
}
}
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0x20ff, MRA_RAM },
{ 0x2400, 0x25ff, MRA_RAM },
{ 0x2800, 0x280f, pokey1_r },
{ 0x2810, 0x281f, pokey2_r },
{ 0x4000, 0x7fff, atetris_slapstic_r },
{ 0x8000, 0xffff, MRA_ROM },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0x0fff, MWA_RAM },
{ 0x1000, 0x1fff, videoram_w, &videoram, &videoram_size },
{ 0x2000, 0x20ff, paletteram_RRRGGGBB_w, &paletteram },
{ 0x2400, 0x25ff, MWA_RAM, &nvram, &nvram_size },
{ 0x2800, 0x280f, pokey1_w },
{ 0x2810, 0x281f, pokey2_w },
{ 0x3000, 0x3000, watchdog_reset_w },
{ 0x3400, 0x3400, MWA_NOP }, // EEPROM enable
{ 0x3800, 0x3800, MWA_NOP }, // ???
{ 0x3c00, 0x3c00, MWA_NOP }, // ???
{ 0x4000, 0xffff, MWA_ROM },
{ -1 } /* end of table */
};
INPUT_PORTS_START( atetris )
// These ports are read via the Pokeys
PORT_START /* IN0 */
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN2 )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN1 )
PORT_DIPNAME( 0x04, 0x00, "Freeze" )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x04, DEF_STR( On ) )
PORT_BITX(0x08, IP_ACTIVE_HIGH, IPT_SERVICE, "Freeze Step", KEYCODE_F1, IP_JOY_NONE )
PORT_BIT( 0x30, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_VBLANK )
PORT_SERVICE( 0x80, IP_ACTIVE_HIGH )
PORT_START /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 | IPF_PLAYER1)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 | IPF_PLAYER2)
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN | IPF_PLAYER2 | IPF_8WAY )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_PLAYER2 | IPF_8WAY )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT | IPF_PLAYER2 | IPF_8WAY )
INPUT_PORTS_END
// Same as the regular one except they added a Flip Controls switch
INPUT_PORTS_START( atetcktl )
// These ports are read via the Pokeys
PORT_START /* IN0 */
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN2 )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN1 )
PORT_DIPNAME( 0x04, 0x00, "Freeze" )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x04, DEF_STR( On ) )
PORT_BITX(0x08, IP_ACTIVE_HIGH, IPT_SERVICE, "Freeze Step", KEYCODE_F1, IP_JOY_NONE )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_DIPNAME( 0x20, 0x00, "Flip Controls" )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x20, DEF_STR( On ) )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_VBLANK )
PORT_SERVICE( 0x80, IP_ACTIVE_HIGH )
PORT_START /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 | IPF_PLAYER1)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 | IPF_PLAYER2)
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN | IPF_PLAYER2 | IPF_8WAY )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_PLAYER2 | IPF_8WAY )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT | IPF_PLAYER2 | IPF_8WAY )
INPUT_PORTS_END
static struct GfxLayout charlayout =
{
8,8, /* 8*8 chars */
2048, /* 2048 characters */
4, /* 4 bits per pixel */
{ 0,1,2,3 }, // The 4 planes are packed together
{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4},
{ 0*4*8, 1*4*8, 2*4*8, 3*4*8, 4*4*8, 5*4*8, 6*4*8, 7*4*8},
8*8*4 /* every char takes 32 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ REGION_GFX1, 0x0000, &charlayout, 0, 16 },
{ -1 } /* end of array */
};
static struct POKEYinterface pokey_interface =
{
2, /* 2 chips */
1789790, /* ? */
{ 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 */
{ input_port_0_r, input_port_1_r }
};
static struct MachineDriver machine_driver_atetris =
{
/* basic machine hardware */
{
{
CPU_M6502,
1750000, /* 1.75 MHz??? */
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,
/* video hardware */
42*8, 32*8, { 0*8, 42*8-1, 0*8, 30*8-1 },
gfxdecodeinfo,
256, 256,
0,
VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE,
0,
generic_vh_start,
generic_vh_stop,
atetris_vh_screenrefresh,
/* sound hardware */
0,0,0,0,
{
{
SOUND_POKEY,
&pokey_interface
}
},
nvram_handler
};
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( atetris )
ROM_REGION( 0x14000, REGION_CPU1 ) /* 80k for code */
ROM_LOAD( "1100.45f", 0x0000, 0x10000, 0x2acbdb09 )
ROM_REGION( 0x10000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "1101.35a", 0x0000, 0x10000, 0x84a1939f )
ROM_END
ROM_START( atetrisa )
ROM_REGION( 0x14000, REGION_CPU1 ) /* 80k for code */
ROM_LOAD( "d1", 0x0000, 0x10000, 0x2bcab107 )
ROM_REGION( 0x10000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "1101.35a", 0x0000, 0x10000, 0x84a1939f )
ROM_END
ROM_START( atetrisb )
ROM_REGION( 0x14000, REGION_CPU1 ) /* 80k for code */
ROM_LOAD( "tetris.01", 0x0000, 0x10000, 0x944d15f6 )
ROM_REGION( 0x10000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "tetris.02", 0x0000, 0x10000, 0x5c4e7258 )
/* there's an extra EEPROM, maybe used for protection crack, which */
/* however doesn't seem to be required to run the game in this driver. */
ROM_REGION( 0x0800, REGION_USER1 )
ROM_LOAD( "tetris.03", 0x0000, 0x0800, 0x26618c0b )
ROM_END
ROM_START( atetcktl )
ROM_REGION( 0x14000, REGION_CPU1 ) /* 80k for code */
ROM_LOAD( "tetcktl1.rom", 0x0000, 0x10000, 0x9afd1f4a )
ROM_REGION( 0x10000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "1103.35a", 0x0000, 0x10000, 0xec2a7f93 )
ROM_END
ROM_START( atetckt2 )
ROM_REGION( 0x14000, REGION_CPU1 ) /* 80k for code */
ROM_LOAD( "1102.45f", 0x0000, 0x10000, 0x1bd28902 )
ROM_REGION( 0x10000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "1103.35a", 0x0000, 0x10000, 0xec2a7f93 )
ROM_END
static void init_atetris(void)
{
unsigned char *RAM = memory_region(REGION_CPU1);
// Move the lower 16k to 0x10000
memcpy(&RAM[0x10000], &RAM[0x00000], 0x4000);
memset(&RAM[0x00000], 0, 0x4000);
}
GAME( 1988, atetris, 0, atetris, atetris, atetris, ROT0, "Atari Games", "Tetris (set 1)" )
GAME( 1988, atetrisa, atetris, atetris, atetris, atetris, ROT0, "Atari Games", "Tetris (set 2)" )
GAME( 1988, atetrisb, atetris, atetris, atetris, atetris, ROT0, "bootleg", "Tetris (bootleg)" )
GAME( 1989, atetcktl, atetris, atetris, atetcktl, atetris, ROT270, "Atari Games", "Tetris (Cocktail set 1)" )
GAME( 1989, atetckt2, atetris, atetris, atetcktl, atetris, ROT270, "Atari Games", "Tetris (Cocktail set 2)" )