📄 blstroid.c
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/***************************************************************************
Blasteroids Memory Map
----------------------
BLASTEROIDS 68010 MEMORY MAP
Function Address R/W DATA
-------------------------------------------------------------
Program ROM 000000-03FFFF R D0-D15
Slapstic Program ROM 038000-03FFFF R D0-D15
Watchdog reset FF8000 W xx
IRQ Acknowledge FF8200 W xx
VBLANK Acknowledge FF8400 W xx
Unlock EEPROM FF8600 W xx
Priority RAM (1=MO, 0=PF) FF8800-FF89FE W D0
Audio Send Port FF8A01 W D0-D7
Sound Processor Reset FF8C00 W xx
Halt CPU until HBLANK FF8E00 W xx
Audio Receive Port FF9401 R D0-D7
Whirly-Gig (Player 1) FF9801 R D0-D7
Whirly-Gig (Player 2) FF9805 R D0-D7
Self-Test FF9C01 R D7
Audio Busy Flag R D6
Vertical Blank R D5
Horizontal Blank R D4
Player 1 Button 4 R D3
Player 1 Transform R D2
Player 1 Thrust R D1
Player 1 Fire R D0
Player 2 Button 4 FF9C03 R D3
Player 2 Transform R D2
Player 2 Thrust R D1
Player 2 Fire R D0
Color RAM Motion Object FFA000-FFA1FE R/W D0-D14
Color RAM Playfield FFA200-FFA2FE R/W D0-D14
EEPROM FFB001-FFB3FF R/W D0-D7
Playfield RAM (40x30) FFC000-FFCFFF R/W D0-D15
Row Programmable Interrupt FFC050-FFCED0 R/W D15
Motion Object V Position FFD000-FFDFF8 R/W D7-D15
Motion Object V Size R/W D0-D3
Motion Object H Flip FFD002-FFDFFA R/W D15
Motion Object V Flip R/W D14
Motion Object Stamp R/W D0-D13
Motion Object Link FFD004-FFDFFC R/W D3-D11
Motion Object H Position FFD006-FFDFFE R/W D6-D15
Motion Object Palette R/W D0-D3
RAM FFE000-FFFFFF R/W
BLASTEROIDS 6502 MEMORY MAP
Function Address R/W Data
---------------------------------------------------------------
Program RAM 0000-1FFF R/W D0-D7
Music 2000-2001 R/W D0-D7
Read 68010 Port (Input Buffer) 280A R D0-D7
Self-Test (Active Low) 280C R D7
/NMI? R D6
Output Buffer Full (@2A02) (Active High) R D5
TMS5220 ready (Active Low) R D4
Auxilliary Coin Switch R D2
Left Coin Switch R D1
Right Coin Switch R D0
IRQ Acknowledge 280E W xx
Write to TMS5220 2A00 W D0-D7
Write 68010 Port (Outbut Buffer) 2A02 W D0-D7
Select ROM Bank 2A04 W D6-D7
Coin Counters W D4-D5
TMS5220 Squeak W D3
TMS5220 Reset W D2
TMS5220 Write Strobe W D1
YM2151 Reset W D0
Mixer 2A06 W D0-D7
Banked Program ROM (4K bytes) 3000-3FFF R D0-D7
Program ROM (48K bytes) 4000-FFFF R D0-D7
****************************************************************************/
#include "driver.h"
#include "machine/atarigen.h"
#include "vidhrdw/generic.h"
#include "sndhrdw/pokey.h"
#include "sndhrdw/5220intf.h"
#include "sndhrdw/2151intf.h"
int blstroid_io_r (int offset);
int blstroid_6502_switch_r (int offset);
int blstroid_playfieldram_r (int offset);
void blstroid_tms5220_w (int offset, int data);
void blstroid_6502_ctl_w (int offset, int data);
void blstroid_sound_reset_w (int offset, int data);
void blstroid_priorityram_w (int offset, int data);
void blstroid_playfieldram_w (int offset, int data);
int blstroid_interrupt (void);
int blstroid_sound_interrupt (void);
void blstroid_init_machine (void);
int blstroid_vh_start (void);
void blstroid_vh_stop (void);
void blstroid_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
/*************************************
*
* Main CPU memory handlers
*
*************************************/
static struct MemoryReadAddress blstroid_readmem[] =
{
{ 0x000000, 0x03ffff, MRA_ROM },
{ 0xff9400, 0xff9403, atarigen_sound_r },
{ 0xff9800, 0xff9803, input_port_0_r },
{ 0xff9804, 0xff9807, input_port_1_r },
{ 0xff9c00, 0xff9c03, blstroid_io_r },
{ 0xffa000, 0xffa3ff, paletteram_word_r },
{ 0xffb000, 0xffb3ff, atarigen_eeprom_r },
{ 0xffc000, 0xffcfff, blstroid_playfieldram_r },
{ 0xffd000, 0xffdfff, MRA_BANK3 },
{ 0xffe000, 0xffffff, MRA_BANK2 },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress blstroid_writemem[] =
{
{ 0x000000, 0x03ffff, MWA_ROM },
{ 0xff8000, 0xff8003, watchdog_reset_w },
{ 0xff8200, 0xff8203, MWA_NOP }, /* IRQ ack */
{ 0xff8400, 0xff8403, MWA_NOP }, /* VBLANK ack */
{ 0xff8600, 0xff8603, atarigen_eeprom_enable_w },
{ 0xff8800, 0xff89ff, blstroid_priorityram_w },
{ 0xff8a00, 0xff8a03, atarigen_sound_w },
{ 0xff8c00, 0xff8c03, blstroid_sound_reset_w },
{ 0xff8e00, 0xff8e03, MWA_NOP }, /* halt until HBLANK */
{ 0xffa000, 0xffa3ff, paletteram_xRRRRRGGGGGBBBBB_word_w, &paletteram },
{ 0xffb000, 0xffb3ff, atarigen_eeprom_w, &atarigen_eeprom, &atarigen_eeprom_size },
{ 0xffc000, 0xffcfff, blstroid_playfieldram_w, &atarigen_playfieldram, &atarigen_playfieldram_size },
{ 0xffd000, 0xffdfff, MWA_BANK3, &atarigen_spriteram, &atarigen_spriteram_size },
{ 0xffe000, 0xffffff, MWA_BANK2 },
{ -1 } /* end of table */
};
/*************************************
*
* Sound CPU memory handlers
*
*************************************/
static struct MemoryReadAddress blstroid_sound_readmem[] =
{
{ 0x0000, 0x1fff, MRA_RAM },
{ 0x2000, 0x2001, YM2151_status_port_0_r },
{ 0x280a, 0x280a, atarigen_6502_sound_r },
{ 0x280c, 0x280c, blstroid_6502_switch_r },
{ 0x280e, 0x280e, MRA_NOP }, /* IRQ ACK */
{ 0x3000, 0x3fff, MRA_BANK8 },
{ 0x4000, 0xffff, MRA_ROM },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress blstroid_sound_writemem[] =
{
{ 0x0000, 0x1fff, MWA_RAM },
{ 0x2000, 0x2000, YM2151_register_port_0_w },
{ 0x2001, 0x2001, YM2151_data_port_0_w },
{ 0x280e, 0x280e, MWA_NOP }, /* IRQ ACK */
{ 0x2a00, 0x2a00, blstroid_tms5220_w },
{ 0x2a02, 0x2a02, atarigen_6502_sound_w },
{ 0x2a04, 0x2a04, blstroid_6502_ctl_w },
{ 0x2a06, 0x2a06, MWA_NOP }, /* mixer */
{ 0x3000, 0xffff, MWA_ROM },
{ -1 } /* end of table */
};
/*************************************
*
* Port definitions
*
*************************************/
INPUT_PORTS_START( blstroid_ports )
PORT_START /* IN0 */
PORT_ANALOG ( 0xff, 0, IPT_DIAL | IPF_PLAYER1, 100, 0xff, 0, 0 )
PORT_START /* IN1 */
PORT_ANALOG ( 0xff, 0, IPT_DIAL | IPF_PLAYER2, 100, 0xff, 0, 0 )
PORT_START /* DSW */
PORT_BITX( 0x80, 0x80, IPT_DIPSWITCH_NAME | IPF_TOGGLE, "Self Test", OSD_KEY_F2, IP_JOY_NONE, 0 )
PORT_DIPSETTING( 0x80, "Off")
PORT_DIPSETTING( 0x00, "On")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_VBLANK )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 | IPF_PLAYER1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER1 )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )
PORT_START /* IN4 */
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 | IPF_PLAYER2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER2 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
PORT_START /* IN4 */
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN3 )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED ) /* speech chip ready */
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED ) /* output buffer full */
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) /* input buffer full */
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED ) /* self test */
INPUT_PORTS_END
/*************************************
*
* Graphics definitions
*
*************************************/
static struct GfxLayout blstroid_pflayout =
{
16,8, /* 16*8 chars (doubled horizontally) */
8192, /* 8192 chars */
4, /* 4 bits per pixel */
{ 0, 1, 2, 3 },
{ 0,0, 4,4, 8,8, 12,12, 16,16, 20,20, 24,24, 28,28 },
{ 0*8, 4*8, 8*8, 12*8, 16*8, 20*8, 24*8, 28*8 },
32*8 /* every char takes 32 consecutive bytes */
};
static struct GfxLayout blstroid_molayout =
{
16,8, /* 16*8 chars */
16384, /* 16384 chars */
4, /* 4 bits per pixel */
{ 0, 1, 2, 3 },
{ 0x80000*8+0, 0x80000*8+4, 0, 4, 0x80000*8+8, 0x80000*8+12, 8, 12,
0x80000*8+16, 0x80000*8+20, 16, 20, 0x80000*8+24, 0x80000*8+28, 24, 28 },
{ 0*8, 4*8, 8*8, 12*8, 16*8, 20*8, 24*8, 28*8 },
32*8 /* every char takes 32 consecutive bytes */
};
static struct GfxDecodeInfo blstroid_gfxdecodeinfo[] =
{
{ 1, 0x00000, &blstroid_pflayout, 256, 16 },
{ 1, 0x40000, &blstroid_molayout, 0, 16 },
{ -1 } /* end of array */
};
/*************************************
*
* Sound definitions
*
*************************************/
static struct TMS5220interface tms5220_interface =
{
640000, /* clock speed (80*samplerate) */
100, /* volume */
0 /* irq handler */
};
static struct YM2151interface ym2151_interface =
{
1, /* 1 chip */
3579580, /* 3.58 MHZ ? */
{ 60 },
{ 0 }
};
/*************************************
*
* Machine driver
*
*************************************/
static struct MachineDriver blstroid_machine_driver =
{
/* basic machine hardware */
{
{
CPU_M68000,
7159160, /* 7.159 Mhz */
0,
blstroid_readmem,blstroid_writemem,0,0,
blstroid_interrupt,1
},
{
CPU_M6502,
1789790, /* 1.791 Mhz */
2,
blstroid_sound_readmem,blstroid_sound_writemem,0,0,
0,0,
blstroid_sound_interrupt,250
},
},
60, DEFAULT_REAL_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
10,
blstroid_init_machine,
/* video hardware */
80*8, 30*8, { 0*8, 80*8-1, 0*8, 30*8-1 },
blstroid_gfxdecodeinfo,
512,512,
0,
VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE | VIDEO_UPDATE_BEFORE_VBLANK |
VIDEO_SUPPORTS_DIRTY | VIDEO_PIXEL_ASPECT_RATIO_1_2,
0,
blstroid_vh_start,
blstroid_vh_stop,
blstroid_vh_screenrefresh,
/* sound hardware */
SOUND_SUPPORTS_STEREO,0,0,0,
{
{
SOUND_YM2151,
&ym2151_interface
},
{
SOUND_TMS5220,
&tms5220_interface
}
}
};
/*************************************
*
* ROM definition(s)
*
*************************************/
ROM_START( blstroid_rom )
ROM_REGION(0x40000) /* 4*64k for 68000 code */
ROM_LOAD_EVEN( "blstroid.6c", 0x00000, 0x10000, 0x5a092513 )
ROM_LOAD_ODD ( "blstroid.6b", 0x00000, 0x10000, 0x486aac51 )
ROM_LOAD_EVEN( "blstroid.4c", 0x20000, 0x10000, 0xd0fa38fe )
ROM_LOAD_ODD ( "blstroid.4b", 0x20000, 0x10000, 0x744bf921 )
ROM_REGION_DISPOSE(0x140000) /* temporary space for graphics (disposed after conversion) */
ROM_LOAD( "blstroid.1l", 0x000000, 0x10000, 0x3c2daa5b ) /* playfield */
ROM_LOAD( "blstroid.1m", 0x010000, 0x10000, 0xf84f0b97 ) /* playfield */
ROM_LOAD( "blstroid.3l", 0x020000, 0x10000, 0xae5274f0 ) /* playfield */
ROM_LOAD( "blstroid.3m", 0x030000, 0x10000, 0x4bb72060 ) /* playfield */
ROM_LOAD( "blstroid.5m", 0x040000, 0x10000, 0x50e0823f ) /* mo */
ROM_LOAD( "blstroid.6m", 0x050000, 0x10000, 0x729de7a9 ) /* mo */
ROM_LOAD( "blstroid.8m", 0x060000, 0x10000, 0x090e42ab ) /* mo */
ROM_LOAD( "blstroid.10m", 0x070000, 0x10000, 0x1ff79e67 ) /* mo */
ROM_LOAD( "blstroid.11m", 0x080000, 0x10000, 0x4be1d504 ) /* mo */
ROM_LOAD( "blstroid.13m", 0x090000, 0x10000, 0xe4409310 ) /* mo */
ROM_LOAD( "blstroid.14m", 0x0a0000, 0x10000, 0x7aaca15e ) /* mo */
ROM_LOAD( "blstroid.16m", 0x0b0000, 0x10000, 0x33690379 ) /* mo */
ROM_LOAD( "blstroid.5n", 0x0c0000, 0x10000, 0x2720ee71 ) /* mo */
ROM_LOAD( "blstroid.6n", 0x0d0000, 0x10000, 0x2faecd15 ) /* mo */
ROM_LOAD( "blstroid.8n", 0x0e0000, 0x10000, 0xf10e59ed ) /* mo */
ROM_LOAD( "blstroid.10n", 0x0f0000, 0x10000, 0x4d5fc284 ) /* mo */
ROM_LOAD( "blstroid.11n", 0x100000, 0x10000, 0xa70fc6e6 ) /* mo */
ROM_LOAD( "blstroid.13n", 0x110000, 0x10000, 0xf423b4f8 ) /* mo */
ROM_LOAD( "blstroid.14n", 0x120000, 0x10000, 0x56fa3d16 ) /* mo */
ROM_LOAD( "blstroid.16n", 0x130000, 0x10000, 0xf257f738 ) /* mo */
ROM_REGION(0x14000) /* 64k for 6502 code */
ROM_LOAD( "blstroid.snd", 0x10000, 0x4000, 0xbaa8b5fe )
ROM_CONTINUE( 0x04000, 0xc000 )
ROM_END
/*************************************
*
* Game driver(s)
*
*************************************/
struct GameDriver blstroid_driver =
{
__FILE__,
0,
"blstroid",
"Blasteroids",
"1987",
"Atari Games",
"Aaron Giles (MAME driver)\nNeil Bradley (Hardware Info)",
0,
&blstroid_machine_driver,
0,
blstroid_rom,
0,
0,
0,
0, /* sound_prom */
blstroid_ports,
0, 0, 0, /* colors, palette, colortable */
ORIENTATION_DEFAULT,
atarigen_hiload, atarigen_hisave
};
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