📄 gauntlet.c
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/***************************************************************************
Gauntlet Memory Map
-----------------------------------
GAUNTLET 68010 MEMORY MAP
Function Address R/W DATA
-------------------------------------------------------------
Program ROM/Operating System 000000-00FFFF R D0-D15
Program ROM/SLAPSTIC 038000-03FFFF R D0-D15
Program ROM/Main 040000-07FFFF R D0-D15
Spare RAM 800000-801FFF R/W D0-D15
EEPROM 802001-802FFF R/W D7-D0
Player 1 Input (See detail below) 803001 R D0-D71
Player 2 Input 803003 R D0-D7
Player 3 Input 803005 R D0-D7
Player 4 Input 803007 R D0-D7
Player Inputs:
Joystick Up D7
Joystick Down D6
Joystick Left D5
Joystick Right D4
Spare D3
Spare D2
Fire D1
Magic/Start D0
VBLANK (Active Low) 803009 R D6
Outbut/Buffer Full (@803170) 803009 R D5
(Active High)
Input/Buffer Full (@80300F) 803009 R D4
(Active High)
Self-Test (Active Low) 803009 R D3
Read Sound Processor (6502) 80300F R D0-D7
Watchdog (128 msec. timeout) 803100 W xx
LED-1 (Low On) 803121 W D0
LED-2 (Low-On) 803123 W D0
LED-3 (Low On) 803125 W D0
LED-4 (Low On) 803127 W D0
Sound Processor Reset (Low Reset) 80312F W D0
VBlank Acknowledge 803140 W xx
Unlock EEPROM 803150 W xx
Write Sound Processor (6502) 803171 W D0-D7
Playfield RAM 900000-901FFF R/W D0-D15
Motion Object Picture 902000-9027FF R/W D0-D15
Motion Object Horizontal Position 902800-902FFF R/W D0-D15
Motion Object Vertical Position 903000-9037FF R/W D0-D15
Motion Object Link 903800-903FFF R/W D0-D15
Spare RAM 904000-904FFF R/W D0-D15
Alphanumerics RAM 905000-905FFF R/W D0-D15
Playfield Vertical Scroll 905F6E,905F6F R/W D7-D15
Playfield ROM Bank Select 905F6F R/W
Color RAM Alpha 910000-9101FF R/W D0-D15
Color RAM Motion Object 910200-9103FF R/W D0-D15
Color RAM Playfield Shadow 910400-9104FF R/W D0-D15
Color RAM Playfield 910500-9105FF R/W D0-D15
Color RAM (Spare) 910600-9107FF R/W D0-D15
Playfield Horizontal Scroll 930000,930001 W D0-D8
NOTE: All addresses can be accessed in byte or word mode.
GAUNTLET 6502 MEMORY MAP
Function Address R/W Data
---------------------------------------------------------------
Program RAM 0000-0FFF R/W D0-D7
Write 68010 Port (Outbut Buffer) 1000 W D0-D7
Read 68010 Port (Input Buffer) 1010 R D0-D7
Audio Mix:
Speech Mix 1020 W D5-D7
Effects Mix 1020 W D3,D4
Music Mix 1020 W D0-D2
Coin 1 (Left) 1020 R D3
Coin 2 1020 R D2
Coin 3 1020 R D1
Coin 4 (Right) 1020 R D0
Data Available (@ 1010) (Active High) 1030-1030 R D7
Output Buffer Full (@1000) (Active High) 1030 R D6
Speech Ready (Active Low) 1030 R D5
Self-Test (Active Low) 1030 R D4
Music Reset (Low Reset) 1030 W D7
Speech Write (Active Low) 1031 W D7
Speech Reset (Active Low) 1032 W D7
Speech Squeak (Low = 650KHz Clock) 1033 W D7
Coin Counter Right (Active High) 1034 W D7
Coin Counter Left (Active High) 1035 W D7
Effects 1800-180F R/W D0-D7
Music 1810-1811 R/W D0-D7
Speech 1820 W D0-D7
Interrupt Acknowledge 1830 R/W xx
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"
extern unsigned char *gauntlet_speed_check;
int gauntlet_control_r (int offset);
int gauntlet_io_r (int offset);
int gauntlet_68010_speedup_r (int offset);
int gauntlet_6502_speedup_r (int offset);
int gauntlet_6502_switch_r (int offset);
int gauntlet_playfieldram_r (int offset);
int gauntlet_alpharam_r (int offset);
int gauntlet_vscroll_r (int offset);
void gauntlet_io_w (int offset, int data);
void gauntlet_68010_speedup_w (int offset, int data);
void gauntlet_6502_mix_w (int offset, int data);
void gauntlet_sound_ctl_w (int offset, int data);
void gauntlet_tms_w (int offset, int data);
void gauntlet_playfieldram_w (int offset, int data);
void gauntlet_alpharam_w (int offset, int data);
void gauntlet_vscroll_w (int offset, int data);
int gauntlet_interrupt (void);
int gauntlet_sound_interrupt (void);
void gauntlet_init_machine (void);
void gaunt2p_init_machine (void);
void gauntlet2_init_machine (void);
int gauntlet_vh_start (void);
void gauntlet_vh_stop (void);
void gauntlet_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
/*************************************
*
* Main CPU memory handlers
*
*************************************/
static struct MemoryReadAddress gauntlet_readmem[] =
{
{ 0x000000, 0x037fff, MRA_ROM },
{ 0x038000, 0x03ffff, atarigen_slapstic_r },
{ 0x040000, 0x07ffff, MRA_ROM },
{ 0x800000, 0x801fff, MRA_BANK1 },
{ 0x802000, 0x802fff, atarigen_eeprom_r },
{ 0x803000, 0x803007, gauntlet_control_r },
{ 0x803008, 0x80300f, gauntlet_io_r },
{ 0x900000, 0x901fff, gauntlet_playfieldram_r },
{ 0x902000, 0x903fff, MRA_BANK4 },
{ 0x904000, 0x904003, gauntlet_68010_speedup_r },
{ 0x904004, 0x904fff, MRA_BANK2 },
{ 0x905f6c, 0x905f6f, gauntlet_vscroll_r },
{ 0x905000, 0x905eff, gauntlet_alpharam_r },
{ 0x905f00, 0x905fff, MRA_BANK3 },
{ 0x910000, 0x9107ff, paletteram_word_r },
{ 0x930000, 0x930003, MRA_BANK5 },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress gauntlet_writemem[] =
{
{ 0x000000, 0x037fff, MWA_ROM },
{ 0x038000, 0x03ffff, atarigen_slapstic_w, &atarigen_slapstic },
{ 0x040000, 0x07ffff, MWA_ROM },
{ 0x800000, 0x801fff, MWA_BANK1 },
{ 0x802000, 0x802fff, atarigen_eeprom_w, &atarigen_eeprom, &atarigen_eeprom_size },
{ 0x803100, 0x803103, MWA_NOP },
{ 0x803120, 0x80312f, gauntlet_io_w },
{ 0x803140, 0x803143, MWA_NOP },
{ 0x803150, 0x803153, atarigen_eeprom_enable_w },
{ 0x803170, 0x803173, atarigen_sound_w },
{ 0x900000, 0x901fff, gauntlet_playfieldram_w, &atarigen_playfieldram, &atarigen_playfieldram_size },
{ 0x902000, 0x903fff, MWA_BANK4, &atarigen_spriteram, &atarigen_spriteram_size },
{ 0x904000, 0x904003, gauntlet_68010_speedup_w, &gauntlet_speed_check },
{ 0x904004, 0x904fff, MWA_BANK2 },
{ 0x905f6c, 0x905f6f, gauntlet_vscroll_w, &atarigen_vscroll },
{ 0x905000, 0x905eff, gauntlet_alpharam_w, &atarigen_alpharam, &atarigen_alpharam_size },
{ 0x905f00, 0x905fff, MWA_BANK3 },
{ 0x910000, 0x9107ff, paletteram_IIIIRRRRGGGGBBBB_word_w, &paletteram },
{ 0x930000, 0x930003, MWA_BANK5, &atarigen_hscroll },
{ -1 } /* end of table */
};
/*************************************
*
* Sound CPU memory handlers
*
*************************************/
static struct MemoryReadAddress gauntlet_sound_readmem[] =
{
{ 0x0211, 0x0211, gauntlet_6502_speedup_r },
{ 0x0000, 0x0fff, MRA_RAM },
{ 0x1010, 0x101f, atarigen_6502_sound_r },
{ 0x1020, 0x102f, input_port_4_r },
{ 0x1030, 0x103f, gauntlet_6502_switch_r },
{ 0x1800, 0x180f, pokey1_r },
{ 0x1811, 0x1811, YM2151_status_port_0_r },
{ 0x1830, 0x183f, MRA_NOP },
{ 0x4000, 0xffff, MRA_ROM },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress gauntlet_sound_writemem[] =
{
{ 0x0000, 0x0fff, MWA_RAM },
{ 0x1000, 0x100f, atarigen_6502_sound_w },
{ 0x1020, 0x102f, MWA_NOP/*gauntlet_6502_mix_w*/ },
{ 0x1030, 0x103f, gauntlet_sound_ctl_w },
{ 0x1800, 0x180f, pokey1_w },
{ 0x1810, 0x1810, YM2151_register_port_0_w },
{ 0x1811, 0x1811, YM2151_data_port_0_w },
{ 0x1820, 0x182f, gauntlet_tms_w },
{ 0x1830, 0x183f, MWA_NOP },
{ 0x4000, 0xffff, MWA_ROM },
{ -1 } /* end of table */
};
/*************************************
*
* Port definitions
*
*************************************/
INPUT_PORTS_START( gauntlet_ports )
PORT_START /* IN0 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )
PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_PLAYER1 | IPF_8WAY )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_PLAYER1 | IPF_8WAY )
PORT_START /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_PLAYER2 | IPF_8WAY )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_PLAYER2 | IPF_8WAY )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_PLAYER2 | IPF_8WAY )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_PLAYER2 | IPF_8WAY )
PORT_START /* IN2 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START3 )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER3 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER3 )
PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_PLAYER3 | IPF_8WAY )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_PLAYER3 | IPF_8WAY )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_PLAYER3 | IPF_8WAY )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_PLAYER3 | IPF_8WAY )
PORT_START /* IN3 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START4 )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER4 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER4 )
PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_PLAYER4 | IPF_8WAY )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_PLAYER4 | IPF_8WAY )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_PLAYER4 | IPF_8WAY )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_PLAYER4 | IPF_8WAY )
PORT_START /* IN4 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN4 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN3 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* DSW */
PORT_BIT( 0x07, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BITX( 0x08, 0x08, IPT_DIPSWITCH_NAME | IPF_TOGGLE, "Service Mode", OSD_KEY_F2, IP_JOY_NONE, 0 )
PORT_DIPSETTING( 0x08, "Off")
PORT_DIPSETTING( 0x00, "On")
PORT_BIT( 0x30, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_VBLANK )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_START /* Fake! */
PORT_DIPNAME( 0x03, 0x00, "Player 1 Plays", IP_KEY_NONE )
PORT_DIPSETTING( 0x00, "Red/Warrior" )
PORT_DIPSETTING( 0x01, "Blue/Valkyrie" )
PORT_DIPSETTING( 0x02, "Yellow/Wizard" )
PORT_DIPSETTING( 0x03, "Green/Elf" )
INPUT_PORTS_END
/*************************************
*
* Graphics definitions
*
*************************************/
static struct GfxLayout charlayout =
{
8,8, /* 8*8 chars */
1024, /* 1024 chars */
2, /* 2 bits per pixel */
{ 0, 4 },
{ 0, 1, 2, 3, 8, 9, 10, 11 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
8*16 /* every char takes 16 consecutive bytes */
};
static struct GfxLayout spritelayout =
{
8,8, /* 8*8 sprites */
12288, /* up to 12288 of them */
4, /* 4 bits per pixel */
{ 3*8*0x18000, 2*8*0x18000, 1*8*0x18000, 0*8*0x18000 },
{ 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 /* every sprite takes 8 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ 1, 0x60000, &charlayout, 0, 64 }, /* characters 8x8 */
{ 1, 0x00000, &spritelayout, 256, 32 }, /* sprites & playfield */
{ -1 } /* end of array */
};
/*************************************
*
* Sound definitions
*
*************************************/
static struct POKEYinterface pokey_interface =
{
1, /* 1 chip */
1789790, /* 1.5 MHz??? */
40,
POKEY_DEFAULT_GAIN,
NO_CLIP,
/* The 8 pot handlers */
{ 0 },
{ 0 },
{ 0 },
{ 0 },
{ 0 },
{ 0 },
{ 0 },
{ 0 },
/* The allpot handler */
{ 0 }
};
static struct TMS5220interface tms5220_interface =
{
640000, /* clock speed (80*samplerate) */
100, /* volume */
0 /* irq handler */
};
static struct YM2151interface ym2151_interface =
{
1, /* 1 chip */
3579580, /* seems to be the standard */
{ 60 },
{ 0 }
};
/*************************************
*
* Machine driver
*
*************************************/
static struct MachineDriver gauntlet_machine_driver =
{
/* basic machine hardware */
{
{
CPU_M68000,
7159160,
0,
gauntlet_readmem,gauntlet_writemem,0,0,
gauntlet_interrupt,1
},
{
CPU_M6502,
1789790,
2,
gauntlet_sound_readmem,gauntlet_sound_writemem,0,0,
0,0,
gauntlet_sound_interrupt,250
},
},
60, DEFAULT_REAL_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
10,
gauntlet_init_machine,
/* video hardware */
44*8, 30*8, { 0*8, 44*8-1, 0*8, 30*8-1 },
gfxdecodeinfo,
1024,1024,
0,
VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE | VIDEO_UPDATE_BEFORE_VBLANK,
0,
gauntlet_vh_start,
gauntlet_vh_stop,
gauntlet_vh_screenrefresh,
/* sound hardware */
SOUND_SUPPORTS_STEREO,0,0,0,
{
{
SOUND_YM2151,
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