📄 gyruss.c
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/***************************************************************************
Gyruss memory map (preliminary)
Main processor memory map.
0000-5fff ROM (6000-7fff diagnostics)
8000-83ff Color RAM
8400-87ff Video RAM
9000-a7ff RAM
a000-a17f \ sprites
a200-a27f /
memory mapped ports:
read:
c080 IN0
c0a0 IN1
c0c0 IN2
c0e0 DSW0
c000 DSW1
c100 DSW2
write:
a000-a1ff Odd frame spriteram
a200-a3ff Even frame spriteram
a700 Frame odd or even?
a701 Semaphore system: tells 6809 to draw queued sprites
a702 Semaphore system: tells 6809 to queue sprites
c000 watchdog reset
c080 trigger interrupt on audio CPU
c100 command for the audio CPU
c180 interrupt enable
c185 flip screen
interrupts:
standard NMI at 0x66
SOUND BOARD:
0000-3fff Audio ROM (4000-5fff diagnostics)
6000-63ff Audio RAM
8000 Read Sound Command
I/O:
Gyruss has 5 PSGs:
1) Control: 0x00 Read: 0x01 Write: 0x02
2) Control: 0x04 Read: 0x05 Write: 0x06
3) Control: 0x08 Read: 0x09 Write: 0x0a
4) Control: 0x0c Read: 0x0d Write: 0x0e
5) Control: 0x10 Read: 0x11 Write: 0x12
and 1 SFX channel controlled by an 8039:
1) SoundOn: 0x14 SoundData: 0x18
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
#include "I8039/I8039.h"
/*#define USE_SAMPLES*/
extern unsigned char *gyruss_spritebank,*gyruss_6809_drawplanet,*gyruss_6809_drawship;
void gyruss_queuereg_w(int offset, int data);
void gyruss_flipscreen_w(int offset, int data);
void gyruss_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
void gyruss_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
int gyruss_sh_start(void);
int gyruss_portA_r(int offset);
void gyruss_filter0_w(int offset,int data);
void gyruss_filter1_w(int offset,int data);
void gyruss_sh_irqtrigger_w(int offset,int data);
void gyruss_i8039_irq_w(int offset,int data);
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0x7fff, MRA_ROM },
{ 0x8000, 0x87ff, MRA_RAM },
{ 0x9000, 0x9fff, MRA_RAM },
{ 0xa700, 0xa700, MRA_RAM },
{ 0xa7fc, 0xa7fd, MRA_RAM },
{ 0xc000, 0xc000, input_port_4_r }, /* DSW1 */
{ 0xc080, 0xc080, input_port_0_r }, /* IN0 */
{ 0xc0a0, 0xc0a0, input_port_1_r }, /* IN1 */
{ 0xc0c0, 0xc0c0, input_port_2_r }, /* IN2 */
{ 0xc0e0, 0xc0e0, input_port_3_r }, /* DSW0 */
{ 0xc100, 0xc100, input_port_5_r }, /* DSW2 */
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0x7fff, MWA_ROM }, /* rom space+1 */
{ 0x8000, 0x83ff, colorram_w, &colorram },
{ 0x8400, 0x87ff, videoram_w, &videoram, &videoram_size },
{ 0x9000, 0x9fff, MWA_RAM },
{ 0xa000, 0xa17f, MWA_RAM, &spriteram, &spriteram_size }, /* odd frame spriteram */
{ 0xa200, 0xa37f, MWA_RAM, &spriteram_2 }, /* even frame spriteram */
{ 0xa700, 0xa700, MWA_RAM, &gyruss_spritebank },
{ 0xa701, 0xa701, MWA_NOP }, /* semaphore system */
{ 0xa702, 0xa702, gyruss_queuereg_w }, /* semaphore system */
{ 0xa7fc, 0xa7fc, MWA_RAM, &gyruss_6809_drawplanet },
{ 0xa7fd, 0xa7fd, MWA_RAM, &gyruss_6809_drawship },
{ 0xc000, 0xc000, MWA_NOP }, /* watchdog reset */
{ 0xc080, 0xc080, gyruss_sh_irqtrigger_w },
{ 0xc100, 0xc100, soundlatch_w }, /* command to soundb */
{ 0xc180, 0xc180, interrupt_enable_w }, /* NMI enable */
{ 0xc185, 0xc185, gyruss_flipscreen_w },
{ -1 } /* end of table */
};
static struct MemoryReadAddress sound_readmem[] =
{
{ 0x0000, 0x5fff, MRA_ROM }, /* rom soundboard */
{ 0x6000, 0x63ff, MRA_RAM }, /* ram soundboard */
{ 0x8000, 0x8000, soundlatch_r },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress sound_writemem[] =
{
{ 0x0000, 0x5fff, MWA_ROM }, /* rom soundboard */
{ 0x6000, 0x63ff, MWA_RAM }, /* ram soundboard */
{ -1 } /* end of table */
};
static struct IOReadPort sound_readport[] =
{
{ 0x01, 0x01, AY8910_read_port_0_r },
{ 0x05, 0x05, AY8910_read_port_1_r },
{ 0x09, 0x09, AY8910_read_port_2_r },
{ 0x0d, 0x0d, AY8910_read_port_3_r },
{ 0x11, 0x11, AY8910_read_port_4_r },
{ -1 }
};
static struct IOWritePort sound_writeport[] =
{
{ 0x00, 0x00, AY8910_control_port_0_w },
{ 0x02, 0x02, AY8910_write_port_0_w },
{ 0x04, 0x04, AY8910_control_port_1_w },
{ 0x06, 0x06, AY8910_write_port_1_w },
{ 0x08, 0x08, AY8910_control_port_2_w },
{ 0x0a, 0x0a, AY8910_write_port_2_w },
{ 0x0c, 0x0c, AY8910_control_port_3_w },
{ 0x0e, 0x0e, AY8910_write_port_3_w },
{ 0x10, 0x10, AY8910_control_port_4_w },
{ 0x12, 0x12, AY8910_write_port_4_w },
{ 0x14, 0x14, gyruss_i8039_irq_w },
{ 0x18, 0x18, soundlatch2_w },
{ -1 } /* end of table */
};
#ifndef USE_SAMPLES
static struct MemoryReadAddress i8039_readmem[] =
{
{ 0x0000, 0x0fff, MRA_ROM },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress i8039_writemem[] =
{
{ 0x0000, 0x0fff, MWA_ROM },
{ -1 } /* end of table */
};
static struct IOReadPort i8039_readport[] =
{
{ 0x00, 0xff, soundlatch2_r },
{ -1 }
};
static struct IOWritePort i8039_writeport[] =
{
{ I8039_p1, I8039_p1, DAC_data_w },
{ I8039_p2, I8039_p2, IOWP_NOP },
{ -1 } /* end of table */
};
#endif
INPUT_PORTS_START( gyruss_input_ports )
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_COIN3 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_2WAY )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_2WAY )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_2WAY )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_2WAY )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* 1p shoot 2 - unused */
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* 2p shoot 3 - unused */
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* IN2 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_2WAY | IPF_COCKTAIL )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_2WAY | IPF_COCKTAIL )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_2WAY | IPF_COCKTAIL )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_2WAY | IPF_COCKTAIL )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* 2p shoot 2 - unused */
PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* DSW0 */
PORT_DIPNAME( 0xf0, 0xf0, "Coin B", IP_KEY_NONE )
PORT_DIPSETTING( 0x20, "4 Coins/1 Credit" )
PORT_DIPSETTING( 0x50, "3 Coins/1 Credit" )
PORT_DIPSETTING( 0x80, "2 Coins/1 Credit" )
PORT_DIPSETTING( 0x40, "3 Coins/2 Credits" )
PORT_DIPSETTING( 0x10, "4 Coins/3 Credits" )
PORT_DIPSETTING( 0xf0, "1 Coin/1 Credit" )
PORT_DIPSETTING( 0x30, "3 Coins/4 Credits" )
PORT_DIPSETTING( 0x70, "2 Coins/3 Credits" )
PORT_DIPSETTING( 0xe0, "1 Coin/2 Credits" )
PORT_DIPSETTING( 0x60, "2 Coins/5 Credits" )
PORT_DIPSETTING( 0xd0, "1 Coin/3 Credits" )
PORT_DIPSETTING( 0xc0, "1 Coin/4 Credits" )
PORT_DIPSETTING( 0xb0, "1 Coin/5 Credits" )
PORT_DIPSETTING( 0xa0, "1 Coin/6 Credits" )
PORT_DIPSETTING( 0x90, "1 Coin/7 Credits" )
PORT_DIPSETTING( 0x00, "Free Play" )
PORT_DIPNAME( 0x0f, 0x0f, "Coin A", IP_KEY_NONE )
PORT_DIPSETTING( 0x02, "4 Coins/1 Credit" )
PORT_DIPSETTING( 0x05, "3 Coins/1 Credit" )
PORT_DIPSETTING( 0x08, "2 Coins/1 Credit" )
PORT_DIPSETTING( 0x04, "3 Coins/2 Credits" )
PORT_DIPSETTING( 0x01, "4 Coins/3 Credits" )
PORT_DIPSETTING( 0x0f, "1 Coin/1 Credit" )
PORT_DIPSETTING( 0x03, "3 Coins/4 Credits" )
PORT_DIPSETTING( 0x07, "2 Coins/3 Credits" )
PORT_DIPSETTING( 0x0e, "1 Coin/2 Credits" )
PORT_DIPSETTING( 0x06, "2 Coins/5 Credits" )
PORT_DIPSETTING( 0x0d, "1 Coin/3 Credits" )
PORT_DIPSETTING( 0x0c, "1 Coin/4 Credits" )
PORT_DIPSETTING( 0x0b, "1 Coin/5 Credits" )
PORT_DIPSETTING( 0x0a, "1 Coin/6 Credits" )
PORT_DIPSETTING( 0x09, "1 Coin/7 Credits" )
PORT_DIPSETTING( 0x00, "Free Play" )
PORT_START /* DSW1 */
PORT_DIPNAME( 0x03, 0x03, "Lives", IP_KEY_NONE )
PORT_DIPSETTING( 0x03, "3" )
PORT_DIPSETTING( 0x02, "4" )
PORT_DIPSETTING( 0x01, "5" )
PORT_BITX( 0, 0x00, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "255", IP_KEY_NONE, IP_JOY_NONE, 0 )
PORT_DIPNAME( 0x04, 0x00, "Cabinet", IP_KEY_NONE )
PORT_DIPSETTING( 0x00, "Upright" )
PORT_DIPSETTING( 0x04, "Cocktail" )
PORT_DIPNAME( 0x08, 0x08, "Bonus Life", IP_KEY_NONE )
PORT_DIPSETTING( 0x08, "30000 60000" )
PORT_DIPSETTING( 0x00, "40000 70000" )
PORT_DIPNAME( 0x70, 0x70, "Difficulty", IP_KEY_NONE )
PORT_DIPSETTING( 0x70, "1 (Easiest)" )
PORT_DIPSETTING( 0x60, "2" )
PORT_DIPSETTING( 0x50, "3" )
PORT_DIPSETTING( 0x40, "4" )
PORT_DIPSETTING( 0x30, "5 (Average)" )
PORT_DIPSETTING( 0x20, "6" )
PORT_DIPSETTING( 0x10, "7" )
PORT_DIPSETTING( 0x00, "8 (Hardest)" )
PORT_DIPNAME( 0x80, 0x00, "Demo Sounds", IP_KEY_NONE )
PORT_DIPSETTING( 0x80, "Off" )
PORT_DIPSETTING( 0x00, "On" )
PORT_START /* DSW2 */
PORT_DIPNAME( 0x01, 0x00, "Demo Music", IP_KEY_NONE )
PORT_DIPSETTING( 0x01, "Off" )
PORT_DIPSETTING( 0x00, "On" )
/* other bits probably unused */
INPUT_PORTS_END
/* This is identical to gyruss except for the bonus that has different
values */
INPUT_PORTS_START( gyrussce_input_ports )
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_COIN3 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_2WAY )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_2WAY )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_2WAY )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_2WAY )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* 1p shoot 2 - unused */
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* 2p shoot 3 - unused */
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* IN2 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_2WAY | IPF_COCKTAIL )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_2WAY | IPF_COCKTAIL )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_2WAY | IPF_COCKTAIL )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_2WAY | IPF_COCKTAIL )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* 2p shoot 2 - unused */
PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* DSW0 */
PORT_DIPNAME( 0xf0, 0xf0, "Coin B", IP_KEY_NONE )
PORT_DIPSETTING( 0x20, "4 Coins/1 Credit" )
PORT_DIPSETTING( 0x50, "3 Coins/1 Credit" )
PORT_DIPSETTING( 0x80, "2 Coins/1 Credit" )
PORT_DIPSETTING( 0x40, "3 Coins/2 Credits" )
PORT_DIPSETTING( 0x10, "4 Coins/3 Credits" )
PORT_DIPSETTING( 0xf0, "1 Coin/1 Credit" )
PORT_DIPSETTING( 0x30, "3 Coins/4 Credits" )
PORT_DIPSETTING( 0x70, "2 Coins/3 Credits" )
PORT_DIPSETTING( 0xe0, "1 Coin/2 Credits" )
PORT_DIPSETTING( 0x60, "2 Coins/5 Credits" )
PORT_DIPSETTING( 0xd0, "1 Coin/3 Credits" )
PORT_DIPSETTING( 0xc0, "1 Coin/4 Credits" )
PORT_DIPSETTING( 0xb0, "1 Coin/5 Credits" )
PORT_DIPSETTING( 0xa0, "1 Coin/6 Credits" )
PORT_DIPSETTING( 0x90, "1 Coin/7 Credits" )
PORT_DIPSETTING( 0x00, "Free Play" )
PORT_DIPNAME( 0x0f, 0x0f, "Coin A", IP_KEY_NONE )
PORT_DIPSETTING( 0x02, "4 Coins/1 Credit" )
PORT_DIPSETTING( 0x05, "3 Coins/1 Credit" )
PORT_DIPSETTING( 0x08, "2 Coins/1 Credit" )
PORT_DIPSETTING( 0x04, "3 Coins/2 Credits" )
PORT_DIPSETTING( 0x01, "4 Coins/3 Credits" )
PORT_DIPSETTING( 0x0f, "1 Coin/1 Credit" )
PORT_DIPSETTING( 0x03, "3 Coins/4 Credits" )
PORT_DIPSETTING( 0x07, "2 Coins/3 Credits" )
PORT_DIPSETTING( 0x0e, "1 Coin/2 Credits" )
PORT_DIPSETTING( 0x06, "2 Coins/5 Credits" )
PORT_DIPSETTING( 0x0d, "1 Coin/3 Credits" )
PORT_DIPSETTING( 0x0c, "1 Coin/4 Credits" )
PORT_DIPSETTING( 0x0b, "1 Coin/5 Credits" )
PORT_DIPSETTING( 0x0a, "1 Coin/6 Credits" )
PORT_DIPSETTING( 0x09, "1 Coin/7 Credits" )
PORT_DIPSETTING( 0x00, "Free Play" )
PORT_START /* DSW1 */
PORT_DIPNAME( 0x03, 0x03, "Lives", IP_KEY_NONE )
PORT_DIPSETTING( 0x03, "3" )
PORT_DIPSETTING( 0x02, "4" )
PORT_DIPSETTING( 0x01, "5" )
PORT_BITX( 0, 0x00, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "255", IP_KEY_NONE, IP_JOY_NONE, 0 )
PORT_DIPNAME( 0x04, 0x00, "Cabinet", IP_KEY_NONE )
PORT_DIPSETTING( 0x00, "Upright" )
PORT_DIPSETTING( 0x04, "Cocktail" )
PORT_DIPNAME( 0x08, 0x08, "Bonus Life", IP_KEY_NONE )
PORT_DIPSETTING( 0x08, "50000 70000" )
PORT_DIPSETTING( 0x00, "60000 80000" )
PORT_DIPNAME( 0x70, 0x70, "Difficulty", IP_KEY_NONE )
PORT_DIPSETTING( 0x70, "1 (Easiest)" )
PORT_DIPSETTING( 0x60, "2" )
PORT_DIPSETTING( 0x50, "3" )
PORT_DIPSETTING( 0x40, "4" )
PORT_DIPSETTING( 0x30, "5 (Average)" )
PORT_DIPSETTING( 0x20, "6" )
PORT_DIPSETTING( 0x10, "7" )
PORT_DIPSETTING( 0x00, "8 (Hardest)" )
PORT_DIPNAME( 0x80, 0x00, "Demo Sounds", IP_KEY_NONE )
PORT_DIPSETTING( 0x80, "Off" )
PORT_DIPSETTING( 0x00, "On" )
PORT_START /* DSW2 */
PORT_DIPNAME( 0x01, 0x00, "Demo Music", IP_KEY_NONE )
PORT_DIPSETTING( 0x01, "Off" )
PORT_DIPSETTING( 0x00, "On" )
/* other bits probably unused */
INPUT_PORTS_END
static struct GfxLayout charlayout =
{
8,8, /* 8*8 characters */
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