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AmigActive 10
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megazone.c
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C/C++ Source or Header
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2000-05-04
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16KB
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490 lines
/**************************************************************************
Based on drivers from Juno First emulator by Chris Hardy (chris@junofirst.freeserve.co.uk)
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
#include "cpu/m6809/m6809.h"
#include "cpu/i8039/i8039.h"
#include "cpu/z80/z80.h"
void konami1_decode(void);
extern unsigned char *megazone_scrollx;
extern unsigned char *megazone_scrolly;
static unsigned char *megazone_sharedram;
extern unsigned char *megazone_videoram2;
extern unsigned char *megazone_colorram2;
extern size_t megazone_videoram2_size;
static int i8039_irqenable;
static int i8039_status;
int megazone_vh_start(void);
void megazone_vh_stop(void);
WRITE_HANDLER( megazone_flipscreen_w );
void megazone_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
WRITE_HANDLER( megazone_sprite_bank_select_w );
void megazone_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
READ_HANDLER( megazone_portA_r )
{
int clock,timer;
/* main xtal 14.318MHz, divided by 8 to get the AY-3-8910 clock, further */
/* divided by 1024 to get this timer */
/* The base clock for the CPU and 8910 is NOT the same, so we have to */
/* compensate. */
/* (divide by (1024/2), and not 1024, because the CPU cycle counter is */
/* incremented every other state change of the clock) */
clock = cpu_gettotalcycles() * 7159/12288; /* = (14318/8)/(18432/6) */
timer = (clock / (1024/2)) & 0x0f;
/* low three bits come from the 8039 */
return (timer << 4) | i8039_status;
}
static WRITE_HANDLER( megazone_portB_w )
{
int i;
for (i = 0;i < 3;i++)
{
int C;
C = 0;
if (data & 1) C += 10000; /* 10000pF = 0.01uF */
if (data & 2) C += 220000; /* 220000pF = 0.22uF */
data >>= 2;
set_RC_filter(i,1000,2200,200,C);
}
}
WRITE_HANDLER( megazone_videoram2_w )
{
if (megazone_videoram2[offset] != data)
{
megazone_videoram2[offset] = data;
}
}
WRITE_HANDLER( megazone_colorram2_w )
{
if (megazone_colorram2[offset] != data)
{
megazone_colorram2[offset] = data;
}
}
READ_HANDLER( megazone_dip3_r )
{
return(0xff);
}
READ_HANDLER( megazone_sharedram_r )
{
return(megazone_sharedram[offset]);
}
WRITE_HANDLER( megazone_sharedram_w )
{
megazone_sharedram[offset] = data;
}
static WRITE_HANDLER( megazone_i8039_irq_w )
{
if (i8039_irqenable)
cpu_cause_interrupt(2,I8039_EXT_INT);
}
WRITE_HANDLER( i8039_irqen_and_status_w )
{
i8039_irqenable = data & 0x80;
i8039_status = (data & 0x70) >> 4;
}
static struct MemoryReadAddress readmem[] =
{
{ 0x2000, 0x2fff, MRA_RAM },
{ 0x3000, 0x33ff, MRA_RAM },
{ 0x3800, 0x3fff, megazone_sharedram_r },
{ 0x4000, 0xffff, MRA_ROM }, /* 4000->5FFF is a debug rom */
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0007, 0x0007, interrupt_enable_w },
{ 0x0800, 0x0800, watchdog_reset_w },
{ 0x1800, 0x1800, MWA_RAM, &megazone_scrollx },
{ 0x1000, 0x1000, MWA_RAM, &megazone_scrolly },
{ 0x2000, 0x23ff, videoram_w, &videoram, &videoram_size },
{ 0x2400, 0x27ff, megazone_videoram2_w, &megazone_videoram2, &megazone_videoram2_size },
{ 0x2800, 0x2bff, colorram_w, &colorram },
{ 0x2c00, 0x2fff, megazone_colorram2_w, &megazone_colorram2 },
{ 0x3000, 0x33ff, MWA_RAM, &spriteram, &spriteram_size },
{ 0x3800, 0x3fff, megazone_sharedram_w, &megazone_sharedram },
{ 0x4000, 0xffff, MWA_ROM },
{ -1 } /* end of table */
};
static struct MemoryReadAddress sound_readmem[] =
{
{ 0x0000, 0x1fff, MRA_ROM },
{ 0x6000, 0x6000, input_port_0_r }, /* IO Coin */
{ 0x6001, 0x6001, input_port_1_r }, /* P1 IO */
{ 0x6002, 0x6002, input_port_2_r }, /* P2 IO */
{ 0x6003, 0x6003, input_port_3_r }, /* DIP 1 */
{ 0x8000, 0x8000, input_port_4_r }, /* DIP 2 */
{ 0x8001, 0x8001, megazone_dip3_r }, /* DIP 3 - Not used */
{ 0xe000, 0xe7ff, megazone_sharedram_r }, /* Shared with $3800->3fff of main CPU */
{ -1 } /* end of table */
};
static struct MemoryWriteAddress sound_writemem[] =
{
{ 0x0000, 0x1fff, MWA_ROM },
{ 0x2000, 0x2000, megazone_i8039_irq_w }, /* START line. Interrupts 8039 */
{ 0x4000, 0x4000, soundlatch_w }, /* CODE line. Command Interrupts 8039 */
{ 0xa000, 0xa000, MWA_RAM }, /* INTMAIN - Interrupts main CPU (unused) */
{ 0xc000, 0xc000, MWA_RAM }, /* INT (Actually is NMI) enable/disable (unused)*/
{ 0xc001, 0xc001, watchdog_reset_w },
{ 0xe000, 0xe7ff, megazone_sharedram_w }, /* Shared with $3800->3fff of main CPU */
{ -1 } /* end of table */
};
static struct IOReadPort sound_readport[] =
{
{ 0x00, 0x02, AY8910_read_port_0_r },
{ -1 }
};
static struct IOWritePort sound_writeport[] =
{
{ 0x00, 0x00, AY8910_control_port_0_w },
{ 0x02, 0x02, AY8910_write_port_0_w },
{ -1 } /* end of table */
};
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, soundlatch_r },
{ 0x111,0x111, IORP_NOP },
{ -1 }
};
static struct IOWritePort i8039_writeport[] =
{
{ I8039_p1, I8039_p1, DAC_0_data_w },
{ I8039_p2, I8039_p2, i8039_irqen_and_status_w },
{ -1 } /* end of table */
};
INPUT_PORTS_START( megazone )
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( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* IN2 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_COCKTAIL )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_COCKTAIL )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_COCKTAIL)
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_COCKTAIL)
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START /* DSW1 */
PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coin_A ) )
PORT_DIPSETTING( 0x02, DEF_STR( 4C_1C ) )
PORT_DIPSETTING( 0x05, DEF_STR( 3C_1C ) )
PORT_DIPSETTING( 0x08, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x04, DEF_STR( 3C_2C ) )
PORT_DIPSETTING( 0x01, DEF_STR( 4C_3C ) )
PORT_DIPSETTING( 0x0f, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x03, DEF_STR( 3C_4C ) )
PORT_DIPSETTING( 0x07, DEF_STR( 2C_3C ) )
PORT_DIPSETTING( 0x0e, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x06, DEF_STR( 2C_5C ) )
PORT_DIPSETTING( 0x0d, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x0c, DEF_STR( 1C_4C ) )
PORT_DIPSETTING( 0x0b, DEF_STR( 1C_5C ) )
PORT_DIPSETTING( 0x0a, DEF_STR( 1C_6C ) )
PORT_DIPSETTING( 0x09, DEF_STR( 1C_7C ) )
PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
PORT_DIPNAME( 0xf0, 0xf0, DEF_STR( Coin_B ) )
PORT_DIPSETTING( 0x20, DEF_STR( 4C_1C ) )
PORT_DIPSETTING( 0x50, DEF_STR( 3C_1C ) )
PORT_DIPSETTING( 0x80, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x40, DEF_STR( 3C_2C ) )
PORT_DIPSETTING( 0x10, DEF_STR( 4C_3C ) )
PORT_DIPSETTING( 0xf0, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x30, DEF_STR( 3C_4C ) )
PORT_DIPSETTING( 0x70, DEF_STR( 2C_3C ) )
PORT_DIPSETTING( 0xe0, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x60, DEF_STR( 2C_5C ) )
PORT_DIPSETTING( 0xd0, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0xc0, DEF_STR( 1C_4C ) )
PORT_DIPSETTING( 0xb0, DEF_STR( 1C_5C ) )
PORT_DIPSETTING( 0xa0, DEF_STR( 1C_6C ) )
PORT_DIPSETTING( 0x90, DEF_STR( 1C_7C ) )
PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
PORT_START /* DSW2 */
PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x03, "3" )
PORT_DIPSETTING( 0x02, "4" )
PORT_DIPSETTING( 0x01, "5" )
PORT_BITX(0, 0x00, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "Infinite", IP_KEY_NONE, IP_JOY_NONE )
PORT_DIPNAME( 0x04, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x04, DEF_STR( Cocktail ) )
PORT_DIPNAME( 0x18, 0x18, DEF_STR( Bonus_Life ) )
PORT_DIPSETTING( 0x18, "20k 70k" )
PORT_DIPSETTING( 0x10, "20k 80k" )
PORT_DIPSETTING( 0x08, "30k 90k" )
PORT_DIPSETTING( 0x00, "30k 100k" )
PORT_DIPNAME( 0x60, 0x40, DEF_STR( Difficulty ) )
PORT_DIPSETTING( 0x60, "Easy" )
PORT_DIPSETTING( 0x40, "Normal" )
PORT_DIPSETTING( 0x20, "Difficult" )
PORT_DIPSETTING( 0x00, "Very Difficult" )
PORT_DIPNAME( 0x80, 0x80, DEF_STR( Demo_Sounds ) )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
INPUT_PORTS_END
static struct GfxLayout charlayout =
{
8,8, /* 8*8 characters */
512, /* 512 characters */
4, /* 4 bits per pixel */
{ 0, 1, 2, 3 }, /* the four bitplanes are packed in one nibble */
{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 },
{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
32*8 /* every char takes 8 consecutive bytes */
};
static struct GfxLayout spritelayout =
{
16,16, /* 16*16 sprites */
256, /* 256 sprites */
4, /* 4 bits per pixel */
{ 0x4000*8+4, 0x4000*8+0, 4, 0 },
{ 0, 1, 2, 3, 8*8+0, 8*8+1, 8*8+2, 8*8+3,
16*8+0, 16*8+1, 16*8+2, 16*8+3, 24*8+0, 24*8+1, 24*8+2, 24*8+3 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 ,
32*8, 33*8, 34*8, 35*8, 36*8, 37*8, 38*8, 39*8, },
64*8 /* every sprite takes 64 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ REGION_GFX1, 0, &charlayout, 0, 16 },
{ REGION_GFX2, 0, &spritelayout, 16*16, 16 },
{ -1 } /* end of array */
};
static struct AY8910interface ay8910_interface =
{
1, /* 1 chip */
14318000/8, /* 1.78975 MHz */
{ 30 },
{ megazone_portA_r },
{ 0 },
{ 0 },
{ megazone_portB_w }
};
static struct DACinterface dac_interface =
{
1,
{ 50 }
};
static struct MachineDriver machine_driver_megazone =
{
/* basic machine hardware */
{
{
CPU_M6809,
2048000, /* 2 Mhz */
readmem,writemem,0,0,
interrupt,1
},
{
CPU_Z80,
18432000/6, /* Z80 Clock is derived from the H1 signal */
sound_readmem,sound_writemem,sound_readport,sound_writeport,
interrupt,1
},
{
CPU_I8039 | CPU_AUDIO_CPU,
14318000/2/15, /* 1/2 14MHz crystal */
i8039_readmem,i8039_writemem,i8039_readport,i8039_writeport,
ignore_interrupt,1
}
},
60, DEFAULT_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
15, /* 1 CPU slice per frame - interleaving is forced when a sound command is written */
0,
/* video hardware */
36*8, 32*8, { 0*8, 36*8-1, 2*8, 30*8-1 },
gfxdecodeinfo,
32,16*16+16*16,
megazone_vh_convert_color_prom,
VIDEO_TYPE_RASTER,
0,
megazone_vh_start,
megazone_vh_stop,
megazone_vh_screenrefresh,
/* sound hardware */
0,0,0,0,
{
{
SOUND_AY8910,
&ay8910_interface
},
{
SOUND_DAC,
&dac_interface
}
}
};
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( megazone )
ROM_REGION( 2*0x10000, REGION_CPU1 ) /* 64k for code + 64k for decrypted opcodes */
ROM_LOAD( "319i07.bin", 0x6000, 0x2000, 0x94b22ea8 )
ROM_LOAD( "319i06.bin", 0x8000, 0x2000, 0x0468b619 )
ROM_LOAD( "319i05.bin", 0xa000, 0x2000, 0xac59000c )
ROM_LOAD( "319i04.bin", 0xc000, 0x2000, 0x1e968603 )
ROM_LOAD( "319i03.bin", 0xe000, 0x2000, 0x0888b803 )
ROM_REGION( 0x10000, REGION_CPU2 ) /* 64k for the audio CPU */
ROM_LOAD( "319e02.bin", 0x0000, 0x2000, 0xd5d45edb )
ROM_REGION( 0x1000, REGION_CPU3 ) /* 4k for the 8039 DAC CPU */
ROM_LOAD( "319e01.bin", 0x0000, 0x1000, 0xed5725a0 )
ROM_REGION( 0x04000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "319e12.bin", 0x0000, 0x2000, 0xe0fb7835 )
ROM_LOAD( "319e13.bin", 0x2000, 0x2000, 0x3d8f3743 )
ROM_REGION( 0x08000, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "319e11.bin", 0x0000, 0x2000, 0xf36f19c5 )
ROM_LOAD( "319e09.bin", 0x2000, 0x2000, 0x5eaa7f3e )
ROM_LOAD( "319e10.bin", 0x4000, 0x2000, 0x7bb1aeee )
ROM_LOAD( "319e08.bin", 0x6000, 0x2000, 0x6add71b1 )
ROM_REGION( 0x0260, REGION_PROMS )
ROM_LOAD( "319b18.a16", 0x0000, 0x020, 0x23cb02af ) /* palette */
ROM_LOAD( "319b16.c6", 0x0020, 0x100, 0x5748e933 ) /* sprite lookup table */
ROM_LOAD( "319b17.a11", 0x0120, 0x100, 0x1fbfce73 ) /* character lookup table */
ROM_LOAD( "319b14.e7", 0x0220, 0x020, 0x55044268 ) /* timing (not used) */
ROM_LOAD( "319b15.e8", 0x0240, 0x020, 0x31fd7ab9 ) /* timing (not used) */
ROM_END
ROM_START( megaznik )
ROM_REGION( 2*0x10000, REGION_CPU1 ) /* 64k for code + 64k for decrypted opcodes */
ROM_LOAD( "ic59_cpu.bin", 0x6000, 0x2000, 0xf41922a0 )
ROM_LOAD( "ic58_cpu.bin", 0x8000, 0x2000, 0x7fd7277b )
ROM_LOAD( "ic57_cpu.bin", 0xa000, 0x2000, 0xa4b33b51 )
ROM_LOAD( "ic56_cpu.bin", 0xc000, 0x2000, 0x2aabcfbf )
ROM_LOAD( "ic55_cpu.bin", 0xe000, 0x2000, 0xb33a3c37 )
ROM_REGION( 0x10000, REGION_CPU2 ) /* 64k for the audio CPU */
ROM_LOAD( "319e02.bin", 0x0000, 0x2000, 0xd5d45edb )
ROM_REGION( 0x1000, REGION_CPU3 ) /* 4k for the 8039 DAC CPU */
ROM_LOAD( "319e01.bin", 0x0000, 0x1000, 0xed5725a0 )
ROM_REGION( 0x04000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "ic40_vid.bin", 0x0000, 0x2000, 0x07b8b24b )
ROM_LOAD( "319e13.bin", 0x2000, 0x2000, 0x3d8f3743 )
ROM_REGION( 0x08000, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "ic15_vid.bin", 0x0000, 0x2000, 0x965a7ff6 )
ROM_LOAD( "319e09.bin", 0x2000, 0x2000, 0x5eaa7f3e )
ROM_LOAD( "319e10.bin", 0x4000, 0x2000, 0x7bb1aeee )
ROM_LOAD( "319e08.bin", 0x6000, 0x2000, 0x6add71b1 )
ROM_REGION( 0x0260, REGION_PROMS )
ROM_LOAD( "319b18.a16", 0x0000, 0x020, 0x23cb02af ) /* palette */
ROM_LOAD( "319b16.c6", 0x0020, 0x100, 0x5748e933 ) /* sprite lookup table */
ROM_LOAD( "319b17.a11", 0x0120, 0x100, 0x1fbfce73 ) /* character lookup table */
ROM_LOAD( "319b14.e7", 0x0220, 0x020, 0x55044268 ) /* timing (not used) */
ROM_LOAD( "319b15.e8", 0x0240, 0x020, 0x31fd7ab9 ) /* timing (not used) */
ROM_END
static void init_megazone(void)
{
konami1_decode();
}
GAME( 1983, megazone, 0, megazone, megazone, megazone, ROT90, "Konami", "Mega Zone" )
GAME( 1983, megaznik, megazone, megazone, megazone, megazone, ROT90, "Konami / Interlogic + Kosuka", "Mega Zone (Kosuka)" )