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suprloco.c
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C/C++ Source or Header
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2000-05-04
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10KB
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332 lines
/******************************************************************************
Super Locomotive
driver by Zsolt Vasvari
TODO:
Bit 4 in suprloco_control_w is pulsed when loco turns "super"
******************************************************************************/
#include "driver.h"
#include "vidhrdw/system1.h"
#include "cpu/z80/z80.h"
extern unsigned char *spriteram;
extern size_t spriteram_size;
extern unsigned char *suprloco_videoram;
void suprloco_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
int suprloco_vh_start(void);
void suprloco_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
WRITE_HANDLER( suprloco_videoram_w );
WRITE_HANDLER( suprloco_scrollram_w );
READ_HANDLER( suprloco_scrollram_r );
WRITE_HANDLER( suprloco_control_w );
READ_HANDLER( suprloco_control_r );
/* in machine/segacrpt.c */
void suprloco_decode(void);
static WRITE_HANDLER( suprloco_soundport_w )
{
soundlatch_w(0,data);
cpu_cause_interrupt(1,Z80_NMI_INT);
/* spin for a while to let the Z80 read the command (fixes hanging sound in Regulus) */
cpu_spinuntil_time(TIME_IN_USEC(50));
}
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0xbfff, MRA_ROM },
{ 0xc000, 0xc1ff, MRA_RAM },
{ 0xc800, 0xc800, input_port_0_r },
{ 0xd000, 0xd000, input_port_1_r },
{ 0xd800, 0xd800, input_port_2_r },
{ 0xe000, 0xe000, input_port_3_r },
{ 0xe001, 0xe001, input_port_4_r },
{ 0xe801, 0xe801, suprloco_control_r },
{ 0xf000, 0xf6ff, MRA_RAM },
{ 0xf7e0, 0xf7ff, suprloco_scrollram_r },
{ 0xf800, 0xffff, MRA_RAM },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0xbfff, MWA_ROM },
{ 0xc000, 0xc1ff, MWA_RAM, &spriteram, &spriteram_size },
{ 0xe800, 0xe800, suprloco_soundport_w },
{ 0xe801, 0xe801, suprloco_control_w },
{ 0xf000, 0xf6ff, suprloco_videoram_w, &suprloco_videoram },
{ 0xf7e0, 0xf7ff, suprloco_scrollram_w },
{ 0xf800, 0xffff, MWA_RAM },
{ -1 } /* end of table */
};
static struct MemoryReadAddress sound_readmem[] =
{
{ 0x0000, 0x7fff, MRA_ROM },
{ 0x8000, 0x87ff, MRA_RAM },
{ 0xe000, 0xe000, soundlatch_r },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress sound_writemem[] =
{
{ 0x0000, 0x7fff, MWA_ROM },
{ 0x8000, 0x87ff, MWA_RAM },
{ 0xa000, 0xa003, SN76496_0_w },
{ 0xc000, 0xc003, SN76496_1_w },
{ -1 } /* end of table */
};
static struct IOWritePort writeport[] =
{
{ Z80_HALT_PORT, Z80_HALT_PORT+1, MWA_NOP }, /* HALT ports */
{ -1 } /* end of table */
};
INPUT_PORTS_START( suprloco )
PORT_START /* IN0 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BITX(0x04, IP_ACTIVE_LOW, IPT_SERVICE, DEF_STR( Service_Mode ), KEYCODE_F2, IP_JOY_NONE )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN3 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* IN1 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | 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( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* IN2 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_COCKTAIL )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | 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_BUTTON2 | IPF_COCKTAIL )
PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* DSW1 */
PORT_DIPNAME( 0x07, 0x00, DEF_STR( Coin_A ) )
PORT_DIPSETTING( 0x07, DEF_STR( 5C_1C ) )
PORT_DIPSETTING( 0x06, DEF_STR( 4C_1C ) )
PORT_DIPSETTING( 0x05, DEF_STR( 3C_1C ) )
PORT_DIPSETTING( 0x04, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x01, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x02, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x03, DEF_STR( 1C_6C ) )
PORT_DIPNAME( 0x38, 0x00, DEF_STR( Coin_B ) )
PORT_DIPSETTING( 0x38, DEF_STR( 5C_1C ) )
PORT_DIPSETTING( 0x30, DEF_STR( 4C_1C ) )
PORT_DIPSETTING( 0x28, DEF_STR( 3C_1C ) )
PORT_DIPSETTING( 0x20, DEF_STR( 2C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x08, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x10, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x18, DEF_STR( 1C_6C ) )
PORT_DIPNAME( 0xc0, 0x40, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x00, "2" )
PORT_DIPSETTING( 0x40, "3" )
PORT_DIPSETTING( 0x80, "4" )
PORT_DIPSETTING( 0xc0, "5" )
PORT_START /* DSW2 */
PORT_DIPNAME( 0x03, 0x00, DEF_STR( Bonus_Life ) )
PORT_DIPSETTING( 0x00, "20000" )
PORT_DIPSETTING( 0x01, "30000" )
PORT_DIPSETTING( 0x02, "40000" )
PORT_DIPSETTING( 0x03, "50000" )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unused ) )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Free_Play ) )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Difficulty ) )
PORT_DIPSETTING( 0x10, "Easy" )
PORT_DIPSETTING( 0x00, "Hard" )
PORT_BITX( 0x20, 0x20, IPT_DIPSWITCH_NAME | IPF_CHEAT, "Infinite Lives", IP_KEY_NONE, IP_JOY_NONE )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, "Initial Entry" )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x40, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x80, DEF_STR( Cocktail ) )
INPUT_PORTS_END
static struct GfxLayout charlayout =
{
8,8, /* 8 by 8 */
1024, /* 1024 characters */
4, /* 4 bits per pixel */
{ 0, 1024*8*8, 2*1024*8*8, 3*1024*8*8 }, /* plane */
{ 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
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
/* sprites use colors 0-255 */
{ REGION_GFX1, 0x6000, &charlayout, 256, 16 },
{ -1 } /* end of array */
};
static struct SN76496interface sn76496_interface =
{
2, /* 2 chips */
{ 2000000, 4000000 }, /* 8 MHz / 4 ?*/
{ 100, 100 }
};
static struct MachineDriver machine_driver_suprloco =
{
/* basic machine hardware */
{
{
CPU_Z80,
4000000, /* 4 MHz (?) */
readmem,writemem,0,writeport,
interrupt,1
},
{
CPU_Z80 | CPU_AUDIO_CPU,
4000000,
sound_readmem,sound_writemem,0,0,
interrupt,4 /* NMIs are caused by the main CPU */
},
},
60, 5000, /* frames per second, vblank duration */
1, /* single CPU, no need for interleaving */
0,
/* video hardware */
32*8, 32*8, /* screen_width, screen_height */
{ 1*8, 31*8-1, 0*8, 28*8-1 }, /* struct rectangle visible_area */
gfxdecodeinfo, /* GfxDecodeInfo */
512, /* total colors */
512, /* color table length */
suprloco_vh_convert_color_prom, /* convert color prom routine */
VIDEO_TYPE_RASTER,
0, /* vh_init routine */
suprloco_vh_start, /* vh_start routine */
0, /* vh_stop routine */
suprloco_vh_screenrefresh, /* vh_update routine */
/* sound hardware */
0,0,0,0,
{
{
SOUND_SN76496,
&sn76496_interface
}
}
};
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( suprloco )
ROM_REGION( 2*0x10000, REGION_CPU1 ) /* 64k for code + 64k for decrypted opcodes */
ROM_LOAD( "ic37.bin", 0x0000, 0x4000, 0x57f514dd ) /* encrypted */
ROM_LOAD( "ic15.bin", 0x4000, 0x4000, 0x5a1d2fb0 ) /* encrypted */
ROM_LOAD( "ic28.bin", 0x8000, 0x4000, 0xa597828a )
ROM_REGION( 0x10000, REGION_CPU2 ) /* 64k for sound cpu */
ROM_LOAD( "ic64.bin", 0x0000, 0x2000, 0x0aa57207 )
ROM_REGION( 0xe000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "ic63.bin", 0x0000, 0x2000, 0xe571fe81 )
ROM_LOAD( "ic62.bin", 0x2000, 0x2000, 0x6130f93c )
ROM_LOAD( "ic61.bin", 0x4000, 0x2000, 0x3b03004e )
/*0x6000- 0xe000 will be created by init_suprloco */
ROM_REGION( 0x8000, REGION_GFX2 ) /* 32k for sprites data used at runtime */
ROM_LOAD( "ic55.bin", 0x0000, 0x4000, 0xee2d3ed3 )
ROM_LOAD( "ic56.bin", 0x4000, 0x2000, 0xf04a4b50 )
/*0x6000 empty */
ROM_REGION( 0x0620, REGION_PROMS )
ROM_LOAD( "ic100.bin", 0x0000, 0x0080, 0x7b0c8ce5 ) /* color PROM */
ROM_CONTINUE( 0x0100, 0x0080 )
ROM_CONTINUE( 0x0080, 0x0080 )
ROM_CONTINUE( 0x0180, 0x0080 )
ROM_LOAD( "ic89.bin", 0x0200, 0x0400, 0x1d4b02cb ) /* 3bpp to 4bpp table */
ROM_LOAD( "ic7.bin", 0x0600, 0x0020, 0x89ba674f ) /* unknown */
ROM_END
void init_suprloco(void)
{
/* convert graphics to 4bpp from 3bpp */
int i, j, k, color_source, color_dest;
unsigned char *source, *dest, *lookup;
source = memory_region(REGION_GFX1);
dest = source + 0x6000;
lookup = memory_region(REGION_PROMS) + 0x0200;
for (i = 0; i < 0x80; i++, lookup += 8)
{
for (j = 0; j < 0x40; j++, source++, dest++)
{
dest[0] = dest[0x2000] = dest[0x4000] = dest[0x6000] = 0;
for (k = 0; k < 8; k++)
{
color_source = (((source[0x0000] >> k) & 0x01) << 2) |
(((source[0x2000] >> k) & 0x01) << 1) |
(((source[0x4000] >> k) & 0x01) << 0);
color_dest = lookup[color_source];
dest[0x0000] |= (((color_dest >> 3) & 0x01) << k);
dest[0x2000] |= (((color_dest >> 2) & 0x01) << k);
dest[0x4000] |= (((color_dest >> 1) & 0x01) << k);
dest[0x6000] |= (((color_dest >> 0) & 0x01) << k);
}
}
}
/* decrypt program ROMs */
suprloco_decode();
}
GAME( 1982, suprloco, 0, suprloco, suprloco, suprloco, ROT0, "Sega", "Super Locomotive" )