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cbasebal.c
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C/C++ Source or Header
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2000-04-23
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10KB
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366 lines
/***************************************************************************
Capcom Baseball
Somewhat similar to the "Mitchell hardware", but different enough to
deserve its own driver.
TODO:
- understand what bit 6 of input port 0x12 is
- unknown bit 5 of bankswitch register
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
#include "machine/eeprom.h"
/* in machine/kabuki.c */
void pang_decode(void);
int cbasebal_vh_start(void);
void cbasebal_vh_stop(void);
WRITE_HANDLER( cbasebal_textram_w );
READ_HANDLER( cbasebal_textram_r );
WRITE_HANDLER( cbasebal_scrollram_w );
READ_HANDLER( cbasebal_scrollram_r );
WRITE_HANDLER( cbasebal_gfxctrl_w );
WRITE_HANDLER( cbasebal_scrollx_w );
WRITE_HANDLER( cbasebal_scrolly_w );
void cbasebal_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
static int rambank;
static WRITE_HANDLER( cbasebal_bankswitch_w )
{
int bankaddress;
unsigned char *RAM = memory_region(REGION_CPU1);
/* bits 0-4 select ROM bank */
//logerror("%04x: bankswitch %02x\n",cpu_get_pc(),data);
bankaddress = 0x10000 + (data & 0x1f) * 0x4000;
cpu_setbank(1,&RAM[bankaddress]);
/* bit 5 used but unknown */
/* bits 6-7 select RAM bank */
rambank = (data & 0xc0) >> 6;
}
static READ_HANDLER( bankedram_r )
{
if (rambank == 2)
return cbasebal_textram_r(offset); /* VRAM */
else if (rambank == 1)
{
if (offset < 0x800)
return paletteram_r(offset);
else return 0;
}
else
{
return cbasebal_scrollram_r(offset); /* SCROLL */
}
}
static WRITE_HANDLER( bankedram_w )
{
if (rambank == 2)
cbasebal_textram_w(offset,data);
else if (rambank == 1)
{
if (offset < 0x800)
paletteram_xxxxBBBBRRRRGGGG_w(offset,data);
}
else
cbasebal_scrollram_w(offset,data);
}
static WRITE_HANDLER( cbasebal_coinctrl_w )
{
coin_lockout_w(0,~data & 0x04);
coin_lockout_w(1,~data & 0x08);
coin_counter_w(0,data & 0x01);
coin_counter_w(1,data & 0x02);
}
/***************************************************************************
EEPROM
***************************************************************************/
static struct EEPROM_interface eeprom_interface =
{
6, /* address bits */
16, /* data bits */
"0110", /* read command */
"0101", /* write command */
"0111" /* erase command */
};
static void nvram_handler(void *file,int read_or_write)
{
if (read_or_write)
EEPROM_save(file);
else
{
EEPROM_init(&eeprom_interface);
if (file)
EEPROM_load(file);
}
}
static READ_HANDLER( eeprom_r )
{
int bit;
bit = EEPROM_read_bit() << 7;
return (input_port_2_r(0) & 0x7f) | bit;
}
static WRITE_HANDLER( eeprom_cs_w )
{
EEPROM_set_cs_line(data ? CLEAR_LINE : ASSERT_LINE);
}
static WRITE_HANDLER( eeprom_clock_w )
{
EEPROM_set_clock_line(data ? CLEAR_LINE : ASSERT_LINE);
}
static WRITE_HANDLER( eeprom_serial_w )
{
EEPROM_write_bit(data);
}
static struct MemoryReadAddress cbasebal_readmem[] =
{
{ 0x0000, 0x7fff, MRA_ROM },
{ 0x8000, 0xbfff, MRA_BANK1 },
{ 0xc000, 0xcfff, bankedram_r },
{ 0xe000, 0xffff, MRA_RAM },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress cbasebal_writemem[] =
{
{ 0x0000, 0xbfff, MWA_ROM },
{ 0xc000, 0xcfff, bankedram_w, &paletteram }, /* palette + vram + scrollram */
{ 0xe000, 0xfdff, MWA_RAM }, /* work RAM */
{ 0xfe00, 0xffff, MWA_RAM, &spriteram, &spriteram_size },
{ -1 } /* end of table */
};
static struct IOReadPort cbasebal_readport[] =
{
{ 0x10, 0x10, input_port_0_r },
{ 0x11, 0x11, input_port_1_r },
{ 0x12, 0x12, eeprom_r },
{ -1 } /* end of table */
};
static struct IOWritePort cbasebal_writeport[] =
{
{ 0x00, 0x00, cbasebal_bankswitch_w },
{ 0x01, 0x01, eeprom_cs_w },
{ 0x02, 0x02, eeprom_clock_w },
{ 0x03, 0x03, eeprom_serial_w },
{ 0x05, 0x05, OKIM6295_data_0_w },
{ 0x06, 0x06, YM2413_register_port_0_w },
{ 0x07, 0x07, YM2413_data_port_0_w },
{ 0x08, 0x09, cbasebal_scrollx_w },
{ 0x0a, 0x0b, cbasebal_scrolly_w },
{ 0x13, 0x13, cbasebal_gfxctrl_w },
{ 0x14, 0x14, cbasebal_coinctrl_w },
{ -1 } /* end of table */
};
INPUT_PORTS_START( cbasebal )
PORT_START
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON3 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
PORT_START /* IN2 */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER2 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_PLAYER2 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_PLAYER2 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_PLAYER2 )
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_SERVICE( 0x08, IP_ACTIVE_LOW )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_VBLANK ) /* ? */
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN ) /* EEPROM data */
INPUT_PORTS_END
static struct GfxLayout cbasebal_textlayout =
{
8,8, /* 8*8 characters */
4096, /* 4096 characters */
2, /* 2 bits per pixel */
{ 0, 4 },
{ 8+3, 8+2, 8+1, 8+0, 3, 2, 1, 0 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
16*8 /* every char takes 16 consecutive bytes */
};
static struct GfxLayout cbasebal_tilelayout =
{
16,16, /* 16*16 tiles */
4096, /* 4096 tiles */
4, /* 4 bits per pixel */
{ 4096*64*8+4, 4096*64*8+0,4, 0 },
{ 0, 1, 2, 3, 8+0, 8+1, 8+2, 8+3,
16*16+0, 16*16+1, 16*16+2, 16*16+3, 16*16+8+0, 16*16+8+1, 16*16+8+2, 16*16+8+3 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,
8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16 },
64*8 /* every tile takes 64 consecutive bytes */
};
static struct GfxLayout cbasebal_spritelayout =
{
16,16, /* 16*16 sprites */
4096, /* 2048 sprites */
4, /* 4 bits per pixel */
{ 4096*64*8+4, 4096*64*8+0, 4, 0 },
{ 0, 1, 2, 3, 8+0, 8+1, 8+2, 8+3,
32*8+0, 32*8+1, 32*8+2, 32*8+3, 33*8+0, 33*8+1, 33*8+2, 33*8+3 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,
8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16 },
64*8 /* every sprite takes 64 consecutive bytes */
};
static struct GfxDecodeInfo cbasebal_gfxdecodeinfo[] =
{
{ REGION_GFX1, 0, &cbasebal_textlayout, 256, 8 }, /* colors 256- 287 */
{ REGION_GFX2, 0, &cbasebal_tilelayout, 768, 16 }, /* colors 768-1023 */
{ REGION_GFX3, 0, &cbasebal_spritelayout, 512, 8 }, /* colors 512- 639 */
{ -1 } /* end of array */
};
static struct YM2413interface ym2413_interface=
{
1, /* 1 chip */
8000000, /* 8MHz ??? (hand tuned) */
{ 50 }, /* Volume */
};
static struct OKIM6295interface okim6295_interface =
{
1, /* 1 chip */
{ 8000 }, /* 8000Hz ??? */
{ REGION_SOUND1 }, /* memory region */
{ 50 }
};
static struct MachineDriver machine_driver_cbasebal =
{
{
{
CPU_Z80,
6000000, /* ??? */
cbasebal_readmem,cbasebal_writemem,cbasebal_readport,cbasebal_writeport,
interrupt,1 /* ??? */
},
},
60, DEFAULT_REAL_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
1,
0,
64*8, 32*8, { 8*8, (64-8)*8-1, 2*8, 30*8-1 },
cbasebal_gfxdecodeinfo,
1024, 1024,
0,
VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE | VIDEO_UPDATE_BEFORE_VBLANK,
0,
cbasebal_vh_start,
cbasebal_vh_stop,
cbasebal_vh_screenrefresh,
0,0,0,0,
{
{
SOUND_OKIM6295,
&okim6295_interface
},
{
SOUND_YM2413,
&ym2413_interface
},
},
nvram_handler
};
ROM_START( cbasebal )
ROM_REGION( 2*0x90000, REGION_CPU1 ) /* 576k for code + 576k for decrypted opcodes */
ROM_LOAD( "cbj10.11j", 0x00000, 0x08000, 0xbbff0acc )
ROM_LOAD( "cbj07.16f", 0x10000, 0x20000, 0x8111d13f )
ROM_LOAD( "cbj06.14f", 0x30000, 0x20000, 0x9aaa0e37 )
ROM_LOAD( "cbj05.13f", 0x50000, 0x20000, 0xd0089f37 )
/* 0x70000-0x8ffff empty (space for 04) */
ROM_REGION( 0x10000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "cbj13.16m", 0x00000, 0x10000, 0x2359fa0a ) /* text */
ROM_REGION( 0x80000, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "cbj02.1f", 0x00000, 0x20000, 0xd6740535 ) /* tiles */
ROM_LOAD( "cbj03.2f", 0x20000, 0x20000, 0x88098dcd )
ROM_LOAD( "cbj08.1j", 0x40000, 0x20000, 0x5f3344bf )
ROM_LOAD( "cbj09.2j", 0x60000, 0x20000, 0xaafffdae )
ROM_REGION( 0x80000, REGION_GFX3 | REGIONFLAG_DISPOSE )
ROM_LOAD( "cbj11.1m", 0x00000, 0x20000, 0xbdc1507d ) /* sprites */
ROM_LOAD( "cbj12.2m", 0x20000, 0x20000, 0x973f3efe )
ROM_LOAD( "cbj14.1n", 0x40000, 0x20000, 0x765dabaa )
ROM_LOAD( "cbj15.2n", 0x60000, 0x20000, 0x74756de5 )
ROM_REGION( 0x80000, REGION_SOUND1 ) /* OKIM */
ROM_LOAD( "cbj01.1e", 0x00000, 0x20000, 0x1d8968bd )
ROM_END
void init_cbasebal(void)
{
pang_decode();
}
GAME( 1989, cbasebal, 0, cbasebal, cbasebal, cbasebal, ROT0, "Capcom", "Capcom Baseball (Japan)" )