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AmigActive 10
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mermaid.c
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C/C++ Source or Header
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2000-05-04
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7KB
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240 lines
/***************************************************************************
Mermaid
Driver by Zsolt Vasvari
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
extern unsigned char* mermaid_background_videoram;
extern unsigned char* mermaid_foreground_videoram;
extern unsigned char* mermaid_foreground_colorram;
extern unsigned char* mermaid_background_scrollram;
extern unsigned char* mermaid_foreground_scrollram;
void mermaid_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
void mermaid_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
static unsigned char *mermaid_AY8910_enable;
static WRITE_HANDLER( mermaid_AY8910_write_port_w )
{
if (mermaid_AY8910_enable[0]) AY8910_write_port_0_w(offset, data);
if (mermaid_AY8910_enable[1]) AY8910_write_port_1_w(offset, data);
}
static WRITE_HANDLER( mermaid_AY8910_control_port_w )
{
if (mermaid_AY8910_enable[0]) AY8910_control_port_0_w(offset, data);
if (mermaid_AY8910_enable[1]) AY8910_control_port_1_w(offset, data);
}
static READ_HANDLER( mermaid_f800_r )
{
// collision register active LO
// Bit 0
// Bit 1 - Sprite - Foreground
//return rand() & 0xff;
return 0x00;
}
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0x9fff, MRA_ROM },
{ 0xc000, 0xcbff, MRA_RAM },
{ 0xd000, 0xd3ff, MRA_RAM },
{ 0xd800, 0xd81f, MRA_RAM },
{ 0xd840, 0xd8bf, MRA_RAM },
{ 0xdc00, 0xdfff, MRA_RAM },
{ 0xe000, 0xe000, input_port_0_r },
{ 0xe800, 0xe800, input_port_1_r },
{ 0xf000, 0xf000, input_port_2_r },
{ 0xf800, 0xf800, mermaid_f800_r },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0x9fff, MWA_ROM },
{ 0xc000, 0xc7ff, MWA_RAM },
{ 0xc800, 0xcbff, MWA_RAM, &mermaid_background_videoram, &videoram_size },
{ 0xd000, 0xd3ff, MWA_RAM, &mermaid_foreground_videoram },
{ 0xd800, 0xd81f, MWA_RAM, &mermaid_background_scrollram },
{ 0xd840, 0xd85f, MWA_RAM, &mermaid_foreground_scrollram },
{ 0xd880, 0xd8bf, MWA_RAM, &spriteram, &spriteram_size },
{ 0xdc00, 0xdfff, MWA_RAM, &mermaid_foreground_colorram },
{ 0xe000, 0xe001, MWA_RAM, &mermaid_AY8910_enable },
{ 0xe007, 0xe007, interrupt_enable_w },
{ 0xe807, 0xe807, MWA_NOP }, /* watchdog? */
{ 0xf802, 0xf802, MWA_NOP }, /* ??? see memory map */
{ 0xf806, 0xf806, mermaid_AY8910_write_port_w },
{ 0xf807, 0xf807, mermaid_AY8910_control_port_w },
{ -1 } /* end of table */
};
INPUT_PORTS_START( mermaid )
PORT_START /* DSW */
PORT_DIPNAME( 0x01, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x01, DEF_STR( Cocktail ) )
PORT_DIPNAME( 0x30, 0x00, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x00, "3" )
PORT_DIPSETTING( 0x10, "4" )
PORT_DIPSETTING( 0x20, "5" )
PORT_DIPSETTING( 0x30, "6" )
PORT_START /* IN0 */
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP | IPF_8WAY )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_8WAY )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT | IPF_8WAY )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN | IPF_8WAY )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_START1 )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_START2 )
PORT_START /* IN1 */
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_COIN1 )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_COIN2 )
INPUT_PORTS_END
static struct GfxLayout background_charlayout =
{
8,8, /* 8*8 chars */
256, /* 256 characters */
1, /* 1 bit per pixel */
{ 0 }, /* single bitplane */
{ 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 char takes 8 consecutive bytes */
};
static struct GfxLayout foreground_charlayout =
{
8,8, /* 8*8 chars */
1024, /* 1024 characters */
2, /* 2 bits per pixel */
{ 0, 1024*8*8 }, /* the two bitplanes are separated */
{ 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 char takes 8 consecutive bytes */
};
static struct GfxLayout spritelayout =
{
16,16, /* 16*16 sprites */
256, /* 256 sprites */
2, /* 2 bits per pixel */
{ 0, 256*32*8 }, /* the two bitplanes are separated */
{ 0, 1, 2, 3, 4, 5, 6, 7,
8*8+0, 8*8+1, 8*8+2, 8*8+3, 8*8+4, 8*8+5, 8*8+6, 8*8+7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
16*8, 17*8, 18*8, 19*8, 20*8, 21*8, 22*8, 23*8 },
32*8 /* every sprite takes 32 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ REGION_GFX1, 0, &foreground_charlayout, 0, 16 },
{ REGION_GFX1, 0, &spritelayout, 0, 16 },
{ REGION_GFX2, 0, &background_charlayout, 4*16, 2 },
{ -1 } /* end of array */
};
static struct AY8910interface ay8910_interface =
{
2, /* 2 chips */
1500000, /* 1.5 MHz ? */
{ 25, 25 },
{ 0 },
{ 0 },
{ 0 },
{ 0 }
};
static struct MachineDriver machine_driver_mermaid =
{
/* basic machine hardware */
{
{
CPU_Z80,
4000000, /* 4.00 MHz??? */
readmem,writemem,0,0,
nmi_interrupt,1
}
},
60, DEFAULT_REAL_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
1, /* 1 CPU slice per frame - interleaving is forced when a sound command is written */
0,
/* video hardware */
32*8, 32*8, { 0*8, 32*8-1, 2*8, 30*8-1 },
gfxdecodeinfo,
4*16+1, 4*16+2*2,
mermaid_vh_convert_color_prom,
VIDEO_TYPE_RASTER,
0,
generic_vh_start,
generic_vh_stop,
mermaid_vh_screenrefresh,
/* sound hardware */
0,0,0,0,
{
{
SOUND_AY8910,
&ay8910_interface
}
}
};
/***************************************************************************
Game driver(s)
***************************************************************************/
ROM_START( mermaid )
ROM_REGION( 0x10000, REGION_CPU1 ) /* 64k for code */
ROM_LOAD( "g960_32.15", 0x0000, 0x1000, 0x8311f090 )
ROM_LOAD( "g960_33.16", 0x1000, 0x1000, 0x9f274fc4 )
ROM_LOAD( "g960_34.17", 0x2000, 0x1000, 0x5f910179 )
ROM_LOAD( "g960_35.18", 0x3000, 0x1000, 0xdb1868a1 )
ROM_LOAD( "g960_36.19", 0x4000, 0x1000, 0x178a3567 )
ROM_LOAD( "g960_37.20", 0x5000, 0x1000, 0x7d602527 )
ROM_LOAD( "g960_38.21", 0x6000, 0x1000, 0xbf9f623c )
ROM_LOAD( "g960_39.22", 0x7000, 0x1000, 0xdf0db390 )
ROM_LOAD( "g960_40.23", 0x8000, 0x1000, 0xfb7aba3f )
ROM_LOAD( "g960_41.24", 0x9000, 0x1000, 0xd022981d )
ROM_REGION( 0x4000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "g960_45.77", 0x0000, 0x1000, 0x1f6b735e )
ROM_LOAD( "g960_44.76", 0x1000, 0x1000, 0xfd76074e )
ROM_LOAD( "g960_47.79", 0x2000, 0x1000, 0x3b7d4ad0 )
ROM_LOAD( "g960_46.78", 0x3000, 0x1000, 0x50c117cd )
ROM_REGION( 0x1000, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "g960_43.26", 0x0000, 0x1000, 0x6f077417 )
ROM_REGION( 0x0040, REGION_PROMS )
ROM_LOAD( "col_a", 0x0000, 0x0020, 0xef87bcd6 )
ROM_LOAD( "col_b", 0x0020, 0x0020, 0xca48abdd )
ROM_END
GAMEX( 1982, mermaid, 0, mermaid, mermaid, 0, ROT0, "Rock-ola", "Mermaid", GAME_NOT_WORKING )