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AmigActive 10
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AACD 10.iso
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exerion.c
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C/C++ Source or Header
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2000-04-23
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18KB
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519 lines
/***************************************************************************
Exerion by Jaleco
Exerion is a unique driver in that it has idiosyncracies that are straight
out of Bizarro World. I submit for your approval:
* The mystery reads from $d802 - timer-based protection?
* The freakish graphics encoding scheme, which no other MAME-supported game uses
* The sprite-ram, and all the funky parameters that go along with it
* The unusual parallaxed background. Is it controlled by the 2nd CPU?
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
void exerion_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable, const unsigned char *color_prom);
int exerion_vh_start(void);
void exerion_vh_stop(void);
void exerion_vh_screenrefresh(struct osd_bitmap *bitmap, int full_refresh);
WRITE_HANDLER( exerion_videoreg_w );
WRITE_HANDLER( exerion_video_latch_w );
READ_HANDLER( exerion_video_timing_r );
extern UINT8 exerion_cocktail_flip;
/*********************************************************************
* Interrupts & inputs
*********************************************************************/
static READ_HANDLER( exerion_port01_r )
{
/* the cocktail flip bit muxes between ports 0 and 1 */
return exerion_cocktail_flip ? input_port_1_r(offset) : input_port_0_r(offset);
}
static READ_HANDLER( exerion_port3_r )
{
/* bit 0 is VBLANK, which we simulate manually */
int result = input_port_3_r(offset);
int ybeam = cpu_getscanline();
if (ybeam > Machine->drv->visible_area.max_y)
result |= 1;
return result;
}
static int exerion_interrupt(void)
{
/* Exerion triggers NMIs on coin insertion */
if (readinputport(4) & 1)
return nmi_interrupt();
else return ignore_interrupt();
}
/*********************************************************************
* Protection??
*********************************************************************/
/* This is the first of many Exerion "features." No clue if it's */
/* protection or some sort of timer. */
static UINT8 porta;
static UINT8 portb;
static READ_HANDLER( exerion_porta_r )
{
porta ^= 0x40;
return porta;
}
static WRITE_HANDLER( exerion_portb_w )
{
/* pull the expected value from the ROM */
porta = memory_region(REGION_CPU1)[0x5f76];
portb = data;
logerror("Port B = %02X\n", data);
}
static READ_HANDLER( exerion_protection_r )
{
UINT8 *RAM = memory_region(REGION_CPU1);
if (cpu_get_pc() == 0x4143)
return RAM[0x33c0 + (RAM[0x600d] << 2) + offset];
else
return RAM[0x6008 + offset];
}
/*********************************************************************
* CPU memory structures
*********************************************************************/
static struct MemoryReadAddress readmem[] =
{
{ 0x0000, 0x5fff, MRA_ROM },
{ 0x6008, 0x600b, exerion_protection_r },
{ 0x6000, 0x67ff, MRA_RAM },
{ 0x8000, 0x8bff, MRA_RAM },
{ 0xa000, 0xa000, exerion_port01_r },
{ 0xa800, 0xa800, input_port_2_r },
{ 0xb000, 0xb000, exerion_port3_r },
{ 0xd802, 0xd802, AY8910_read_port_1_r },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress writemem[] =
{
{ 0x0000, 0x5fff, MWA_ROM },
{ 0x6000, 0x67ff, MWA_RAM },
{ 0x8000, 0x87ff, videoram_w, &videoram, &videoram_size },
{ 0x8800, 0x887f, MWA_RAM, &spriteram, &spriteram_size },
{ 0x8800, 0x8bff, MWA_RAM },
{ 0xc000, 0xc000, exerion_videoreg_w },
{ 0xc800, 0xc800, soundlatch_w },
{ 0xd000, 0xd000, AY8910_control_port_0_w },
{ 0xd001, 0xd001, AY8910_write_port_0_w },
{ 0xd800, 0xd800, AY8910_control_port_1_w },
{ 0xd801, 0xd801, AY8910_write_port_1_w },
{ -1 } /* end of table */
};
static struct MemoryReadAddress cpu2_readmem[] =
{
{ 0x0000, 0x1fff, MRA_ROM },
{ 0x4000, 0x47ff, MRA_RAM },
{ 0x6000, 0x6000, soundlatch_r },
{ 0xa000, 0xa000, exerion_video_timing_r },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress cpu2_writemem[] =
{
{ 0x0000, 0x1fff, MWA_ROM },
{ 0x4000, 0x47ff, MWA_RAM },
{ 0x8000, 0x800c, exerion_video_latch_w },
{ -1 } /* end of table */
};
/*********************************************************************
* Input port definitions
*********************************************************************/
INPUT_PORTS_START( exerion )
PORT_START /* player 1 inputs (muxed on 0xa000) */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_PLAYER1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_PLAYER1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER1 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_PLAYER1 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER1 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )
PORT_START /* player 2 inputs (muxed on 0xa000) */
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_PLAYER2 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_PLAYER2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER2 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_PLAYER2 )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )
PORT_START /* dip switches (0xa800) */
PORT_DIPNAME( 0x07, 0x02, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x00, "1" )
PORT_DIPSETTING( 0x01, "2" )
PORT_DIPSETTING( 0x02, "3" )
PORT_DIPSETTING( 0x03, "4" )
PORT_DIPSETTING( 0x04, "5" )
PORT_BITX(0, 0x07, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "Infinite", IP_KEY_NONE, IP_JOY_NONE )
PORT_DIPNAME( 0x18, 0x00, DEF_STR( Bonus_Life ) )
PORT_DIPSETTING( 0x00, "10000" )
PORT_DIPSETTING( 0x08, "20000" )
PORT_DIPSETTING( 0x10, "30000" )
PORT_DIPSETTING( 0x18, "40000" )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) /* used */
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x20, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x00, DEF_STR( Difficulty ) )
PORT_DIPSETTING( 0x00, "Easy" )
PORT_DIPSETTING( 0x40, "Hard" )
PORT_DIPNAME( 0x80, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x80, DEF_STR( Cocktail ) )
PORT_START /* dip switches/VBLANK (0xb000) */
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNUSED ) /* VBLANK */
PORT_DIPNAME( 0x02, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x02, DEF_STR( On ) )
PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x04, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x08, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x0c, DEF_STR( 1C_4C ) )
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* FAKE */
/* The coin slots are not memory mapped. */
/* This fake input port is used by the interrupt */
/* handler to be notified of coin insertions. We use IMPULSE to */
/* trigger exactly one interrupt, without having to check when the */
/* user releases the key. */
PORT_BIT_IMPULSE( 0x01, IP_ACTIVE_HIGH, IPT_COIN1, 1 )
INPUT_PORTS_END
/*********************************************************************
* Graphics layouts
*********************************************************************/
static struct GfxLayout charlayout =
{
8,8, /* 8*8 characters */
512, /* total number of chars */
2, /* 2 bits per pixel (# of planes) */
{ 0, 4 }, /* start of every bitplane */
{ 3, 2, 1, 0, 8+3, 8+2, 8+1, 8+0 },
{ 16*0, 16*1, 16*2, 16*3, 16*4, 16*5, 16*6, 16*7 },
16*8 /* every char takes 16 consecutive bytes */
};
/* 16 x 16 sprites -- requires reorganizing characters in init_exerion() */
static struct GfxLayout spritelayout =
{
16,16, /* 16*16 sprites */
128*2, /* total number of sprites in the rom */
2, /* 2 bits per pixel (# of planes) */
{ 0, 4 }, /* start of every bitplane */
{ 3, 2, 1, 0, 8+3, 8+2, 8+1, 8+0,
16+3, 16+2, 16+1, 16+0, 24+3, 24+2, 24+1, 24+0 },
{ 32*0, 32*1, 32*2, 32*3, 32*4, 32*5, 32*6, 32*7,
32*8, 32*9, 32*10, 32*11, 32*12, 32*13, 32*14, 32*15 },
64*8 /* every sprite takes 64 consecutive bytes */
};
/* Quick and dirty way to emulate pixel-doubled sprites. */
static struct GfxLayout bigspritelayout =
{
32,32, /* 32*32 sprites */
128*2, /* total number of sprites in the rom */
2, /* 2 bits per pixel (# of planes) */
{ 0, 4 }, /* start of every bitplane */
{ 3, 3, 2, 2, 1, 1, 0, 0,
8+3, 8+3, 8+2, 8+2, 8+1, 8+1, 8+0, 8+0,
16+3, 16+3, 16+2, 16+2, 16+1, 16+1, 16+0, 16+0,
24+3, 24+3, 24+2, 24+2, 24+1, 24+1, 24+0, 24+0 },
{ 32*0, 32*0, 32*1, 32*1, 32*2, 32*2, 32*3, 32*3,
32*4, 32*4, 32*5, 32*5, 32*6, 32*6, 32*7, 32*7,
32*8, 32*8, 32*9, 32*9, 32*10, 32*10, 32*11, 32*11,
32*12, 32*12, 32*13, 32*13, 32*14, 32*14, 32*15, 32*15 },
64*8 /* every sprite takes 64 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ REGION_GFX1, 0, &charlayout, 0, 64 },
{ REGION_GFX2, 0, &spritelayout, 256, 64 },
{ REGION_GFX2, 0, &bigspritelayout, 256, 64 },
{ -1 } /* end of array */
};
/*********************************************************************
* Sound interfaces
*********************************************************************/
static struct AY8910interface ay8910_interface =
{
2, /* 2 chips */
10000000/6, /* 1.666 MHz */
{ 30, 30 },
{ 0, exerion_porta_r },
{ 0 },
{ 0 },
{ 0, exerion_portb_w }
};
/*********************************************************************
* Machine driver
*********************************************************************/
static struct MachineDriver machine_driver_exerion =
{
/* basic machine hardware */
{
{
CPU_Z80,
10000000/3, /* 3.333 MHz */
readmem,writemem,0,0,
exerion_interrupt,1
},
{
CPU_Z80,
10000000/3, /* 3.333 MHz */
cpu2_readmem,cpu2_writemem,0,0,
ignore_interrupt,0
}
},
60, 0, /* frames per second, vblank duration */
1, /* 1 CPU slice per frame - interleaving is forced when a sound command is written */
0,
/* video hardware */
64*8, 32*8, { 12*8, 52*8-1, 2*8, 30*8-1 },
gfxdecodeinfo,
32,256*3,
exerion_vh_convert_color_prom,
VIDEO_TYPE_RASTER,
0,
exerion_vh_start,
exerion_vh_stop,
exerion_vh_screenrefresh,
/* sound hardware */
0,0,0,0,
{
{
SOUND_AY8910,
&ay8910_interface
}
}
};
/*********************************************************************
* ROM definitions
*********************************************************************/
ROM_START( exerion )
ROM_REGION( 0x10000, REGION_CPU1 ) /* 64k for code */
ROM_LOAD( "exerion.07", 0x0000, 0x2000, 0x4c78d57d )
ROM_LOAD( "exerion.08", 0x2000, 0x2000, 0xdcadc1df )
ROM_LOAD( "exerion.09", 0x4000, 0x2000, 0x34cc4d14 )
ROM_REGION( 0x10000, REGION_CPU2 ) /* 64k for the second CPU */
ROM_LOAD( "exerion.05", 0x0000, 0x2000, 0x32f6bff5 )
ROM_REGION( 0x02000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.06", 0x00000, 0x2000, 0x435a85a4 ) /* fg chars */
ROM_REGION( 0x04000, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.11", 0x00000, 0x2000, 0xf0633a09 ) /* sprites */
ROM_LOAD( "exerion.10", 0x02000, 0x2000, 0x80312de0 )
ROM_REGION( 0x08000, REGION_GFX3 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.03", 0x00000, 0x2000, 0x790595b8 ) /* bg data */
ROM_LOAD( "exerion.04", 0x02000, 0x2000, 0xd7abd0b9 )
ROM_LOAD( "exerion.01", 0x04000, 0x2000, 0x5bb755cb )
ROM_LOAD( "exerion.02", 0x06000, 0x2000, 0xa7ecbb70 )
ROM_REGION( 0x0420, REGION_PROMS )
ROM_LOAD( "exerion.e1", 0x0000, 0x0020, 0x2befcc20 ) /* palette */
ROM_LOAD( "exerion.i8", 0x0020, 0x0100, 0x31db0e08 ) /* fg char lookup table */
ROM_LOAD( "exerion.h10", 0x0120, 0x0100, 0xcdd23f3e ) /* sprite lookup table */
ROM_LOAD( "exerion.i3", 0x0220, 0x0100, 0xfe72ab79 ) /* bg char lookup table */
ROM_LOAD( "exerion.k4", 0x0320, 0x0100, 0xffc2ba43 ) /* bg char mixer */
ROM_END
ROM_START( exeriont )
ROM_REGION( 0x10000, REGION_CPU1 ) /* 64k for code */
ROM_LOAD( "prom5.4p", 0x0000, 0x4000, 0x58b4dc1b )
ROM_LOAD( "prom6.4s", 0x4000, 0x2000, 0xfca18c2d )
ROM_REGION( 0x10000, REGION_CPU2 ) /* 64k for the second CPU */
ROM_LOAD( "exerion.05", 0x0000, 0x2000, 0x32f6bff5 )
ROM_REGION( 0x02000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.06", 0x00000, 0x2000, 0x435a85a4 ) /* fg chars */
ROM_REGION( 0x04000, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.11", 0x00000, 0x2000, 0xf0633a09 ) /* sprites */
ROM_LOAD( "exerion.10", 0x02000, 0x2000, 0x80312de0 )
ROM_REGION( 0x08000, REGION_GFX3 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.03", 0x00000, 0x2000, 0x790595b8 ) /* bg data */
ROM_LOAD( "exerion.04", 0x02000, 0x2000, 0xd7abd0b9 )
ROM_LOAD( "exerion.01", 0x04000, 0x2000, 0x5bb755cb )
ROM_LOAD( "exerion.02", 0x06000, 0x2000, 0xa7ecbb70 )
ROM_REGION( 0x0420, REGION_PROMS )
ROM_LOAD( "exerion.e1", 0x0000, 0x0020, 0x2befcc20 ) /* palette */
ROM_LOAD( "exerion.i8", 0x0020, 0x0100, 0x31db0e08 ) /* fg char lookup table */
ROM_LOAD( "exerion.h10", 0x0120, 0x0100, 0xcdd23f3e ) /* sprite lookup table */
ROM_LOAD( "exerion.i3", 0x0220, 0x0100, 0xfe72ab79 ) /* bg char lookup table */
ROM_LOAD( "exerion.k4", 0x0320, 0x0100, 0xffc2ba43 ) /* bg char mixer */
ROM_END
ROM_START( exerionb )
ROM_REGION( 0x10000, REGION_CPU1 ) /* 64k for code */
ROM_LOAD( "eb5.bin", 0x0000, 0x4000, 0xda175855 )
ROM_LOAD( "eb6.bin", 0x4000, 0x2000, 0x0dbe2eff )
ROM_REGION( 0x10000, REGION_CPU2 ) /* 64k for the second CPU */
ROM_LOAD( "exerion.05", 0x0000, 0x2000, 0x32f6bff5 )
ROM_REGION( 0x02000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.06", 0x00000, 0x2000, 0x435a85a4 ) /* fg chars */
ROM_REGION( 0x04000, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.11", 0x00000, 0x2000, 0xf0633a09 ) /* sprites */
ROM_LOAD( "exerion.10", 0x02000, 0x2000, 0x80312de0 )
ROM_REGION( 0x08000, REGION_GFX3 | REGIONFLAG_DISPOSE )
ROM_LOAD( "exerion.03", 0x00000, 0x2000, 0x790595b8 ) /* bg data */
ROM_LOAD( "exerion.04", 0x02000, 0x2000, 0xd7abd0b9 )
ROM_LOAD( "exerion.01", 0x04000, 0x2000, 0x5bb755cb )
ROM_LOAD( "exerion.02", 0x06000, 0x2000, 0xa7ecbb70 )
ROM_REGION( 0x0420, REGION_PROMS )
ROM_LOAD( "exerion.e1", 0x0000, 0x0020, 0x2befcc20 ) /* palette */
ROM_LOAD( "exerion.i8", 0x0020, 0x0100, 0x31db0e08 ) /* fg char lookup table */
ROM_LOAD( "exerion.h10", 0x0120, 0x0100, 0xcdd23f3e ) /* sprite lookup table */
ROM_LOAD( "exerion.i3", 0x0220, 0x0100, 0xfe72ab79 ) /* bg char lookup table */
ROM_LOAD( "exerion.k4", 0x0320, 0x0100, 0xffc2ba43 ) /* bg char mixer */
ROM_END
/*********************************************************************
* Initialization routines
*********************************************************************/
static void init_exerion(void)
{
UINT32 oldaddr, newaddr, length;
UINT8 *src, *dst, *temp;
/* allocate some temporary space */
temp = malloc(0x8000);
if (!temp)
return;
/* make a temporary copy of the character data */
src = temp;
dst = memory_region(REGION_GFX1);
length = memory_region_length(REGION_GFX1);
memcpy(src, dst, length);
/* decode the characters */
/* the bits in the ROM are ordered: n8-n7 n6 n5 n4-v2 v1 v0 n3-n2 n1 n0 h2 */
/* we want them ordered like this: n8-n7 n6 n5 n4-n3 n2 n1 n0-v2 v1 v0 h2 */
for (oldaddr = 0; oldaddr < length; oldaddr++)
{
newaddr = ((oldaddr ) & 0x1f00) | /* keep n8-n4 */
((oldaddr << 3) & 0x00f0) | /* move n3-n0 */
((oldaddr >> 4) & 0x000e) | /* move v2-v0 */
((oldaddr ) & 0x0001); /* keep h2 */
dst[newaddr] = src[oldaddr];
}
/* make a temporary copy of the sprite data */
src = temp;
dst = memory_region(REGION_GFX2);
length = memory_region_length(REGION_GFX2);
memcpy(src, dst, length);
/* decode the sprites */
/* the bits in the ROMs are ordered: n3 n7-n6 n5 n4 v3-v2 v1 v0 n2-n1 n0 h3 h2 */
/* we want them ordered like this: n7 n6-n5 n4 n3 n2-n1 n0 v3 v2-v1 v0 h3 h2 */
for (oldaddr = 0; oldaddr < length; oldaddr++)
{
newaddr = ((oldaddr << 1) & 0x3c00) | /* move n7-n4 */
((oldaddr >> 4) & 0x0200) | /* move n3 */
((oldaddr << 4) & 0x01c0) | /* move n2-n0 */
((oldaddr >> 3) & 0x003c) | /* move v3-v0 */
((oldaddr ) & 0x0003); /* keep h3-h2 */
dst[newaddr] = src[oldaddr];
}
free(temp);
}
static void init_exerionb(void)
{
UINT8 *ram = memory_region(REGION_CPU1);
int addr;
/* the program ROMs have data lines D1 and D2 swapped. Decode them. */
for (addr = 0; addr < 0x6000; addr++)
ram[addr] = (ram[addr] & 0xf9) | ((ram[addr] & 2) << 1) | ((ram[addr] & 4) >> 1);
/* also convert the gfx as in Exerion */
init_exerion();
}
/*********************************************************************
* Game drivers
*********************************************************************/
GAMEX( 1983, exerion, 0, exerion, exerion, exerion, ROT90, "Jaleco", "Exerion", GAME_IMPERFECT_COLORS )
GAMEX( 1983, exeriont, exerion, exerion, exerion, exerion, ROT90, "Jaleco (Taito America license)", "Exerion (Taito)", GAME_IMPERFECT_COLORS )
GAMEX( 1983, exerionb, exerion, exerion, exerion, exerionb, ROT90, "Jaleco", "Exerion (bootleg)", GAME_IMPERFECT_COLORS )