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thunderj.c
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C/C++ Source or Header
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2000-05-06
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15KB
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475 lines
/***************************************************************************
Thunderjaws
driver by Aaron Giles
****************************************************************************/
#include "driver.h"
#include "machine/atarigen.h"
#include "sndhrdw/atarijsa.h"
#include "vidhrdw/generic.h"
void thunderj_set_alpha_bank(int bank);
WRITE_HANDLER( thunderj_playfieldram_w );
WRITE_HANDLER( thunderj_playfield2ram_w );
WRITE_HANDLER( thunderj_colorram_w );
int thunderj_vh_start(void);
void thunderj_vh_stop(void);
void thunderj_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
void thunderj_scanline_update(int scanline);
static UINT8 *rts_address;
/*************************************
*
* Initialization
*
*************************************/
static void update_interrupts(void)
{
int newstate = 0;
int newstate2 = 0;
if (atarigen_scanline_int_state)
newstate |= 4, newstate2 |= 4;
if (atarigen_sound_int_state)
newstate |= 6;
if (newstate)
cpu_set_irq_line(0, newstate, ASSERT_LINE);
else
cpu_set_irq_line(0, 7, CLEAR_LINE);
if (newstate2)
cpu_set_irq_line(1, newstate2, ASSERT_LINE);
else
cpu_set_irq_line(1, 7, CLEAR_LINE);
}
static void init_machine(void)
{
atarigen_eeprom_reset();
atarigen_video_control_reset();
atarigen_interrupt_reset(update_interrupts);
atarigen_scanline_timer_reset(thunderj_scanline_update, 8);
atarijsa_reset();
}
/*************************************
*
* I/O handling
*
*************************************/
static READ_HANDLER( special_port2_r )
{
int result = input_port_2_r(offset);
if (atarigen_sound_to_cpu_ready) result ^= 0x0004;
if (atarigen_cpu_to_sound_ready) result ^= 0x0008;
result ^= 0x0010;
return result;
}
static WRITE_HANDLER( latch_w )
{
/* reset extra CPU */
if (!(data & 0x00ff0000))
{
/* 0 means hold CPU 2's reset low */
if (data & 1)
cpu_set_reset_line(1,CLEAR_LINE);
else
cpu_set_reset_line(1,ASSERT_LINE);
/* bits 2-5 are the alpha bank */
thunderj_set_alpha_bank((data >> 2) & 7);
}
}
/*************************************
*
* Video Controller Hack
*
*************************************/
READ_HANDLER( thunderj_video_control_r )
{
/* Sigh. CPU #1 reads the video controller register twice per frame, once at
the beginning of interrupt and once near the end. It stores these values in a
table starting at $163484. CPU #2 periodically looks at this table to make
sure that it is getting interrupts at the appropriate times, and that the
VBLANK bit is set appropriately. Unfortunately, due to all the cpu_yield()
calls we make to synchronize the two CPUs, we occasionally get out of time
and generate the interrupt outside of the tight tolerances CPU #2 expects.
So we fake it. Returning scanlines $f5 and $f7 alternately provides the
correct answer that causes CPU #2 to be happy and not aggressively trash
memory (which is what it does if this interrupt test fails -- see the code
at $1E56 to see!) */
/* Use these lines to detect when things go south:
if (cpu_readmem24bew_word(0x163482) > 0xfff)
printf("You're screwed!");*/
return atarigen_video_control_r(offset);
}
/*************************************
*
* Main CPU memory handlers
*
*************************************/
static struct MemoryReadAddress main_readmem[] =
{
{ 0x000000, 0x09ffff, MRA_ROM },
{ 0x0e0000, 0x0e0fff, atarigen_eeprom_r },
{ 0x160000, 0x16ffff, MRA_BANK1 },
{ 0x260000, 0x26000f, input_port_0_r },
{ 0x260010, 0x260011, input_port_1_r },
{ 0x260012, 0x260013, special_port2_r },
{ 0x260030, 0x260031, atarigen_sound_r },
{ 0x3e0000, 0x3e0fff, paletteram_word_r },
{ 0x3effc0, 0x3effff, thunderj_video_control_r },
{ 0x3f0000, 0x3f5fff, MRA_BANK3 },
{ 0x3f6000, 0x3f7fff, MRA_BANK4 },
{ 0x3f8000, 0x3f8fff, MRA_BANK5 },
{ 0x3f9000, 0x3fffff, MRA_BANK6 },
{ 0x800000, 0x800001, MRA_BANK7 },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress main_writemem[] =
{
{ 0x000000, 0x09ffff, MWA_ROM },
{ 0x0e0000, 0x0e0fff, atarigen_eeprom_w, &atarigen_eeprom, &atarigen_eeprom_size },
{ 0x160000, 0x16ffff, MWA_BANK1 },
{ 0x1f0000, 0x1fffff, atarigen_eeprom_enable_w },
{ 0x2e0000, 0x2e0001, watchdog_reset_w },
{ 0x360010, 0x360011, latch_w },
{ 0x360020, 0x360021, atarigen_sound_reset_w },
{ 0x360030, 0x360031, atarigen_sound_w },
{ 0x3e0000, 0x3e0fff, atarigen_666_paletteram_w, &paletteram },
{ 0x3effc0, 0x3effff, atarigen_video_control_w, &atarigen_video_control_data },
{ 0x3f0000, 0x3f1fff, thunderj_playfield2ram_w, &atarigen_playfield2ram, &atarigen_playfield2ram_size },
{ 0x3f2000, 0x3f3fff, thunderj_playfieldram_w, &atarigen_playfieldram, &atarigen_playfieldram_size },
{ 0x3f4000, 0x3f5fff, thunderj_colorram_w, &atarigen_playfieldram_color },
{ 0x3f6000, 0x3f7fff, MWA_BANK4, &atarigen_spriteram, &atarigen_spriteram_size },
{ 0x3f8000, 0x3f8fff, MWA_BANK5, &atarigen_alpharam, &atarigen_alpharam_size },
{ 0x3f9000, 0x3fffff, MWA_BANK6 },
{ 0x800000, 0x800001, MWA_BANK7, &rts_address },
{ -1 } /* end of table */
};
/*************************************
*
* Extra CPU memory handlers
*
*************************************/
static struct MemoryReadAddress extra_readmem[] =
{
{ 0x000000, 0x03ffff, MRA_ROM },
{ 0x060000, 0x07ffff, MRA_ROM },
{ 0x160000, 0x16ffff, MRA_BANK1 },
{ 0x260000, 0x26000f, input_port_0_r },
{ 0x260010, 0x260011, input_port_1_r },
{ 0x260012, 0x260013, special_port2_r },
{ 0x260030, 0x260031, atarigen_sound_r },
{ -1 } /* end of table */
};
static struct MemoryWriteAddress extra_writemem[] =
{
{ 0x000000, 0x03ffff, MWA_ROM },
{ 0x060000, 0x07ffff, MWA_ROM },
{ 0x160000, 0x16ffff, MWA_BANK1 },
{ 0x360000, 0x360001, atarigen_video_int_ack_w },
{ 0x360010, 0x360011, latch_w },
{ 0x360020, 0x360021, atarigen_sound_reset_w },
{ 0x360030, 0x360031, atarigen_sound_w },
{ -1 } /* end of table */
};
/*************************************
*
* Port definitions
*
*************************************/
INPUT_PORTS_START( thunderj )
PORT_START /* 260000 */
PORT_BIT( 0xffff, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START /* 260010 */
PORT_BIT( 0x00ff, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER1 )
PORT_BIT( 0x0c00, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_PLAYER1 )
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_PLAYER1 )
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_PLAYER1 )
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_PLAYER1 )
PORT_START /* 260012 */
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_VBLANK )
PORT_SERVICE( 0x0002, IP_ACTIVE_LOW )
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNUSED ) /* Input buffer full (@260030) */
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_UNUSED ) /* Output buffer full (@360030) */
PORT_BIT( 0x0010, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x00e0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
PORT_BIT( 0x0c00, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_PLAYER2 )
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_PLAYER2 )
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_PLAYER2 )
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_PLAYER2 )
JSA_II_PORT /* audio board port */
INPUT_PORTS_END
/*************************************
*
* Graphics definitions
*
*************************************/
static struct GfxLayout anlayout =
{
8,8, /* 8*8 chars */
4096, /* 4096 chars */
2, /* 2 bits per pixel */
{ 0, 4 },
{ 0, 1, 2, 3, 8, 9, 10, 11 },
{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
8*16 /* every char takes 16 consecutive bytes */
};
static struct GfxLayout pfmolayout =
{
8,8, /* 8*8 sprites */
32768, /* 32768 of them */
4, /* 4 bits per pixel */
{ 3*8*0x40000, 2*8*0x40000, 1*8*0x40000, 0*8*0x40000 },
{ 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 sprite takes 8 consecutive bytes */
};
static struct GfxDecodeInfo gfxdecodeinfo[] =
{
{ REGION_GFX1, 0, &pfmolayout, 512, 96 }, /* sprites & playfield */
{ REGION_GFX2, 0, &pfmolayout, 256, 112 }, /* sprites & playfield */
{ REGION_GFX3, 0, &anlayout, 0, 512 }, /* characters 8x8 */
{ -1 } /* end of array */
};
/*************************************
*
* Machine driver
*
*************************************/
static struct MachineDriver machine_driver_thunderj =
{
/* basic machine hardware */
{
{
CPU_M68000, /* verified */
ATARI_CLOCK_14MHz/2,
main_readmem,main_writemem,0,0,
ignore_interrupt,1
},
{
CPU_M68000, /* verified */
ATARI_CLOCK_14MHz/2,
extra_readmem,extra_writemem,0,0,
ignore_interrupt,1
},
JSA_II_CPU
},
60, DEFAULT_REAL_60HZ_VBLANK_DURATION, /* frames per second, vblank duration */
100,
init_machine,
/* video hardware */
42*8, 30*8, { 0*8, 42*8-1, 0*8, 30*8-1 },
gfxdecodeinfo,
2048, 2048,
0,
VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE | VIDEO_UPDATE_BEFORE_VBLANK,
0,
thunderj_vh_start,
thunderj_vh_stop,
thunderj_vh_screenrefresh,
/* sound hardware */
JSA_II_MONO(REGION_SOUND1),
atarigen_nvram_handler
};
/*************************************
*
* ROM decoding
*
*************************************/
static void rom_decode(void)
{
int i;
/* invert the graphics bits on the playfield and motion objects */
for (i = 0; i < memory_region_length(REGION_GFX1); i++)
memory_region(REGION_GFX1)[i] ^= 0xff;
for (i = 0; i < memory_region_length(REGION_GFX2); i++)
memory_region(REGION_GFX2)[i] ^= 0xff;
/* copy the shared ROM from region 0 to region 1 */
memcpy(&memory_region(REGION_CPU2)[0x60000], &memory_region(REGION_CPU1)[0x60000], 0x20000);
}
/*************************************
*
* Driver initialization
*
*************************************/
static void init_thunderj(void)
{
atarigen_eeprom_default = NULL;
atarijsa_init(2, 3, 2, 0x0002);
/* speed up the 6502 */
atarigen_init_6502_speedup(2, 0x4159, 0x4171);
/* it looks like they jsr to $800000 as some kind of protection */
/* put an RTS there so we don't die */
WRITE_WORD(rts_address, 0x4E75);
/* display messages */
atarigen_show_sound_message();
rom_decode();
}
/*************************************
*
* ROM definition(s)
*
*************************************/
ROM_START( thunderj )
ROM_REGION( 0xa0000, REGION_CPU1 ) /* 10*64k for 68000 code */
ROM_LOAD_EVEN( "2001.14e", 0x00000, 0x10000, 0xf6a71532 )
ROM_LOAD_ODD ( "2002.14c", 0x00000, 0x10000, 0x173ec10d )
ROM_LOAD_EVEN( "2003.15e", 0x20000, 0x10000, 0x6e155469 )
ROM_LOAD_ODD ( "2004.15c", 0x20000, 0x10000, 0xe9ff1e42 )
ROM_LOAD_EVEN( "2005.16e", 0x40000, 0x10000, 0xa40242e7 )
ROM_LOAD_ODD ( "2006.16c", 0x40000, 0x10000, 0xaa18b94c )
ROM_LOAD_EVEN( "1005.15h", 0x60000, 0x10000, 0x05474ebb )
ROM_LOAD_ODD ( "1010.16h", 0x60000, 0x10000, 0xccff21c8 )
ROM_LOAD_EVEN( "1007.17e", 0x80000, 0x10000, 0x9c2a8aba )
ROM_LOAD_ODD ( "1008.17c", 0x80000, 0x10000, 0x22109d16 )
ROM_REGION( 0x80000, REGION_CPU2 ) /* 8*64k for 68000 code */
ROM_LOAD_EVEN( "1011.17l", 0x00000, 0x10000, 0xbbbbca45 )
ROM_LOAD_ODD ( "1012.17n", 0x00000, 0x10000, 0x53e5e638 )
ROM_REGION( 0x14000, REGION_CPU3 ) /* 64k + 16k for 6502 code */
ROM_LOAD( "tjw65snd.bin", 0x10000, 0x4000, 0xd8feb7fb )
ROM_CONTINUE( 0x04000, 0xc000 )
ROM_REGION( 0x100000, REGION_GFX1 | REGIONFLAG_DISPOSE )
ROM_LOAD( "1021.5s", 0x000000, 0x10000, 0xd8432766 ) /* graphics, plane 0 */
ROM_LOAD( "1025.5r", 0x010000, 0x10000, 0x839feed5 )
ROM_LOAD( "1029.3p", 0x020000, 0x10000, 0xfa887662 )
ROM_LOAD( "1033.6p", 0x030000, 0x10000, 0x2addda79 )
ROM_LOAD( "1022.9s", 0x040000, 0x10000, 0xdcf50371 ) /* graphics, plane 1 */
ROM_LOAD( "1026.9r", 0x050000, 0x10000, 0x216e72c8 )
ROM_LOAD( "1030.10s", 0x060000, 0x10000, 0xdc51f606 )
ROM_LOAD( "1034.10r", 0x070000, 0x10000, 0xf8e35516 )
ROM_LOAD( "1023.13s", 0x080000, 0x10000, 0xb6dc3f13 ) /* graphics, plane 2 */
ROM_LOAD( "1027.13r", 0x090000, 0x10000, 0x621cc2ce )
ROM_LOAD( "1031.14s", 0x0a0000, 0x10000, 0x4682ceb5 )
ROM_LOAD( "1035.14r", 0x0b0000, 0x10000, 0x7a0e1b9e )
ROM_LOAD( "1024.17s", 0x0c0000, 0x10000, 0xd84452b5 ) /* graphics, plane 3 */
ROM_LOAD( "1028.17r", 0x0d0000, 0x10000, 0x0cc20245 )
ROM_LOAD( "1032.14p", 0x0e0000, 0x10000, 0xf639161a )
ROM_LOAD( "1036.16p", 0x0f0000, 0x10000, 0xb342443d )
ROM_REGION( 0x100000, REGION_GFX2 | REGIONFLAG_DISPOSE )
ROM_LOAD( "1037.2s", 0x000000, 0x10000, 0x07addba6 )
ROM_LOAD( "1041.2r", 0x010000, 0x10000, 0x1e9c29e4 )
ROM_LOAD( "1045.34s", 0x020000, 0x10000, 0xe7235876 )
ROM_LOAD( "1049.34r", 0x030000, 0x10000, 0xa6eb8265 )
ROM_LOAD( "1038.6s", 0x040000, 0x10000, 0x2ea543f9 )
ROM_LOAD( "1042.6r", 0x050000, 0x10000, 0xefabdc2b )
ROM_LOAD( "1046.7s", 0x060000, 0x10000, 0x6692151f )
ROM_LOAD( "1050.7r", 0x070000, 0x10000, 0xad7bb5f3 )
ROM_LOAD( "1039.11s", 0x080000, 0x10000, 0xcb563a40 )
ROM_LOAD( "1043.11r", 0x090000, 0x10000, 0xb7565eee )
ROM_LOAD( "1047.12s", 0x0a0000, 0x10000, 0x60877136 )
ROM_LOAD( "1051.12r", 0x0b0000, 0x10000, 0xd4715ff0 )
ROM_LOAD( "1040.15s", 0x0c0000, 0x10000, 0x6e910fc2 )
ROM_LOAD( "1044.15r", 0x0d0000, 0x10000, 0xff67a17a )
ROM_LOAD( "1048.16s", 0x0e0000, 0x10000, 0x200d45b3 )
ROM_LOAD( "1052.16r", 0x0f0000, 0x10000, 0x74711ef1 )
ROM_REGION( 0x010000, REGION_GFX3 | REGIONFLAG_DISPOSE )
ROM_LOAD( "1020.4m", 0x000000, 0x10000, 0x65470354 ) /* alphanumerics */
ROM_REGION( 0x40000, REGION_SOUND1 ) /* 256k for ADPCM */
ROM_LOAD( "tj1016.bin", 0x00000, 0x10000, 0xc10bdf73 )
ROM_LOAD( "tj1017.bin", 0x10000, 0x10000, 0x4e5e25e8 )
ROM_LOAD( "tj1018.bin", 0x20000, 0x10000, 0xec81895d )
ROM_LOAD( "tj1019.bin", 0x30000, 0x10000, 0xa4009037 )
ROM_END
GAME( 1990, thunderj, 0, thunderj, thunderj, thunderj, ROT0, "Atari Games", "ThunderJaws" )