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Haze: DoDonPachi Dai Jou Ou protection fixes, game seems playable (no credit wanted)

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This commit is contained in:
Angelo Salese 2010-12-10 15:48:47 +00:00
parent 96b9776773
commit b35e5f6eb1
1 changed files with 26 additions and 5 deletions
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31
src/mame/drivers/pgm.c
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@ -701,7 +701,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( cavepgm_mem, ADDRESS_SPACE_PROGRAM, 16)
AM_RANGE(0x000000, 0x3fffff) AM_ROM
AM_RANGE(0x700006, 0x700007) AM_WRITENOP // Watchdog?
// AM_RANGE(0x800000, 0x81ffff) AM_RAM AM_MIRROR(0x0e0000) AM_BASE(&pgm_mainram) AM_SHARE("sram") /* Main Ram */
@ -5454,6 +5454,8 @@ static DRIVER_INIT( kovqhsgs )
*/
static UINT16 value0, value1, valuekey, ddp3lastcommand;
static UINT32 valueresponse;
int ddp3internal_slot = 0;
UINT32 ddp3slots[0xff];
static WRITE16_HANDLER( ddp3_asic_w )
{
@ -5500,13 +5502,32 @@ static WRITE16_HANDLER( ddp3_asic_w )
break;
case 0x40:
case 0x67:
case 0x8e:
case 0xe5:
// what is it?
printf("%06x command %02x | %04x\n", cpu_get_pc(space->cpu), ddp3lastcommand, value0);
valueresponse = 0x880000;
break;
case 0x67:
printf("%06x command %02x | %04x\n", cpu_get_pc(space->cpu), ddp3lastcommand, value0);
valueresponse = 0x880000;
ddp3internal_slot = (value0 & 0xff00)>>8;
ddp3slots[ddp3internal_slot] = (value0 & 0x00ff) << 16;
break;
case 0xe5:
printf("%06x command %02x | %04x\n", cpu_get_pc(space->cpu), ddp3lastcommand, value0);
valueresponse = 0x880000;
ddp3slots[ddp3internal_slot] |= (value0 & 0xffff);
break;
case 0x8e:
printf("%06x command %02x | %04x\n", cpu_get_pc(space->cpu), ddp3lastcommand, value0);
valueresponse = ddp3slots[value0&0xff];
break;
case 0x99: // reset?
valuekey = 0x100;
valueresponse = 0x00880000;
@ -5551,7 +5572,7 @@ static READ16_HANDLER( ddp3_ram_mirror_r )
// HACK!
// this should be a mirror of main ram, at least according to the standard PGM map.
// returning 0x0000 for all values read from here allows the games to run for a bit longer tho
printf("%06x ddp3_ram_mirror_r would return %04x returning 0x0000 instead\n", cpu_get_pc(space->cpu), pgm_mainram[offset]);
//printf("%06x ddp3_ram_mirror_r would return %04x returning 0x0000 instead\n", cpu_get_pc(space->cpu), pgm_mainram[offset]);
return 0x0000;
//return pgm_mainram[offset];
}