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mapper 25 workaroung for "Ganbare Goemon Gaiden - Kieta Ougon Kiseru"

This commit is contained in:
CaH4e3 2010-07-01 18:17:24 +00:00
parent fbb7026afa
commit ee91747ce1
1 changed files with 17 additions and 3 deletions
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20
src/mappers/25.cpp
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@ -16,7 +16,7 @@
* You should have received a copy of the GNU General Public License * You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* (VRC4 mapper) * (VRCII mapper)
*/ */
#include "mapinc.h" #include "mapinc.h"
@ -26,9 +26,20 @@
#define K4sel mapbyte1[0] #define K4sel mapbyte1[0]
static int acount=0; static int acount=0;
static int weirdo=0;
static DECLFW(Mapper25_write) static DECLFW(Mapper25_write)
{ {
A=(A&0xF003)|((A&0xC)>>2); if(A==0xC007)
{
weirdo=8; // Ganbare Goemon Gaiden does strange things!!! at the end credits
// quick dirty hack, seems there is no other games with such PCB, so
// we never know if it will not work for something else lol
VROM_BANK1(0x0000,0xFC);
VROM_BANK1(0x0400,0xFD);
VROM_BANK1(0x0800,0xFF);
}
A=(A&0xF003)|((A&0xC)>>2);
if((A&0xF000)==0xA000) if((A&0xF000)==0xA000)
ROM_BANK8(0xA000,V); ROM_BANK8(0xA000,V);
@ -38,7 +49,10 @@ static DECLFW(Mapper25_write)
K4buf[x]&=(0xF0)>>((A&2)<<1); K4buf[x]&=(0xF0)>>((A&2)<<1);
K4buf[x]|=(V&0xF)<<((A&2)<<1); K4buf[x]|=(V&0xF)<<((A&2)<<1);
VROM_BANK1(x<<10,K4buf[x]); if(weirdo)
weirdo--;
else
VROM_BANK1(x<<10,K4buf[x]);
} }
else if((A&0xF000)==0x8000) else if((A&0xF000)==0x8000)
{ {