Mapper 432: Small mistake regarding DIP clear bit

src/boards/432.c

@@ -44,7 +44,7 @@ static DECLFR(M432Read) {
 
 static DECLFW(M432Write) {
 	EXPREGS[A & 1] = V;
-	if (~A &1 && ~V &1) EXPREGS[1] =0; /* Writing 0 to register 0 clears register 1 */
+	if (~A &1 && ~V &1) EXPREGS[1] &=~0x20; /* Writing 0 to register 0 clears register 1's DIP bit */
 	FixMMC3PRG(MMC3_cmd);
 	FixMMC3CHR(MMC3_cmd);
 }