rainbow: fixed PRG RAM 4K mode issue

BrokeStudio · Dec 18, 2023 · d291059 · d291059
1 parent 04d1a8b
commit d291059
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Core/NES/Mappers/Homebrew/Rainbow.h b/Core/NES/Mappers/Homebrew/Rainbow.h
@@ -1225,7 +1225,7 @@ class Rainbow : public BaseMapper
 					break;
 				case PRG_RAM_MODE_1:
 					// 2 x 4K
-					prgIdx = ((addr >> 12) & 0x07) - 6;
+					prgIdx = ((addr >> 12) & 0x07) - 5;
 					if(((_prg[prgIdx] & 0x8000) >> 14) != 0)
 						return WritePrgRam(addr, value); // FPGA_RAM or WRAM