vrc2: only support V\H miorring. Allegedly fixes wai wai world issue

TASEmulators · Apr 5, 2016 · ef544cd9aba733c20350731f718fdd46edf9fdd1 · ef544cd
1 parent ec787d0
commit ef544cd9aba733c20350731f718fdd46edf9fdd1
Showing with 1 addition and 1 deletion.

+1 −1 BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/VRC2_4.cs
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/VRC2_4.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/VRC2_4.cs
@@ -302,7 +302,7 @@ public override void WritePRG(int addr, byte value)
 
 				case 0x1000: //$9000
 				case 0x1001: //$9001
-					switch (value & 3)
+					switch (value & (type - 1)) // VRC2 only supports V, H, and not A, B
 					{
 						case 0: SetMirrorType(NES.NESBoardBase.EMirrorType.Vertical); break;
 						case 1: SetMirrorType(NES.NESBoardBase.EMirrorType.Horizontal); break;