Cheats: Implement C0 command (activate codes iff equal)

src/core/cheats.cpp

@@ -921,6 +921,16 @@ void CheatCode::Apply() const
       }
       break;
 
+      case InstructionCode::ExitIfNotEqual16:
+      {
+        u16 value = DoMemoryRead<u16>(inst.address);
+        if (value == inst.value16)
+          index++;
+        else
+          index = count;
+      }
+      break;
+
       case InstructionCode::Slide:
       {
         if ((index + 1) >= instructions.size())

src/core/cheats.h

@@ -30,6 +30,7 @@ struct CheatCode
     Decrement16 = 0x11,
     Increment8 = 0x20,
     Decrement8 = 0x21,
+    ExitIfNotEqual16 = 0xC0,
     CompareEqual16 = 0xD0,
     CompareNotEqual16 = 0xD1,
     CompareLess16 = 0xD2,