Fix the two highest bits on undefined TIA reads.

6502ts · Jan 9, 2018 · 3e50525 · 3e50525
1 parent 2d6cd36
commit 3e50525
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/machine/stella/tia/Tia.ts b/src/machine/stella/tia/Tia.ts
@@ -287,7 +287,7 @@ class Tia implements VideoOutputInterface {
                 break;
 
             default:
-                result = lastDataBusValue;
+                result = 0;
                 break;
         }