Added Display Update when VM halted via software instruction

ScottPiersall · Nov 6, 2020 · e08a57a · e08a57a
1 parent 3662e64
commit e08a57a
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/SIC Simulator/Form1.cs b/SIC Simulator/Form1.cs
@@ -253,6 +253,9 @@ private async Task RegRefreshAsync()
 
             String NextInstructionD;            
 
+
+            if ( this.SICVirtualMachine.PC >= 0)
+            {
             NextInstructionD = SICVirtualMachine.GetInstructionDescription(SICVirtualMachine.PC);
 
             String[] NextInstructionPieces;
@@ -263,6 +266,14 @@ private async Task RegRefreshAsync()
             lblNextInstruction.Text = NextInstructionPieces[0];
             lblNI_Description.Text = NextInstructionPieces[1];
             lblNextInstruction_Effect.Text = NextInstructionPieces[2];
+            } else
+            {
+                lblNextInstruction.Text = "Program Halted";
+                lblNI_Description.Text = "VM Halted by Software Instruction";
+                lblNextInstruction_Effect.Text = "VM Halted";
+            }
+
+
 
         }