1 files changed, 6 insertions, 2 deletions
diff --git a/nandgame/Vcomputer__main.cpp b/nandgame/Vcomputer__main.cpp
index 79b1ef7..2bf6117 100644
--- a/nandgame/Vcomputer__main.cpp
+++ b/nandgame/Vcomputer__main.cpp
@@ -104,7 +104,7 @@ int main(int argc, char **argv, char **) {
     curs_set(0);
 #endif
 
-    while (VL_LIKELY(!contextp->gotFinish()) && i < 100) {
+    while (VL_LIKELY(!contextp->gotFinish()) && i < 500) {
         //topp->computer->clk_in = ~topp->computer->clk_in;
         topp->clk_in = !topp->clk_in;
 
@@ -113,10 +113,14 @@ int main(int argc, char **argv, char **) {
 
         draw_ui(topp, i);
 
+        // both bits 14 and 15 need to be set
+        uint16_t opcode = topp->computer->PC_content_int;
+        if ((opcode & 0xC000) == 0x8000)
+          break;
+
         // Advance time
         contextp->timeInc(1);
         i++;
-
     }
 
     PRINT_ME(10 + NCUR_OFFSET, 10, "Simulation finished.");