1 files changed, 3 insertions, 4 deletions
diff --git a/nandgame/cpp/Vcomputer__main.cpp b/nandgame/cpp/Vcomputer__main.cpp
index cc0f7c0..6908377 100644
--- a/nandgame/cpp/Vcomputer__main.cpp
+++ b/nandgame/cpp/Vcomputer__main.cpp
@@ -31,7 +31,7 @@ int main(int argc, char **argv, char **) {
     fprintf(stderr, "Usage: %.20s [filename]\n\n", argv[0]);
     exit(-1);
   }
-  int i = 0;
+
   puts("Start simulation.");
   // topp->computer->clk_in = 0;
   topp->clk_in = 0;
@@ -53,9 +53,8 @@ int main(int argc, char **argv, char **) {
 
   simpc_ui_init();
 
-  while (VL_LIKELY(!contextp->gotFinish()) && i < 500) {
-    // doesn't work.
-    // topp->computer->clk_in = ~topp->computer->clk_in;
+  while (VL_LIKELY(!contextp->gotFinish()) && contextp->time() < 500) {
+    auto i = contextp->time();
 
     if (i != 0 && (i % TICKS_PER_INS) == 0) {
       topp->clk_in = !topp->clk_in;