fixed reset fan-out

driver/opae/vlsim/opae_sim.cpp

@@ -8,7 +8,7 @@
 #define CCI_RQ_SIZE 16
 #define CCI_WQ_SIZE 16
 
-#define RESET_DELAY 1
+#define RESET_DELAY 2
 
 #define ENABLE_DRAM_STALLS
 #define DRAM_LATENCY 24
@@ -38,8 +38,10 @@ opae_sim::opae_sim() {
   trace_->open("trace.vcd");
 #endif
 
+  // reset the device
   this->reset();
 
+  // launch execution thread
   stop_ = false;
   future_ = std::async(std::launch::async, [&]{                   
       while (!stop_) {
@@ -140,7 +142,15 @@ void opae_sim::reset() {
 
   vortex_afu_->reset = 0;
 
-  reset_time_ = timestamp; 
+  for (int i = 0; i < RESET_DELAY; ++i) {
+    vortex_afu_->clk = 0;
+    this->eval();
+    vortex_afu_->clk = 1;
+    this->eval();
+  }  
+  
+  // Turn on assertion after reset
+  Verilated::assertOn(true);
 }
 
 void opae_sim::step() {
@@ -154,11 +164,6 @@ void opae_sim::step() {
   vortex_afu_->clk = 1;
   this->eval();
 
-  if ((timestamp - reset_time_) == (RESET_DELAY*2)) {
-    // Turn on assertion after reset
-    Verilated::assertOn(true);
-  }
-
 #ifndef NDEBUG
   fflush(stdout);
 #endif