Verilator.md

@@ -36,18 +36,18 @@ $ sudo apt-get install verilator
 #include "Vtop.h"
 
 // Set the clock speed of your processor.
-static constexpr size_t clock_Hz = 55000000;
+static constexpr std::size_t clock_Hz = 55000000;
 // UART baudrate
-static constexpr size_t uart_Hz = 115200;
+static constexpr std::size_t uart_Hz = 115200;
 // The number of CoreMark iterations is depend on clock speed.
 // Max: 30 seconds
-static constexpr size_t max_cycle = 30 * clock_Hz;
+static constexpr std::size_t max_cycle = 30 * clock_Hz;
 
-size_t timer_ps = 0;
+std::size_t timer_ps = 0;
 
 void uart_rx(unsigned int u) {
-    static size_t s = 0;
-    static size_t b = 0;
+    static std::size_t s = 0;
+    static std::size_t b = 0;
     static char c = 0;
     if( s == 0 && u == 0 ) {
         s = timer_ps;
@@ -56,7 +56,7 @@ void uart_rx(unsigned int u) {
     } else if( s != 0 && s + 1000000000000 / uart_Hz / 2 * (2*b+3) < timer_ps ) {
         c |= u << b;
         if( ++b == 8 ) {
-            putchar(c);
+            std::cout << c << std::flush;
             s = 0;
         }
     }
@@ -66,20 +66,17 @@ void uart_rx(unsigned int u) {
 int main() {
     Vtop top;
     top.sysclk = 0;
-    top.eval();
     top.sysclk = 1;
     top.eval();
     top.cpu_resetn = 0;
     top.eval();
-    top.sysclk = 0;
-    top.eval();
     top.sysclk = 1;
     top.eval();
     top.sysclk = 0;
     top.eval();
     top.cpu_resetn = 1;
 
-    for( size_t cycle = 0; cycle < max_cycle; ++cycle ) {
+    for( std::size_t cycle = 0; cycle < max_cycle; ++cycle ) {
         top.sysclk = 0;
         top.eval();
         top.sysclk = 1;