From 529c1cc2496e24c6282c3fa9e0a45272b7f500b6 Mon Sep 17 00:00:00 2001
From: Julian Blake Kongslie
Date: Sun, 2 May 2021 16:58:46 -0700
Subject: Add a bunch of microcoded instructions.

This is a minimum viable PDP-8 that can print "Hello, world!" and halt.
---
 sim/main.cpp | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

(limited to 'sim/main.cpp')

diff --git a/sim/main.cpp b/sim/main.cpp
index f082464..cc1c596 100644
--- a/sim/main.cpp
+++ b/sim/main.cpp
@@ -5,6 +5,13 @@
 
 #include "Vtop.h"
 
+std::uint64_t phases = 0;
+
+double sc_time_stamp()
+{
+    return (double)phases / 2;
+}
+
 int main(int argc, const char *argv[])
 {
     Verilated::commandArgs(argc, argv);
@@ -21,31 +28,29 @@ int main(int argc, const char *argv[])
 
     std::cout << "*** RESET SEQUENCE ***\n";
 
-    std::uint64_t time = 0;
-
     top.native_clk = 0;
     top.reset_n = 0;
     top.eval();
-    vcd.dump(++time);
+    vcd.dump(++phases);
 
     top.native_clk = 1;
     top.eval();
-    vcd.dump(++time);
+    vcd.dump(++phases);
 
     top.native_clk = 0;
     top.reset_n = 1;
     top.eval();
-    vcd.dump(++time);
+    vcd.dump(++phases);
 
     std::cout << "*** MAIN LOOP ***\n";
 
-    for (unsigned int i = 0; i < 100000 && !Verilated::gotFinish(); ++i) {
+    for (unsigned int i = 0; i < 10000 && !Verilated::gotFinish(); ++i) {
         top.native_clk = 1;
         top.eval();
-        vcd.dump(++time);
+        vcd.dump(++phases);
         top.native_clk = 0;
         top.eval();
-        vcd.dump(++time);
+        vcd.dump(++phases);
     }
 
     std::cout << "\n";
-- 
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