add computer launcher

1 files changed, 116 insertions, 0 deletions

diff --git a/nandgame/Vcomputer__main.cpp b/nandgame/Vcomputer__main.cpp
new file mode 100644
index 0000000..101d2fa
--- /dev/null
+++ b/nandgame/Vcomputer__main.cpp
@@ -0,0 +1,116 @@
+// Verilated -*- C++ -*-
+// DESCRIPTION: Verilator output: main() simulation loop, created with --main
+
+// Edited and completed to view contents.
+#include "Vcomputer___024root.h"
+#include "Vcomputer_computer.h"
+#include "Vcomputer_my_mem__D10_DB10000.h"
+#include "verilated.h"
+#include "Vcomputer.h"
+#include <cinttypes>
+#include <cstdint>
+#include <cstdio>
+#include <sched.h>
+
+//======================
+
+int main(int argc, char** argv, char**) {
+    // Setup context, defaults, and parse command line
+    Verilated::debug(0);
+    const std::unique_ptr<VerilatedContext> contextp{new VerilatedContext};
+    contextp->threads(1);
+    contextp->commandArgs(argc, argv);
+
+    // Construct the Verilated model, from Vtop.h generated from Verilating
+    const std::unique_ptr<Vcomputer> topp{new Vcomputer{contextp.get(), ""}};
+
+    if (argc != 2) {
+        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;
+    FILE* f = fopen(argv[1], "rb");
+    if (!f) {
+        fprintf(stderr, "Program file %.20s not found.\n", argv[1]);
+        exit(-1);
+    }
+    fseek(f, 0, SEEK_END);
+    long fpos = ftell(f);
+    fseek(f, 0, SEEK_SET);
+    size_t bytes_read = fread(
+        topp->computer->ROM->r_datastore.m_storage,
+        2,
+        fpos/2,
+        f
+    );
+
+    if (bytes_read * 2 != fpos) {
+        fputs("Couldn't read program file completely.", stderr);
+        exit(-1);
+    }
+
+    while (VL_LIKELY(!contextp->gotFinish()) && i < 100) {
+        //topp->computer->clk_in = ~topp->computer->clk_in;
+        topp->clk_in = !topp->clk_in;
+        //uint16_t opcode = (topp->computer->PC_content_int & 0xff) << 8 | (topp->computer->PC_content_int >> 8);
+        uint16_t opcode = topp->computer->PC_content_int;
+        printf(
+            "CLK1: %4d, CLK2: %4d, PC: @0x%04X, INS: 0x%04X\n",
+            topp->clk_in,
+            topp->computer->clk_in,
+            topp->computer->PC_addr_int,
+            opcode
+        );
+        // This is fucking dirty
+        {
+            char command[128];
+            snprintf(command, sizeof(command) - 1, "python3 ../assembler/disas_ins.py %04X", opcode);
+            char buffer[256];
+            FILE* pipe = popen(command, "r");
+            if (!pipe) {
+                perror("popen failed");
+                exit(-1);
+            }
+
+            if (fgets(buffer, sizeof(buffer), pipe) != NULL) {
+                printf("%s", buffer);
+            }
+
+            (void) pclose(pipe);
+        }
+
+        printf(
+            "  A: 0x%04X, D: 0x%04X, M: 0x%04X\n",
+            topp->computer->reg_A_int,
+            topp->computer->reg_D_int,
+            topp->computer->reg_pA_int
+        );
+        printf(
+            "  A: %5" PRId16 ", D: %5" PRId16 ", M: %5" PRId16 "\n",
+            topp->computer->reg_A_int,
+            topp->computer->reg_D_int,
+            topp->computer->reg_pA_int
+        );
+        // Evaluate model
+        topp->eval();
+        // Advance time
+        contextp->timeInc(1);
+        i++;
+    }
+    puts("Simulation finished");
+
+    if (VL_LIKELY(!contextp->gotFinish())) {
+        VL_DEBUG_IF(VL_PRINTF("+ Exiting without $finish; no events left\n"););
+    }
+
+    // Execute 'final' processes
+    topp->final();
+
+    // Print statistical summary report
+    //contextp->statsPrintSummary();
+
+    return 0;
+}