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Source/emulator.c

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+// emulator.c
+
+// SplitBit Emulator
+// Small 8-Bit Harvard Architecture CPU
+// Written by Anachronaut
+// 10/15/2024
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include "cpu.h"
+#include "utility.h"
+#include <string.h>
+#include <getopt.h>
+
+uint8_t debugEnable = 0;
+int cycleCount = 0;
+char *programFile = NULL;
+
+// Memory Banks:
+uint8_t Program[0x10000], Data[0x10000];
+
+int main (int argc, char *argv[]) {
+    uint8_t test = parseOptions(argc, argv);
+    if (test == 1){
+        // Enable the Debug Mode.
+        debugEnable = 1;
+    } else if (test == 2){
+        // User asked for help or gave a bad option, don't execute.
+        return 1;
+    }
+    if (optind < argc) {
+        programFile = argv[optind];
+        optind++;
+    } else {
+        fprintf(stderr, "Error: No binary file specified.\n");
+        printHelp(argv[0]);
+        return 1;
+    }
+    if (optind < argc) {
+        fprintf(stderr, "Error: Unexpected argument: %s\n", argv[optind]);
+        return 1;
+    }
+    if (loadFile(programFile, Program, Data)) {
+        fprintf(stderr, "Error: Couldn't read file: %s\n", programFile);
+        return 1;
+    }
+    CPURegisters cpu;
+    initializeCPU(&cpu, Program, Data);
+    while (!(cpu.Status & 0x80)) {
+        if (debugEnable) {
+            getchar();
+            printRegisters(&cpu, Program, Data);
+        }
+
+        executeOperation(cpu.Program[cpu.ProgramCounter], &cpu);
+        cpu.ProgramCounter++;
+        cycleCount++;
+    }
+    printf("Execution halted after %u cycles.\n", cycleCount);
+}