add msbasic

src/rom.c

@@ -1,11 +1,29 @@
-#include "rom.h"
-
-#include "io.h"
-
-uint8_t rom[ROM_SIZE] = {0};
-
-void initRom(uint8_t *rom) {
-  /* Reset Vector */
-  rom[0xFFFC - ROM_BASE] = 0x00; // Lower byte base of ROM
-  rom[0xFFFD - ROM_BASE] = 0x04; // Upper byte of base of ROM
+#include "rom.h"
+
+#include "io.h"
+
+#include <stdio.h>
+
+uint8_t rom[ROM_SIZE] = {0};
+
+void initRom(uint8_t *rom) {
+  FILE *fp = fopen("/mnt/c/Users/llego/source/repos/6502PC/msbasic/tmp/kilian.bin", "rb");
+
+  if (!fp) {
+    perror("fopen");
+    return;
+  }
+
+  fread(rom, 1, ROM_SIZE, fp);
+  if (ferror(fp)) {
+    perror("fread");
+    fclose(fp);
+    return;
+  }
+
+  fclose(fp);
+
+  /* Reset Vector, BASIC at DF02 */
+  //rom[0xFFFC - ROM_BASE] = 0x02; // Lower byte base of ROM
+  //rom[0xFFFD - ROM_BASE] = 0xDF; // Upper byte of base of ROM
 }