Defined mem_start

8086_sim/sim86.cpp

@@ -49,6 +49,7 @@ int main(int argc, char *argv[]) {
   instruction_table table;
   Sim86_Get8086InstructionTable(&table);
 
+  u32 mem_start = size + 1;
   u32 offset = 0;
 
   bool accessed_registers[REGISTER_COUNT] = {false};