LOAD and BRANCH instructions

src/main.rs

@@ -5,6 +5,11 @@ use machine::Machine;
 
 fn main() {
     let mut m = Machine::_init_machine();
-    m.instructions[0] = 0x37;
-    Machine::one_instruction(&mut m);
+    m.main_memory[4] = 43;
+    m.main_memory[5] = 150;
+    let a : u8 = 128;
+    let b : i8 = a as i8;
+    let c : u8 = b as u8;
+    println!("aaa {}", c);
+    println!("read_memory : {}", Machine::read_memory(&mut m, 2, 4));
 }