print emulator state as hex

src/emulator/main.rs

@@ -95,11 +95,12 @@ fn set_register(register: Register, value: u8, state: &mut EmulatorState) {
 fn print_state(state: &EmulatorState) {
     // State
     println!("\nsp\tpc\tei");
-    println!("{}\t{}\t{}", state.sp, state.pc, state.ei);
+    println!("{:#06x}\t{:#06x}\t{}", state.sp, state.pc, state.ei);
 
     // Registers
     println!("\nB\tC\tD\tE\tH\tL\tA");
-    println!("{}\t{}\t{}\t{}\t{}\t{}\t{}", state.b, state.c, state.d, state.e, state.h, state.l, state.a);
+    println!("{:#04x}\t{:#04x}\t{:#04x}\t{:#04x}\t{:#04x}\t{:#04x}\t{:#04x}",
+             state.b, state.c, state.d, state.e, state.h, state.l, state.a);
 
     // Flags
     println!("\nz\ts\tp\tc");
@@ -129,11 +130,11 @@ fn main() {
         .expect("Provide a path to a ROM file to emulate as an argument");
     let file = fs::read(filename).expect("where file");
 
-    for i in 0..8192 {
+    for i in 0..(MEMORY_SIZE.min(file.len())) {
         state.memory[i] = file[i];
     }
 
-    while state.pc < 8192 {
+    while state.pc < MEMORY_SIZE as u16 {
         tick(&mut state);
     }
 

test

@@ -0,0 +1 @@
+ﾆdﾆ<05>