Added IME flag and DI instruction

velllu · Sep 6, 2023 · 0b464e6 · 0b464e6
1 parent af1d57c
commit 0b464e6
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Showing 2 changed files with 8 additions and 0 deletions.
diff --git a/src/cpu.rs b/src/cpu.rs
@@ -275,6 +275,9 @@ impl GameBoy {
             0xAD => { self.xor_r(OneByteRegister::L); (1, 1) },
             0xAF => { self.xor_r(OneByteRegister::A); (1, 1) },
 
+            // Interrupt stuff
+            0xF3 => { self.flags.ime = true; (1, 1) },
+
             _ => panic!("Opcode {:x} not implemented yet", opcode),
         }
     }

diff --git a/src/flags.rs b/src/flags.rs
@@ -4,6 +4,10 @@ pub struct Flags {
     /// sets the zero flag
     pub zero: bool,
 
+    /// IME, standing for "Interrupt Master Enable" is basically a switch on whether
+    /// interrupts should be handled or not
+    pub ime: bool,
+
     // TODO: Document this other flags
     pub substraction: bool,
     pub half_carry: bool,
@@ -14,6 +18,7 @@ impl Flags {
     pub(crate) fn new() -> Self {
         Self {
             zero: false,
+            ime: false,
             substraction: false,
             half_carry: false,
             carry: false,