From 8febc747889d3c9a40227da96c2663b26763b7e4 Mon Sep 17 00:00:00 2001
From: Andrew Keeton <andrewrkeeton@gmail.com>
Date: Thu, 6 Nov 2014 19:49:54 -0500
Subject: [PATCH] Add branch_if_equal().

---
 src/machine.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/machine.rs b/src/machine.rs
index aeee90b..d36b3e0 100644
--- a/src/machine.rs
+++ b/src/machine.rs
@@ -565,6 +565,12 @@ impl Machine {
         }
     }
 
+    fn branch_if_equal(&mut self, addr: Address) {
+        if self.registers.status.contains(PS_ZERO) {
+            self.registers.program_counter = addr;
+        }
+    }
+
     fn branch_if_minus(&mut self, addr: Address) {
         if self.registers.status.contains(PS_NEGATIVE) {
             self.registers.program_counter = addr;