From 448fc3f0610ca21eb82182da463e3e451a34a66a Mon Sep 17 00:00:00 2001
From: Andrew Keeton <andrewrkeeton@gmail.com>
Date: Thu, 13 Nov 2014 18:52:14 -0500
Subject: [PATCH] Add BVC to execute_instruction().

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

diff --git a/src/machine.rs b/src/machine.rs
index cc12882..e36093c 100644
--- a/src/machine.rs
+++ b/src/machine.rs
@@ -169,6 +169,12 @@ impl Machine {
                 self.branch_if_overflow_clear(addr);
             }
 
+            (instruction::BVS, instruction::UseRelative(rel)) => {
+                let addr = self.registers.program_counter
+                         + AddressDiff(rel as i32);
+                self.branch_if_overflow_set(addr);
+            }
+
             (instruction::CLC, instruction::UseImplied) => {
                 self.registers.status.and(!PS_CARRY);
             }