From 7de24ebf3323fc6c33fd5ce0f58b58fa4093e61c Mon Sep 17 00:00:00 2001
From: Preston Skupinski <skupinsk@cse.msu.edu>
Date: Sun, 15 May 2011 20:05:31 -0400
Subject: [PATCH] added COP

---
 cpu.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/cpu.js b/cpu.js
index c4f53c2..7b51b5d 100644
--- a/cpu.js
+++ b/cpu.js
@@ -162,7 +162,8 @@ function CPU_65816() {
                       0xf4 : PEA, 0xd4 : PEI, 0x8b : PHB, 0xab : PLB,
                       0x4b : PHK, 0x0b : PHD, 0x2b : PLD, 0x62 : PER,
                       0x20 : JSR, 0x60 : RTS, 0x22 : JSL, 0x6b : RTL,
-                      0x54 : MVN, 0x44 : MVP, 0x00 : BRK, 0x40 : RTI };
+                      0x54 : MVN, 0x44 : MVP, 0x00 : BRK, 0x40 : RTI,
+                      0x02 : COP };
 
   /**
    * Take a raw hex string representing the program and execute it.
@@ -342,6 +343,15 @@ var MMU = {
   }
 };
 
+var COP = {
+  bytes_required:function() {
+    return 2;
+  },
+  execute:function(cpu) {
+    cpu.interrupt = 4;
+  }
+};
+
 var BRK = {
   bytes_required:function() {
     return 2;