ApiDoc update to include cop0 class and cause register.

apidoc.htm

@@ -108,6 +108,7 @@ span.tag2 {
 		<a href="#ugpr">ugpr</a><br>
 		<a href="#fpr">fpr</a><br>
 		<a href="#dfpr">dfpr</a><br>
+		<a href="#cop0">cop0</a><br>
 		<a href="#Server">Server</a><br>
 		<a href="#Socket">Socket</a><br>
 		<a href="#AddressRange">AddressRange</a><br>
@@ -773,6 +774,16 @@ events.onexec(0x802CB1C0, function()
 	</div>
 </div>
 
+<div class="panel" id="cop0">
+	<div class="classname">cop0</div>
+	<div class="property">
+		<div class="propertyname">cop0.cause</div>
+		<div class="propertydesc">
+			Variable representing the Cause register. Updates interrupts when written.
+		</div>
+	</div>
+</div>
+
 
 <div class="panel" id="Server">
 	<div class="classname">Server</div>