diff --git a/asminc/pet.inc b/asminc/pet.inc
index 524e83511..f685c00b8 100644
--- a/asminc/pet.inc
+++ b/asminc/pet.inc
@@ -7,3 +7,16 @@
 ; Zero page, Commodore stuff
 
 DEVNUM 	       	:= $D4 	    	; Device number
+
+
+
+; ---------------------------------------------------------------------------
+; I/O: 6522 VIA2
+
+VIA   	       	:= $E840
+VIA_PRB         := $E840
+VIA_PRA         := $E841
+VIA_DDRB      	:= $E842
+VIA_DDRA      	:= $E843
+
+