diff --git a/c64/kernal/ioinit.s b/c64/kernal/ioinit.s
index fd25f891..79c76dc4 100644
--- a/c64/kernal/ioinit.s
+++ b/c64/kernal/ioinit.s
@@ -9,4 +9,10 @@ ioinit:
 	LDA #$27
 	STA $01
 
+	;; Compute's Mapping the 64, p156
+	lda #$0e
+	sta $D020
+	lda #$06
+	sta $D021
+	
 	rts