From 4fc17ab99a66c0ff2ebf66f3d6af870678e39c28 Mon Sep 17 00:00:00 2001
From: geijoenr <enric.geijo@gmail.com>
Date: Sun, 4 Jan 2015 21:46:58 +0100
Subject: [PATCH] vdp2: fix scroll_up

---
 Kernel/dev/vdp2.s | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kernel/dev/vdp2.s b/Kernel/dev/vdp2.s
index 60e68685..a09cdddf 100644
--- a/Kernel/dev/vdp2.s
+++ b/Kernel/dev/vdp2.s
@@ -173,7 +173,6 @@ upline:
 	    ret
 
 _scroll_up:
-	    ret
 	    ld b, #23
 	    ld de, #80		; start of second line
 downline:   push bc
@@ -190,6 +189,7 @@ downline:   push bc
 	    add hl, de
 	    out (c), l
 	    out (c), h
+	    dec c
 	    ld hl, #scrollbuf
 	    ld b, #80
 	    otir
-- 
2.34.1