From: Alan Cox <alan@linux.intel.com>
Date: Sun, 4 Jan 2015 21:03:52 +0000 (+0000)
Subject: vdp1: propogate fix from VDP2
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=ce45d2bb6016f7d725f23cda95dcf074b4e187d5;p=FUZIX.git

vdp1: propogate fix from VDP2
---

diff --git a/Kernel/dev/vdp1.s b/Kernel/dev/vdp1.s
index 9e79c67e..4fda20b0 100644
--- a/Kernel/dev/vdp1.s
+++ b/Kernel/dev/vdp1.s
@@ -139,7 +139,6 @@ upline:
 _scroll_up:
 		.endif
 scroll_up:
-	    ret
 	    ld b, #23
 	    ld de, #40		; start of second line
 downline:   push bc
@@ -156,6 +155,7 @@ downline:   push bc
 	    add hl, de
 	    out (c), l
 	    out (c), h
+	    dec c
 	    ld hl, #scrollbuf
 	    ld b, #0x40
 	    otir		; FIXME: is otir ok for MSX 1 ???