From 339a2f38c53a1c6cdf98b872c17a44f4eb0da44c Mon Sep 17 00:00:00 2001
From: pagefault <>
Date: Fri, 25 Mar 2005 19:35:25 +0000
Subject: [PATCH] Mode 4 offset change overflow fix in rendering code

---
 zsnes/src/video/newgfx16.mac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/zsnes/src/video/newgfx16.mac b/zsnes/src/video/newgfx16.mac
index 787053c3..c780bb2d 100644
--- a/zsnes/src/video/newgfx16.mac
+++ b/zsnes/src/video/newgfx16.mac
@@ -3300,7 +3300,10 @@ EXTSYM osm2dis
     je near .offsetm16x16
     xor edx,edx
     mov dx,[BG3SYl+ebx*2]
+    test dx,08h
+    jz .overflow
     and dx,0F8h
+.overflow
     shr edx,3
     shl edx,6
     xor eax,eax