From 7402690c0824f993a72c447c44e73a3de84b0cf5 Mon Sep 17 00:00:00 2001
From: zsknight <>
Date: Thu, 26 Apr 2001 06:13:55 +0000
Subject: [PATCH] Fixed a mode7 problem when center coordinates are negative.

---
 zsnes/src/video/mode7.mac   | 6 ++++--
 zsnes/src/video/mode716.mac | 2 ++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/zsnes/src/video/mode7.mac b/zsnes/src/video/mode7.mac
index bb1fa27f..19562b23 100644
--- a/zsnes/src/video/mode7.mac
+++ b/zsnes/src/video/mode7.mac
@@ -20,8 +20,6 @@
 
 
 
-
-
 %macro Mode7Calculate 0
     ; mode 7, ax = curyposition, dx = curxposition (left side)
     ; draw center map coordinates at (X0-bg1scrolx,Y0-bg1scroly) on screen
@@ -33,6 +31,7 @@
     test bx,0001000000000000b
     jz .nonega
     or bx,1110000000000000b    
+    or word[mode7X0],1110000000000000b    
 .nonega
     mov [.cxloc],bx
     mov bx,dx
@@ -54,6 +53,7 @@
     test bx,0001000000000000b
     jz .nonegd
     or bx,1110000000000000b
+    or word[mode7Y0],1110000000000000b    
 .nonegd
     sub word[.cyloc],bx
 
@@ -113,6 +113,7 @@
     test bx,0001000000000000b
     jz .nonega
     or bx,1110000000000000b    
+    or word[mode7X0],1110000000000000b    
 .nonega
     mov [.cxloc],bx
     mov bx,dx
@@ -134,6 +135,7 @@
     test bx,0001000000000000b
     jz .nonegd
     or bx,1110000000000000b
+    or word[mode7Y0],1110000000000000b    
 .nonegd
     add bx,bx
     sub word[.cyloc],bx
diff --git a/zsnes/src/video/mode716.mac b/zsnes/src/video/mode716.mac
index 17d18f4f..865494a1 100644
--- a/zsnes/src/video/mode716.mac
+++ b/zsnes/src/video/mode716.mac
@@ -109,6 +109,7 @@ EXTSYM pesimpng
     test bx,0001000000000000b
     jz .nonega
     or bx,1110000000000000b    
+    or word[mode7X0],1110000000000000b    
 .nonega
     mov [mcxloc],bx
     mov bx,dx
@@ -130,6 +131,7 @@ EXTSYM pesimpng
     test bx,0001000000000000b
     jz .nonegd
     or bx,1110000000000000b
+    or word[mode7Y0],1110000000000000b    
 .nonegd
     sub word[mcyloc],bx