From fb6045aef14ca17865204c6a1a31a6659eba9a36 Mon Sep 17 00:00:00 2001
From: Sjoerd van der Berg <harekiet@users.sourceforge.net>
Date: Sat, 22 Nov 2003 17:03:49 +0000
Subject: [PATCH] Fix loading a new font always setting vga range to
 b800-bffff, should fix monochromo text mode

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1459
---
 src/ints/int10_memory.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/ints/int10_memory.cpp b/src/ints/int10_memory.cpp
index 7d42c366..e0358ae3 100644
--- a/src/ints/int10_memory.cpp
+++ b/src/ints/int10_memory.cpp
@@ -47,15 +47,17 @@ static Bit16u map_offset[8]={
 void INT10_LoadFont(PhysPt font,bool reload,Bitu count,Bitu offset,Bitu map,Bitu height) {
 	PhysPt where=PhysMake(0xa000,map_offset[map & 0x7]+offset*32);
 	IO_Write(0x3c4,0x2);IO_Write(0x3c5,0x4);	//Enable plane 2
-	IO_Write(0x3ce,0x6);IO_Write(0x3cf,0x0);	//Disable odd/even and a0000 adressing
+	IO_Write(0x3ce,0x6);Bitu old_6=IO_Read(0x3cf);
+	IO_Write(0x3cf,0x0);	//Disable odd/even and a0000 adressing
 	for (Bitu i=0;i<count;i++) {
 		MEM_BlockCopy(where,font,height);
 		where+=32;
 		font+=height;
 	}
-	IO_Write(0x3c4,0x2);IO_Write(0x3c5,0xf);	//Enable all planes
+	IO_Write(0x3c4,0x2);
+	IO_Write(0x3c5,0xf);	//Enable all planes
 	IO_Write(0x3ce,0x6);
-	IO_Write(0x3cf,0x0e);	//odd/even and b8000 adressing
+	IO_Write(0x3cf,old_6);	//odd/even and b8000 adressing
 	/* Reload tables and registers with new values based on this height */
 	if (reload) {
 		//Max scanline