From f7b841d05a6a249df1f36a2a3ddec7c89fe65142 Mon Sep 17 00:00:00 2001
From: Ulf Wohlers <finsterr@users.sourceforge.net>
Date: Thu, 10 Apr 2003 15:43:19 +0000
Subject: [PATCH] fixed bug in bt group

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@902
---
 src/cpu/core_16/prefix_of.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/cpu/core_16/prefix_of.h b/src/cpu/core_16/prefix_of.h
index 039f6608..67324dd0 100644
--- a/src/cpu/core_16/prefix_of.h
+++ b/src/cpu/core_16/prefix_of.h
@@ -309,9 +309,9 @@ switch(Fetchb()) {
 	case 0xba:												/* GRP8 Ew,Ib */
 		{
 			GetRM;
-			Bit16u mask=1 << (Fetchb() & 15);
 			if (rm >= 0xc0 ) {
 				GetEArw;
+				Bit16u mask=1 << (Fetchb() & 15);
 				flags.cf=(*earw & mask)>0;
 				switch (rm & 0x38) {
 				case 0x20:									/* BT */
@@ -330,6 +330,7 @@ switch(Fetchb()) {
 				}
 			} else {
 				GetEAa;Bit16u old=LoadMw(eaa);
+				Bit16u mask=1 << (Fetchb() & 15);
 				flags.cf=(old & mask)>0;
 				switch (rm & 0x38) {
 				case 0x20:									/* BT */