Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!philmtl!ray
From: ray@philmtl.philips.ca (Raymond Dunn)
Newsgroups: comp.sys.ibm.pc
Subject: DEBUG bug
Message-ID: <514@philmtl.philips.ca>
Date: 18 May 89 21:12:35 GMT
Reply-To: ray@philmtl.UUCP (Raymond Dunn)
Organization: Philips Electronics Ltd. -  St. Laurent  P.Q., Canada
Lines: 14

Go into DEBUG and enter and *trace* through the following instructions with
DEBUG on an 80286 or 80386 based system:

           MOV   BX,FFFF
           MOV   AL,[BX]

In trying to display the data contents DEBUG accesses a *word* and causes a
segment overflow trap which hangs the machine!

-- 
Ray Dunn.                    | UUCP: ..!uunet!philmtl!ray
Philips Electronics Ltd.     | TEL : (514) 744-8200  Ext: 2347
600 Dr Frederik Philips Blvd | FAX : (514) 744-6455
St Laurent. Quebec.  H4M 2S9 | TLX : 05-824090