From owner-freebsd-emulation Mon Jan 19 04:26:21 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id EAA21736 for freebsd-emulation-outgoing; Mon, 19 Jan 1998 04:26:21 -0800 (PST) (envelope-from owner-freebsd-emulation@FreeBSD.ORG) Received: from word.smith.net.au (ppp7.portal.net.au [202.12.71.107]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id EAA21714 for ; Mon, 19 Jan 1998 04:26:08 -0800 (PST) (envelope-from mike@word.smith.net.au) Received: from word (localhost [127.0.0.1]) by word.smith.net.au (8.8.8/8.8.5) with ESMTP id WAA00514; Mon, 19 Jan 1998 22:48:52 +1030 (CST) Message-Id: <199801191218.WAA00514@word.smith.net.au> X-Mailer: exmh version 2.0zeta 7/24/97 To: Bruce Evans cc: gurney_j@resnet.uoregon.edu, mike@smith.net.au, emulation@FreeBSD.ORG, rhh@ct.picker.com, shmit@erols.com Subject: Re: DOSCMD: Problems w/ Quicken In-reply-to: Your message of "Mon, 19 Jan 1998 23:14:43 +1100." <199801191214.XAA12141@godzilla.zeta.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 19 Jan 1998 22:48:51 +1030 From: Mike Smith Sender: owner-freebsd-emulation@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > >Yeah, that's all fine, but what I *don't* understand is why it should > >be trapping as it does claiming that 'movw (%bx),%ax' is an illegal > >instruction. > > When %bx = 0xffff, it should cause exception 13 (general protection) > in real mode. IIRC, this is one of the main differences between 8086's > and later86's in real mode. A difference implies two different behaviours. A GPF is one, what is the other (presumably that taken by the 8086)? Would you guess that this might be a CPU-type detection fragment? -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\