From owner-freebsd-hackers Wed Sep 2 16:49:05 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA00486 for freebsd-hackers-outgoing; Wed, 2 Sep 1998 16:49:05 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from dingo.cdrom.com (dingo.cdrom.com [204.216.28.145]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id QAA00481 for ; Wed, 2 Sep 1998 16:49:04 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (localhost.cdrom.com [127.0.0.1]) by dingo.cdrom.com (8.9.1/8.8.8) with ESMTP id QAA00897; Wed, 2 Sep 1998 16:45:37 GMT (envelope-from mike@dingo.cdrom.com) Message-Id: <199809021645.QAA00897@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Wee Teck Ng cc: freebsd-hackers@FreeBSD.ORG Subject: Re: switching to real-address mode In-reply-to: Your message of "Wed, 02 Sep 1998 19:20:00 -0400." <199809022320.TAA01630@singapore.eecs.umich.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 02 Sep 1998 16:45:37 +0000 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > i'm trying to switch to real-address mode from protected mode in > the kernel (freebsd 2.2.7), but without success. i had followed > the instructions in the intel manual (p8-14 of system prog guide), > but my code always hung after clearing PE flag in CR0. i would > appreciate comments from anyone who have done this before. You can't do this without throwing most of the kernel away, and you probably don't want to do that. What are you actually trying to do? -- \\ 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. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message