From owner-cvs-all Fri Feb 28 21:41:34 2003 Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E6F7337B401; Fri, 28 Feb 2003 21:41:32 -0800 (PST) Received: from cirb503493.alcatel.com.au (c18609.belrs1.nsw.optusnet.com.au [210.49.80.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2E7F143FAF; Fri, 28 Feb 2003 21:41:31 -0800 (PST) (envelope-from peterjeremy@optushome.com.au) Received: from cirb503493.alcatel.com.au (localhost.alcatel.com.au [127.0.0.1]) by cirb503493.alcatel.com.au (8.12.5/8.12.5) with ESMTP id h215fTLZ086129; Sat, 1 Mar 2003 16:41:29 +1100 (EST) (envelope-from jeremyp@cirb503493.alcatel.com.au) Received: (from jeremyp@localhost) by cirb503493.alcatel.com.au (8.12.6/8.12.5/Submit) id h215fTAM086128; Sat, 1 Mar 2003 16:41:29 +1100 (EST) Date: Sat, 1 Mar 2003 16:41:29 +1100 From: Peter Jeremy To: Giorgos Keramidas Cc: doc-committers@FreeBSD.ORG, cvs-doc@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: doc/en_US.ISO8859-1/books/developers-handbook/boot chapter.sgml Message-ID: <20030301054129.GE62020@cirb503493.alcatel.com.au> References: <200303010056.h210uKWa015510@repoman.freebsd.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200303010056.h210uKWa015510@repoman.freebsd.org> User-Agent: Mutt/1.4i Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Fri, Feb 28, 2003 at 04:56:20PM -0800, Giorgos Keramidas wrote: >keramida 2003/02/28 16:56:20 PST > > FreeBSD doc repository > > Modified files: > en_US.ISO8859-1/books/developers-handbook/boot chapter.sgml > Log: > The initial value of the instruction pointer after processor reset is > not 0xffffff00 but 0xfffffff0. Verified by checking section 10.1 of > "Intel 80386 Reference Programmer's Manual" at: > http://people.freebsd.org/~jhb/386htm/s10_01.htm Actually, that reference states that EIP is 0x0000fff0, with a CS of 0x000 (though the latter should read 0xf000 according to both my i486 PRM manual and reality). The 486 manual goes on to specify that the invisible part of CS specifies a base of 0xffff0000 and a limit of 0xffff. This does give a physical address of 0xfffffff0. Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message