Date: Sat, 1 Mar 2003 16:41:29 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Giorgos Keramidas <keramida@FreeBSD.ORG> 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> In-Reply-To: <200303010056.h210uKWa015510@repoman.freebsd.org> References: <200303010056.h210uKWa015510@repoman.freebsd.org>
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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
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