Date: Tue, 11 Apr 2006 18:03:25 -0400 From: John Baldwin <jhb@freebsd.org> To: Maxim Sobolev <sobomax@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/boot/i386/cdboot cdboot.s Message-ID: <200604111803.27889.jhb@freebsd.org> In-Reply-To: <443C19A9.1000108@FreeBSD.org> References: <200604110439.k3B4dTOD072774@repoman.freebsd.org> <200604111358.41929.jhb@freebsd.org> <443C19A9.1000108@FreeBSD.org>
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On Tuesday 11 April 2006 17:03, Maxim Sobolev wrote: > John Baldwin wrote: > > On Tuesday 11 April 2006 10:34, Maxim Sobolev wrote: > >> boo1 does the same - timeout loop. My small research seemingly suggests > >> that doing A20 via the BIOS is not very reliable and may not work on all > >> machines. > > > > Can you test a patch for pxeboot? It looks to be the one other place that > > goes near the A20 line. > > > > http://www.FreeBSD.org/~jhb/patches/pxe_a20.patch > > Done. Returning to the subject, loader's version of A20-enabling routine > suffers from the very same problem (libi386/gatea20.c), but luckily we > don't use this routing in the loader at all. I suspect that it relies on > A20 being enabled by previous boot stages. Did you test it for the non-legacy case as well? :-P I already took care of the loader's A20 hack. :) -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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