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Re: [Xen-devel] Xen & Transmeta (from xen-users)

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: "Carl Holtje ;021;vcsg6;" <cwh0803@xxxxxxxxxx>
  • Date: Tue, 24 May 2005 11:31:24 -0400 (EDT)
  • Delivery-date: Tue, 24 May 2005 15:30:46 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On Tue, 24 May 2005, Keir Fraser wrote:

> On 24 May 2005, at 16:20, Carl Holtje ;021;vcsg6; wrote:
> > Any suggestions/ideas on how to track this down?
> >
> > Thanks!
> Connect a null modem serial cable and outb printable characters to
> 0x3f8 at various points in the assembly code (immediately followed by
> an infinite loop, or characters may not be emitted on the serial line
> before the system crashes). As you say it crashes pretty early, so you
> won't have to move the debug output around very much to work out which
> instruction is causing the crash.

This is an OQO, so I don't have the facilities to plug a serial cable
into... can I do anything over USB at this level?



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