From: Jaap-Jan Boor <jjboor@aimsys.nl>
To: robin.gilks@tait.co.nz
Cc: ppc embedded list <linuxppc-embedded@ozlabs.org>
Subject: Re: Exception handling on mpc8xx cores
Date: Wed, 08 Dec 2004 10:38:30 +0100 [thread overview]
Message-ID: <1102498710.414.98.camel@linpc003.aimsys.nl> (raw)
In-Reply-To: <41B67FCF.6040100@tait.co.nz>
On Wed, 2004-12-08 at 05:15, Robin Gilks wrote:
> Greetings
>
> Any Freescale lurkers out there?
>
> The mpc866 manual implies that if the internal core times out an
> external Transfer Acknowledge bus signal (by exerting the internally
> generated Transfer Error Acknowledge signal) an exception is generated.
>
> I've tried extending the external TA signal well beyond 2040 clock
> cycles the maximum timeout allows and I see the busses start up again
> (indicationg that they are no longer waiting) but I don't see anything
> on TEA and I don't get an exception thrown.
>
> Any clues? Manual error?, silicon error?, my brain error?
Did you enable the bus monitor in the SYPCR register?
Jaap-Jan
>
> Cheers
--
J.G.J. Boor Anton Philipsweg 1
Software Engineer 1223 KZ Hilversum
AimSys bv tel. +31 35 689 1941
Postbus 2194, 1200 CD Hilversum mailto:jjboor@aimsys.nl
next prev parent reply other threads:[~2004-12-08 9:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-08 4:15 Exception handling on mpc8xx cores Robin Gilks
2004-12-08 9:38 ` Jaap-Jan Boor [this message]
2004-12-08 13:06 ` Mark Chambers
2004-12-08 20:32 ` Robin Gilks
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