From: Robin Gilks <robin.gilks@tait•co.nz>
To: ppc embedded list <linuxppc-embedded@ozlabs•org>
Subject: Exception handling on mpc8xx cores
Date: Wed, 08 Dec 2004 17:15:11 +1300 [thread overview]
Message-ID: <41B67FCF.6040100@tait.co.nz> (raw)
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?
Cheers
--
Robin Gilks
Senior Design Engineer Phone: (+64)(3) 357 1569
Tait Electronics Fax : (+64)(3) 359 4632
PO Box 1645 Christchurch Email : robin.gilks@tait•co.nz
New Zealand
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next reply other threads:[~2004-12-08 4:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-08 4:15 Robin Gilks [this message]
2004-12-08 9:38 ` Exception handling on mpc8xx cores Jaap-Jan Boor
2004-12-08 13:06 ` Mark Chambers
2004-12-08 20:32 ` Robin Gilks
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