Stupid question:
Will load/store string/multiple cause a burst if i implement a test in asm?
On Tue, May 20, 2003 at 09:55:40PM +0200, Wolfgang Denk wrote:
In message 20030519220854.GA15969@zumanetworks.com you wrote:
Should this also be portable to the 8xx[F]ADS platforms?
Please note that there is also extensive POST code for MPC8xx systems, which includes an IMHO excellent memory test.
I am currently debugging UPM/memory problems, and a real memory test would be invaluable :)
It won't help much. Usually memory tests test just the memory _contents_ using read and write accesses, while 99% of all RAM problems happen in burst mode, i. e. while fetching instructions or while doing DMA. I have yet to see a RAM test that catches this reliably.
Best regards,
Wolfgang Denk
-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de Do not underestimate the value of print statements for debugging. Don't have aesthetic convulsions when using them, either.