RE: [microblaze-uclinux] external ram not executing code

["Kristian Chaplin" <kristian.chaplin@xxxxxxxxxx>]

Hello Wade,

I'm not quite sure what you are seeing here.

I assume if the hardware is SRAM, you are using the OPB_EMC.

What do you mean by it only being 32-bits wide for data?  Can you write
8, 
16 and 32-bit data values into and out of it?

As the ram is available on the data and instruction side of the bus, you
can
 perform some memory test functions.  Please tell us what you find.

Also it might be useful to paste in the MHS file for the system, so we
can 
check the EMC parameters.

Best regards

Kris


--
------------------------------------------------------------------------
----
/ /\/ Kris Chaplin
\ \   Applications Engineer - Embedded Processors
/ /   Xilinx Europe
\_\/\ +44 (0)870-7356-563

-----Original Message-----
From: owner-microblaze-uclinux@itee.uq.edu.au
[mailto:owner-microblaze-uclinux@itee.uq.edu.au] On Behalf Of
Wade.Maxfield@precision-es.com
Sent: 19 May 2005 16:53
To: microblaze-uclinux@itee.uq.edu.au
Subject: [microblaze-uclinux] external ram not executing code


    My hardware guy is having problems getting external Static Ram to
execute code for the Microblaze.  Internal block ram does fine.

    As I understand it now, the ram is enabled both for program space
and
data space.  However, it appears to only be 32 bits wide for data
(although
it is 2 16 bit wide ram devices).

    Any suggestions what to look for?

thanks!
wade


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