Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Fri, 19 Jun 2009 09:21:14 -0500

Hi Jean-Francois,

On Friday 19 June 2009 06:25:29 GOURNAY Jean-Francois wrote:
>
> Whenever a C program has a misbehaved pointer, which causes a
> memory-write outside the allocated data memory, we have a crash of the
> CPU which is absolutely understandable, but then, it is impossible to
> reboot the CPU. Both flash banks containing the initial bootload and the
> VxWorks boot are corrupted and the only solution is to send back the CPU
> to the retailer !!! We had experienced this with several CPUs (we are
> probably bad C programmers) and didn't get so far any explanation from
> our retailers or after sales services. We have VxWorks 6.5.

Does this board have write-protect jumpers for the Flash?  Most of the other 
MVME boards do, but I can't get to the hardware documentation for the 
MVME5500 right now on the Emerson website so I can't check that for myself.  
If it does they should at least be able to prevent the flash from getting 
corrupted when things go wrong.

HTH,

- Andrew
-- 
The best FOSS code is written to be read by other humans -- Harold Welte

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System