Experimental Physics and Industrial Control System
We also use the Petra MVME-162s at the Sloan Digital Sky Survey,
with the BSP mod Andrew mentioned, and have experienced no
problems.
Andrew Johnson wrote:
>
> Paul Sichta wrote:
> > I plan to buy a MVME-177 from Motorola in order to have a
> > second spare CPU. They discontinued production of the model
> > MVME177-013 in August 2000, and now offer a replacement
> > based upon their Petra ASIC. The part number is now
> > MVME177P-64SE. Has anyone used the (new) Petra ASIC boards?
> > Are they swappable with the original MVME-177 boards?
>
> We use Petra versions of the MVME-162 and MVME-172, which are completely
> plug compatible, although they do look a bit different to the older boards.
>
> > Wind River doesn't make mention of a separate bsp for the
> > new MVME177P .
>
> The same BSP works with both versions, although there is a one-line change
> that you should probably make (it's not clear whether it's still needed as
> it was a workaround for a bug in the Petra chip that might have been fixed
> in later versions, but as the modified code works with pre-Petra boards
> anyway it's worth making it just in case):
>
> In the sys596IntDisable() routine (sysLib.c), replace the code
> *PCC2_LANC_IRQ_CR &= ~LANC_IRQ_CR_IEN;
> with
> *PCC2_LANC_IRQ_CR &= ~ABORT_IRQ_LEVEL;
>
> Without this modification it is possible for a busy network to cause the
> network connection to become unreliable, although you might not notice it.
> I have an similar change in all my mv16x and mv17x BSPs, just to be safe.
>
> - Andrew
> --
> "Life is what happens while you're busy making other plans." - John Lennon
--
Peregrine M. McGehee [email protected] (505) 667-3273
Sloan Digital Sky Survey / Spallation Neutron Source
MS H820, Los Alamos National Laboratory, Los Alamos, NM 87545
- References:
- old/new MVME-177 compatability Paul Sichta
- Re: old/new MVME-177 compatability Andrew Johnson
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