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Hi all,
We are observing some weird behaviour of the Windows XP Device Manager and
of some of the PCI utilities in our big PCI system based on an industrial
chassis. The system incorporates a backplane with 4 PCI bridges (3x21152 +
1x21150), 4 Bittware Hammerhead DSP cards and 5 of our own cards (4 SPCI IF
cards and 1 SPCI Reference card). Each of the DSP cards carries its own 21154
bridge and we have a PMC behind each of those besides their own PCI
controller.
The problem we are seeing is that the Device Manager doesn't seem to
properly report assigned resources and some of the well known utilities fail to
find all the devices while others do. I also have to say that our own software
works fine.
My question is whether anyone knows what could be the problem that causes
some of the softwares fail to operate properly and especially the Windows XP own
Device Manager?
I made some screen shots of what the Device Manager shows, so that it would
be easier to understand what I mean when I say it does not properly work. They
can be seen at http://www.squarepeg.ca/spcidl.htm
Please note that on the memory resources display one of the 21154
bridges doesn't show anything behind it, although we know that there is another
4 memory BARs of the Hammerhead and 3 BARs of our PMC. On the IO resources
screenshot again there are only 3 PMC cards (DSP cards don't have BARs mapped
into the IO space) and some of the address windows look as they are
overlapping...
Thanks,
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Mikhail Matusov Hardware Design Engineer Square Peg Communications Tel.: 1 (613) 271-0044 ext.231 Fax: 1 (613) 271-3007 http://www.squarepeg.ca |