This question is worth up to 400pts - need answer in the next few days. I purchased pts - still waiting for them to appear on my account!
We are using the IBUS XPCI Extended PCI Passive Backplane; this backplane has 10 PCI slots. We have been trying to get our 8 Frame Grabber boards working under Windows 95 (OSR2).
All the Frame Grabbers are populated in the two Secondary PCI buses. The primary PCI bus does not have any Frame Grabber boards in it. Once Windows is booted into (which takes about 10 minutes!!), we checked the Device Manager to see if the boards were detected by Windows. They were all detected and reported to be working properly. However, when we then tried to access each board, one at a time, with our Windows based program, only three of the eight boards would be accessed. When our Windows Based program tries to access the other five boards the program hangs. Two boards in one Secondary PCI Bus and One board in the second secondary bus work.
I noticed on the Back plane that two DEC PCI-to-PCI Bridge Chips are used. The model of the Bridge chip is 21152-AA
Is anyone aware of compatibility issues with Multiple PCI Bus systems under the Windows 95 OS with this backplane or any other for that matter? Is there a driver that is required for proper initialization of the Bridge Chips to allow for proper handling of PCI cards on the secondary PCI buses?
Your comments on this issue would be greatly appreciated.