AlphaStation 500 PCI implementation

From: Jim Zelenka <jimz+_at_cs.cmu.edu>
Date: Thu, 14 Nov 1996 10:43:21 -0500

We're looking at getting in some AlphaStation 500s to use for I/O intensive
applications. We'll need to be loading up its option slots with network and
SCSI adapters to communicate with other nodes of our distributed multicomputer
and our storage systems.

We're looking at the 500s because the 255s have such an amazingly poor PCI
implementation that we can't get certain combinations of host adapters into
them, because chained interrupts are not implemented correctly (and those
adapters which we _can_ put in must be put in specific slots to avoid line
conflicts with built-in devices like the ethernet).

Does anyone have any experiece using DGLPBs and KZPSAs in these machines?
Theoretically, they should work fine, but experience suggests that theory
might not be correct.

Also, how reliable is the 64-bit PCI slot? Again, theoretically, 32-bit PCI
devices should work in there, but past experience with DEC makes me wary of
anything which someone has not actually demonstrated to work.

Thanks,
Jim.Zelenka_at_cs.cmu.edu
CMU/SCS Parallel Data Lab
Received on Thu Nov 14 1996 - 17:39:27 NZDT

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