Hi David, > However, given the meager host-to-host communications > features, I think I would be better off putting an > Intel 21555 non-transparent bridge on the board. > That will provide 5V tolerance, and a full set of > messaging unit and I2O facilities. All for $50-80 > or so according to the single-piece pricing from > Digikey. I'm not so happy to need to add another > chip, but if the 440EP passes all the other > benchmark requirements, then it seems the least > painful way to proceed. > > Has anyone reading this list had good or bad experiences > with the Intel 21555 or perhaps some of the PLX offers, > eg. PCI 6254?
We've used the 21555 on a couple of our designs (mated to a 7457/107 pair) and have never had too many problems with them. The messaging unit has been very helpful. Just my $0.02, Andrew
