Re: pci bus latency

[Graeme Gill <graeme@colorbus.com.au>]

From: "Joe Hanes" <joe_hanes8@hotmail.com>

> 1. I'm trying to figure out whether 32x32 burst FIFO in my PCI Initiator 
> add-on card is good enough for 60 Mbps operation.
> In my system, I have one PCI Ethernet LAN, one ISA Graphics card (with 
> low bus utilization) and one PCI Initiator Card.
> My assumption is the PCI Bus latency is typically ~5usec.

This is what you would expect from the PCI spec., but in
practice if you want to have high data rates, and you want
to cope with less than perfect chipsets and video cards,
1-20 msec would be a safer target.

Graeme Gill.