Timothy Normand Miller wrote:
Are you saying that you have a PCI bus directly connected to I/Os on a
microcontroller? If so, you would have to have a very fast CPU with
some incredibly precise timing in order to implement PCI signaling in
software.
I've done that twice, on the Ubicom IP2022 and IP3023 processors. It's
difficult, and on the 250 MHz IP3023 could only manage about 10 MHz PCI
timing, and it had to be the PCI master and clock source, and was not
fully compliant with the PCI standard. I generally recommend against
trying to do this sort of thing, unless you enjoy spending your time
rolling boulders uphill.
You really need a hardware PCI interface. You can implement your own in
an FPGA, but it's a lot of work and you're probably better off buying a
suitable chip. PLX Technology makes such things.
Eric
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