PCI buss length

[Martin Riddle]

Quick question.

What is the maximum length of a PCI buss?
I have a 1U mother board but the PCI slot is in the wrong place and I need to extend it.

Reference links ok.

Cheers

 

[Nico Coesel]

Quick question.

What is the maximum length of a PCI buss?
I have a 1U mother board but the PCI slot is in the wrong place and I need to extend it.

Reference links ok.

Just check out some motherboards. I've seen PCI buses extend over
several inches (from chipset to the connectors). The bus loading is
way more critical.

 

[Martin Riddle]

Just check out some motherboards. I've seen PCI buses extend over
several inches (from chipset to the connectors). The bus loading is
way more critical.

I know Tprop must not exceed 10ns @ 33mhz. But how much loading is acceptable, with a extender that uses ribbon cables.
This tends to become an empirical thing, because modeling it would be fairly difficult.

Cheers