Anyone got any experinece with PCI-64 ?

Bruce M Simpson bms at
Thu Sep 5 10:37:30 BST 2002

On Thu, Sep 05, 2002 at 10:30:31AM +0100, Pete French wrote:
> Now I am trying to drop a 4200 into it - this is apparently
> a 64 bit PCI card - which means its got an extra
> lump on the back. I'd never seen anything like it, and though
> it drops into the slot fine, it wont work.

Hrm. I remember installing a 64-bit QFE PCI card in a Sun with 32-bit PCI
slots and it worked fine. Did you check for the presence of the gap near
the front on the edge connector which would indicate whether it's a 3.3V or
5V PCI card? If the motherboard has a small piece of plastic which mates
with that gap, the motherboard supports 3.3V cards only. But it sounds like
you have a 5V motherboard. I can't remember if 5V implies 3.3V; I don't
think it does.

As far as I'm aware, most 64-bit PCI cards are backwards-compatible with
32-bit PCI host bridges, someone else on the list feel free to correct me
if I'm wrong.


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