Christoph Anton Mitterer wrote: > Ruediger Dohmhardt wrote: > >> To answer your question: You can plug (2) and (3) into a PCI-X slot. >> Disadvantage: The whole PCI-X bus slows down to 33MHz, whenever it >> recognizes a single PCI-card. > > > Oh,.. thats bad,.. uhm is this sure? As I told my board hast 3 PCI-X > slots (2 with 100MHz and 1 with 133MHz) and one conventional PCI slot > (33MHz). I think the PCI and the PCI-X buses have each their own > controller. I'm not really sure, how many busses you have. I guess 3: 1 x PCI-33MHz 1 x PCI-X 100MHz 1 x PCI-X 133MHz But again its just a guess. I assume further that just one bus (the one you plug your card into) slows down to 33MHz. > But if you're true and the wohle buse runs at the spead of the slowest > card, that would imply that if I'm using one of the two 100MHz slots > (with 100MHz PCI-X cards) than I wouldn't be able to use the 133MHz in > the 3rd slot. As said above, I guess just one bus slows down. > Is there a way to defenitely determine if a card is keyed correctly? No! There are, for example, PCI-chips from companies like AMCC or PLX. You can easily find the data sheet in the WEB, which tells you what kind of signalling they have. Most PCI-interface chips are ASICS, hence you won't find a specification and you must rely (which you should do, except you design/build professional systems) on the "keying". Hauppauge (in Germany) is always very helpful on the phone. They might tell you what kind of signalling there PCI-chips use. Ciao Ruediger -- Ruediger Dohmhardt ruediger.dohmhardt@xxxxxxxxxx Kiefernweg 7 Tel.: 04101 61743 25421 Pinneberg
