Messages in this thread |  | | Date | Wed, 16 May 2001 08:24:24 -0700 | From | Jonathan Lundell <> | Subject | Re: LANANA: To Pending Device Number Registrants |
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At 4:57 PM +0200 2001-05-16, Vojtech Pavlik wrote: >On Wed, May 16, 2001 at 07:37:45AM -0700, Jonathan Lundell wrote: >> At 10:02 AM +0200 2001-05-16, Vojtech Pavlik wrote: >> > > It's also true that some buses simply don't yield up physical >> >> locations (ISA springs to mind, >> > >> >ISA is quite fine, you can use the i/o space as physical locations. >> >> I meant physical not as in physical-vs-virtual addresses (all ISA >> addresses, memory or IO, are physical in this sense, by the time they >> get to the bus). Rather, I meant that you can't determine which slot >> a given device is plugged into. If you have two NICs in two ISA >> slots, there's no way to distinguish between the slots. In practice, >> you'd have to experiment or remove a card and check the jumpering or >> some such. > >Yes. But I meant that while this indeed is not possible, still the i/o >port address can be used instead of the slot number, because it at least >is physically jumpered and must be unique.
Yes, I agree. And it's stable (whereas "physical" PCI addresses are not). Best we've got for ISA (though it's true for ISA memory addresses as well).
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