In message <[EMAIL PROTECTED]> Warner Losh writes:
: In message <[EMAIL PROTECTED]> "Brian
:W. Buchanan" writes:
: : Do PCI PCMCIA adapters work in 4.3?
:
: No.
I should amplify a little here.
The pci cards that plug into a desktop route interrupts over the pci
bus. This routing reqires programming the bridge chip in a certain
way. OLDCARD doesn't know how to do this. The same pci cardbus
bridges in laptops are subtlely different. They include a "back door"
to the ISA bus of some flavor. With this backdoor, we can do what
we've always done and route via ISA interrupt back door and not have
to change anything to use these chips in "legacy" mode.
There are some things that might change this in time for 4.4. Time
will tell, but I don't want to say too much about this just yet.
Warner
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