> | port cards that has the broken 10bit address decoding circuitry. ISA buses
> | doesn't provide the address decoding stuff I think, it's down to the ISA
> | card to do it, I believe.
>
> True; but there are only 10 I/O address lines available in the ISA bus, so
> there's no way to address above 0x03FF no matter how smart the card is.
I thought the maximum was 20. After all, there are _some_ ISA cards that
can address up to 16MB of memory, aren't there? Perhaps you're talking of
the old 8bit ISA bus?
> Microchannel, EISA, and PCI support all 16 I/O address lines.
Hmm, yeah. At least, Intel did manage to come up with a really nice bus in
the guise of PCI, and what's more, it can be expanded to 64bit in the
future.
Cheers,
Alex
-- /\_/\ Legalise cannabis now! ( o.o ) Grow some cannabis today! > ^ < Peace, Love, Unity and Respect to all.http://www.tahallah.demon.co.uk - *new* - rewritten for text browser users!
Linux tahallah 2.1.129 #63 SMP Sat Nov 21 23:52:03 EST 1998 Two Intel Pentium Pro 166MHz processors, 331.78 total bogomips, 48M RAM System library 2.0.104
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