On 1999-03-04 [EMAIL PROTECTED] said:
>>>EISA = black (ExtendedISA, so it's a bit longer then a ISA)
>>I thought EISA was just higher in pin density, but the same size?
>Interesting, I assumed ISA was 8-bit and EISA 16-bit. And that the
>EISA was therefor longer. But I have never actually gotten a good
>explanation (well, two-three people have said exactly what I'm
>saying, but that isn't a *proof*) When I check on the ISA (from a
>XT MB) it seems exactly the same as the once in my PC.
>What would you call the longer (or extended) bus? I think that if I
>extended an ISA bus I would get an EISA.
>Well, someone should know the *correct* answer here on the list (and
>perhaps give a nice explanation?)
>//Bernie
Hi
Well, EISA and ISA, here I am scratching my head a bit, but the EISA uses
the same slot as ISA.
There was a scare about knowing what was isa and eisa, that was solved by
the eisa having a step in the one end of the slot to prevent the isa card
from engauging the extra conecters in the bottom of the slot, so if you had
an eisa slot an isa card could be pluged in to it whith out being fryed.
I seem to recall reading about this 4 or 5 years ago, so it is a bit
foggy.
The visa local bus, is another one whith more to it than what you see,
What I read about it is the extra slot or slide at the end of the isa
looking like slot is a direct way for the CPU to access the card plugged in
to it.
I am not totaly sure but I think the PCI slot is a much more compact
version of the VISA local bus idea.
Pete
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