The Quadra PDS is a different beast than the IIsi and
SE/30 PDS. Same principle though.
The slot that looks like a 72 pin SIMM slot is Apple's
hedge against the chance they may have screwed up
something in the ROM. Apparently they did in the
very early IIsi as some shipped with a ROM SIMM.
Those are highly prized because at least one version
works in some revision of the SE/30, allowing it to
run system 7.6 and take full advantage of the
maximum possible 128megs RAM without the "sticky
business" of Mode32. (I'm sure it gets a bit on the
rough side if you need to boot with extentions off
and can then only use 8 megs RAM.)
Yes, that is an FPU socket on the riser. Plug a 68882
chip into it. Is the slot on the riser NuBus or PDS?
That's the videocard, right? If it has a PDS on there
you should be able to plug a IIsi or SE/30 NIC onto
it. :) One thing to watch out for when using SE/30
PDS cards in a IIsi is some cannot handle the speed
bump from 16 to 20Mhz.
I just wonder if plugging an AUI adaptor and CAT5
cable into the onboard video could kill it? (And of
course trying to "network" it by hooking the other
end of the cable into an active LAN.)
=====
"The earth swarms with inhabitants. Why then should nature,
which is fruitful to an excess here, be so very barren in
the rest of the planets?" Bernard de Fontenelle, 1686
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