1 Jul
2002
1 Jul
'02
1:01 p.m.
On Tue, 2 Jul 2002, Tony Duell wrote:
But I'm still trying to figure out where the cable went to. Unless there
was a second board in another slot involved, I can't figure out how it
connected to the computer.
Sellam Ismail Vintage Computer Festival
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With those chip, all it can be is a 2K RAM card (with
the PAL used as an
address decoder/chip select generator). My guess is that it maps into the
2K shared ROM space for Apple ][ I/O cards.
Yep.
Could it be between the +5V line and ground? Could it
be nothing more
than a decoupling capacitor? Tantalum caps do sometimes explode for no
good reason, although to find several boards where this has happened
would be unusual.
It was a very cursory examination. It very well may have been between +5
and Ground. I didn't look up any of the chips in a reference because I
didn't have the time.
It seems to me
that these computers were part of some network scheme, and
that these cards possibly held some networking firmware. How the cap blew
Yes, they probably held the netork drivers, loaded from disk when the
machine booted.