re: No Slot Clock in //C+

[amorton@HEARTLAND.BRADLEY.EDU (Alan Morton)]

newsflash.concordia.ca!mizar.cc.umanitoba.ca!mona.muug.mb.ca!jfe
nske@uunet.uu.net (John Fenske) writes:
 
          Speaking of NoSlot Clocks, can one be installed in
IIc+ that already has the memory expansion board installed?
Will they both fit?
 
It will however it is not the easiest thing in the world to do.
I discovered that in order to install the No Slot Clock inside
the C+ with a memory board one had to do a couple of things in
order to make it all fit.
 
1) The socket holding the socketed chip (I forget which one it
is by #) that you unplugged then put the NSC into before
replacing the original chip had to be physically removed from
the mother board and replaced with the No Slot Clock which the
original chip was then placed into. This has the disadvantage
of becoming a permanent part of the computer even after the
clock battery dies!
 
2) On the Sequential memory board, which I found was the only
one that worked, since the Apple board tended to cause system
crashes. the bank of chips on the memory board directly above
the NSC had to be removed from their sockets and soldered
directly onto the memory board, voiding the warranty in the
process. I found however that the sequential board at times
while utilizing memory intensive work would cause weird stuff
to happen while the //C+ was in fast mode, which would not
occur at normal speed. This problem was fixed by replacing all
of the chips which were 150 ns on the memory board with faster
ones, in my case 70 ns ones this solved the problem and was
done at the same time as the NSC install.
 
Hope this is of some help.
 
ADM

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