Re: Various Accelerators

[David Wilson <mcs6502@gmail.com>]

On Sep 2, 5:47 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:

> The fragility is a result of fairly soft copper wires used as pins--
> they are quite durable unless repeatedly bent (which some folks manage
> to do when inserting or removing them from the processor socket).  If
> you always use a tool for removing and always insert straight in after
> lining up all the pins, it's not a problem.

My Zip-8000 had such thick pins I was worried it would damage the
motherboard socket. I inserted it into a sacrificial 40 pin DIL socket
which in turn plugs into the motherboard socket.

> The early ones (I think the first 8MHz production run) suffered from
> unreliable cache SRAMs *inside* the potting, and thus fatal.  An 8MHz
> Zip Chip that still works is almost certainly not one of this lot.  ;-)

I must power up my system - it has been some years since that IIe was
last turned on...