FPGA VAX update, now DIY TTL computers

Chuck Guzis cclist at sydex.com
Thu Nov 3 10:32:49 CST 2005

On 11/3/2005 at 5:19 PM Nico de Jong wrote:

>  Was the input rate for the Flexowrite limited by the flexowriter itself,
>or by the PB250 ?

I had only a short time on a PB250.  Compared to other small systems of the
time, such as the IBM 1620, it wasn't all that slow.  But you could corrupt
memory by banging on the side of the machine--those magnetostrictive delay
lines were very sensitive to mechanical shock.


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