<Anybody got info on a Nat. Semi. 57109 "Number Oriented Processor"?
<I've got one on a "calculator interface" board, that I suspect was
<a primitive math coprocessor. I'd love to get specs on it, and/or
It was a calculator chip I believed based on the 4bit cop series. It's
been a long time. Anyhow the board used a calculator chip despite it's
slowness to avoid higher math (to 8 digits) in software. It was however
not a coprocessor, it is a limited slave at best.
<replacement chips in case this one dies.
You might get lucky...
Allison
Received on Mon Mar 16 1998 - 23:00:00 GMT