17 Oct
2007
17 Oct
'07
10:48 a.m.
"Chuck Guzis" <cclist at sydex.com> wrote:
On 17 Oct 2007 at 12:09, Jim Battle wrote:
This had a couple of S-100 incarnations, one by an outfit known
as Mini-Micro-Mart. In the 1975 timeframe when you had a few K
of memory in a S-100 system it made at least a little sense.
Later extrapolations used a AMD 9511/9512 chip, as in the
Compupro System Support, and boards by TDL and Northstar. That
was a very expensive chip whenever I saw it for sale :-).
Tim.
Finally, I recall seeing an article where
somebody took a pocket
calculator chip and essentially poked simulated keystrokes at it and
then decoded the LED driver output to determine the answer. It was very
slow, though, so all it saved was the space of the floating point
library code.
I remember that one. It may have been an early issue of Byte. I
also wondered at the time if any speed was gained over just running
plain old x80 code.