On Fri, 24 Jul 1998, David Shoemaker (Comforce/RhoTech) wrote:
> So we would have to have a set of latches to pretend they were the switch
> matrix. Not too tough.
> And we would have to have a set of latches to pretend they were the
> display's. Once again not to bad.
Why are any latches needed?
Just send the signals from/to the Parallel Port. Some line
drivers (LS244) may be needed to drive the data to the PC. I made that
mistake with the Exorcisor.
> The XOR's for the probes are still needed but could perhaps be moved into
> the "chip". Joe?
I think so....what do those actually do? I noticed those
on the schematic but just never paid any attention? Are they to
invert the polarity of signals in certain modes?
Joe
