Folks
please remember that there are 4000 other people reading these
messages, and many of them are already becoming overloaded with the
traffic levels we've been seeing.
a resume fight isn't going to help this situation at all. and will
probably end up with more users joining johnny in the moderation queue.
scott
moderator
On May 27, 2008, at 9:31 AM, Graham Cox wrote:
On 27 May 2008, at 5:37 pm, Graham Cox wrote:
During my fellowship I wrote a real-time data acquisition app in
6502 assembler that used a custom circuit board that served as a
Schmidt trigger to clean up a square wave from the cardiotachometer
we used.
While that may sound impressive to some, this is almost identical to
a project I was given as an assignment as a first-year
undergraduate. Schmidt triggers are uncomplicated circuits (you can
get four of them in a 4093 chip anyway).
Those of use who are slightly too young to have grown up with
minicomputers and cut our teeth instead on first-gen home micros,
ate, slept and breathed 6502 assembler, as it was the only option
for getting any performance out of those machines. I also home-
brewed a digital oscilloscope from a KIM-1 so real-time data
acquisition with a 6502? Been there, done that. Have to admit it
wasn't very good as the 1MHz processor speed did somewhat limit its
bandwidth... but it worked.
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