>   Octavio, I've been looking at a variety of front-ends and the one
>mentioned below is very similar to the Linear Tech app note. I've tried
>different wide-band amps following the FET buffer. I've also looked at the
>recent Circuit Cellar Ink article and one in Electronics Now (May 98) as
>well as many other circuits. All my work is very preliminary at this time.
>I need to finish the logic analyzer first.
>
>   I've been following the discussion on using the Gameboy. I had no idea
>that it's architecture was open or had so many resources available. My
first
>question is how fast can you sample data with a Gameboy? It seems that you
>can only do a 1-2Mhz DSO with it. If that's so, there are less
sophisticated
>analog front-ends that would work fine. For example; one of the many
>FET-input op amps. You would still get a decent bandwidth and a very low
>input bias current.
>
>   - Tom

As a matter of fact I'm looking for a variable attenuator with 1-2-5 steps.
There is a lot of resources available for GameBoy development like
assembler, C Compiler and simulators.
The GameBoy would do just 1-2MHz DSO, but I'm planning a different approach
to do a 30-40MHz DSO. The GameBoy will just control it and show the result.

Regards,

Octavio
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Octavio Nogueira  - e-mail:   nogueira@mandic.com.br
http://www.geocities.com/~oct_nogueira
"ProPic" Production PIC Programmer Windows under US$20
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