I have been considering buying a scope. What bandwidth, channels, etc. is
needed?

I am extremely interested in this.

Doc Custer
Retired Software Engineer and sometime Audiologist

Well most scopes are 100 MHZ and two channels.
They still run about $1500 new.

You can some times find used bargains on e-bay.

This is a classic. Four channel and 350 MHZ
http://www.exphil.com/products/Tektronix/2465A

A bit over kill for single chip computer use.

http://www.google.com/products?q=Tektronix+2465A+&hl=en&um=1&sa=X&oi=froogle&ct=title

I have something like this one. Works great for single chip computer use.

http://www.google.com/products?q=Tektronix+465&btnG=Search&hl=en&show=dd
Make sure you get probes in the bargain as they can run into real
money.

Hey guys, this is the digital age!  :)

Check out http://www.bitscope.com for USB and Ethernet connected
PC-based oscilloscopes.  Let me know if you get one - I want to know how
they *actually* perform.  I plan on getting one instead of a full-blown
bench-top oscilloscope.

-Vince Orton

That looks great Vince. The logic analyzer ought to come in real handy if
you are doing anything with single chippers. The portable aspects
are real important when traveling around as I usually carry a note
book computer anyway. I have two scopes already but I am really tempted.