Over at VC Forum, I've been working on a low-cost
alternative using a
AVR (or pair of them) and the timer "capture" feature at a 16MHz
sample rate. One objective was to design something that anyone
could build, so the SMT (ATMega128) uC that I've been using is out.
I've done a single sided board using atmega 128 and soldered it myself.
It is easy if you learn how to do.
http://www.tabajara-labs.com.br/eletronica/tts/1.JPG
Thus far, I've done MFM, FM and Apple II floppies
in the host
software with very good results.
Congratulations!!! :oD
Eventually, I'm looking at porting the design to
one of the new NXP
Cortex CPUs which can be had in PLCC. But first things first...
Noooooo :( Keep the work with AVR! :D