Keith Causey wrote:

> This would probably waste too much port space but you could reverse the 'w'
> register in two instructions if you wired two ports together like this:

Alternately, wait for this beast:
http://www.atmel.com/atmel/products/prod39.htm
(it's an AVR with dual UART, no ADC, FPGA on chip) looks good for custom
protocol interfacing at high speed, multiple channel, Video processing ....
I want one to play with now, it would make a beaut logic analyser, just add
SIMM & graphics LCD
regards,
Graham Daniel.