> The first method is quite fast, transferring data at a rate up to 30uS 
> per bit. I use it to transfer 20bits of data + 2 CRC bits, starting w/
> 2 start bits, for a total of  24 bits. 30uS works if both PICs have a
> fast clock, slower if 4MHz clock on one PIC.

I use a PIC RAM sniffer with an LCD using clock/data. Invaluable
debugger for what's really going on inside the PIC. Every home
should have one

> The second method is a memory dump.....
> ....for even a slow PC to extract and display the information

I have old DOS boxes around (286/386) that I'd love to put to
work doing chores like that. When I get around to it that is. The
sniffer above is OK, but to have all a PIC's RAM and registers
up on a monitor would be good. It wouldn't be too hard to either
send it as serial or in through LPT1:

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