OK, I tried to figure this out myself, but now I'm breaking down and
invoking the powers of the PICLIST:

I have a friend who wants to control a bunch of PIC devices on a network
with his Mac.  I'm going to help him if it kills him (me?).  Being totally
Mac illiterate, my crash course today taught me:

1. My PIC RS232 routines to RS485 through one of the many 8 pin drivers
I've found: piece o' cake.
2. Some simple multidrop newtorking scheme: no problem.
3. Mac RS422 full duplex to PC-style RS232 full duplex: no problem.

My understanding screeches to a halt there.  The question:

How would I connect the full-duplex Apple serial port to the multidrop
network?

Thanks in advance,




Bruce Cannon
Style Management Systems
Remember: Electronics is changing your world...for good!