Lloyd E. Sponenburgh wrote:
"DoN. fired this volley in
:

e.g. the MC1488/MC1489 pair (I forget
which is the transmitter and which is the receiver, though I could
always look it up) to the CTS pin of the RS-232 connector

That's always been an easy one for me to remember.

"8" is binary 0x100. "9" is binary 0x101.

0x1000 and 0x1001, yes?

--Winston