🚀 go-pugleaf

In article <1990Mar5.0...@cs.rochester.edu> k...@cs.rochester.edu writes:
>I wonder how many other people used a UART as I once did.

>                     But the board didn't have a timer chip.
>So I wrote characters to the
>serial chip. The serial data just fell off the output pin, of course.

I've had to do things like that.

(Actually, now that you remind me, I think that's how I discovered the Altos
586 serial port's 50 bps rate is actually 5 bps - I was looking for the
longest time interval with the fewest output characters!)

The most interesting application I've thought of so far for a UART is as an
8-channel multiplexor:

serial input channels	(mind you, this scheme would need to clock at
  A B C D E F G H	something like 384K bps for eight 9600 bps lines...)
  | | | | | | | |
+-+-+-+-+-+-+-+-+-+                           +-----------------+
|     U A R T     +---------------------------+     U A R T     |
+-----------------+   multiplexed data line   +-+-+-+-+-+-+-+-+-+
                                                | | | | | | | |
(and no, I haven't done it.  Yet.)		A B C D E F G H
					      serial output channels
-- 
"Logic is a little bird that sings in the meadow."	-Mr. Spock
cha...@C3.COM	{decuac.dec.com,cucstud}!c3pe!charles	ex::!echo Boo: