Diacom plus on Pentium laptops

Dave Williams dave.williams at chaos.lrk.ar.us
Wed Jul 29 14:46:43 GMT 1998


-> Am I illiterate here on the latest and greatest?  I somehow thought
-> that UART's solved that problem long ago....?    GENE

 The UARTs used in IBM-compatible PCs are "smart", that is, they do a
lot of processing in firmware that other machines did in software.  The
penalty for this is the UARTs can only "see" data rates that match their
firmware, much like the story about frogs only being able to distinguish
between "fly" and "not-fly".

 You can't program the UART to "see" an ALDL stream, so you plug the
cable into the parallel port and poll the hell out of it to see what's
going on.  But there are many types of "standard" parallel port, plus
the occasional wildcard from various OEMs, just to make the life of the
programmer even more difficult.

==dave.williams at chaos.lrk.ar.us======================================
I've got a secret / I've been hiding / under my skin / | Who are you?
my heart is human / my blood is boiling / my brain IBM |   who, who?
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