PMax LK201 Autorepeat

[CyberPeasant <djv@bedford.net>]

I recently removed the LK-201 keyboard from my DS3100/OpenBSD 2.1 machine
for cleaning. Being a rash sort, I did this in the middle of an X session.

While the keycaps etc. were drying, I plugged in another LK-201, also
"hot swapping", i.e. without powering down the machine or even stopping X.
(I am fearless.)

To my surprise, the spare LK-201 exhibited the following miraculous
behavior:

	Up and Down Arrow autorepeat worked!  It took two presses (both
	gave keyclicks) of Up or Down Arrow to get one response when
	not-autorepeating.  Return behaved the same, both with respect
	to autorepetition, and the need to press twice when single keying.

	Xev showed the expected response for these keys under autorepeat,
	/and, curiously/, showed the Return event for the first 
	(ineffective in an xterm) press of those weird double-keyings.
	
	This "double keying" needs clarification:  To get N Returns,
	I had to press the Return key N+1 times.

The other LK-201 has always has shown the pesky no up/down/return
autorepetition bug, which many have remarked. 

In the spirit of science, I stopped X, and lo, the autorepetitions worked
also with the console. The "double keying" was /gone/.  Weirder and weirder.

I restarted X : the keyboard reverted to the old "no autorepeat up/down
mode". "Double press" on those keys was gone.

Hmm.  Evidently the LK-201 is programmable? Has some kind of /modes/
it can be sent?  And is being sent the /wrong ones/ by X?

Factoid: the LK-201 which exhibited the "good" behavior, /had never been
plugged into a Pmax before/ -- it is salvage from a Rainbow.

Comments, gentlemen?

Dave 
-- 
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			 --== Old age sucks. ==--