Re: PMax LK201 Autorepeat

[Thomas Graichen <graichen@rzpd.de>]

hasn't CyberPeasant said ? ...
> 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?
> 
looks like we can get a nice collection of those pmax keyboard
mysteries :-) ... isn't there anyone with a pmax and some spare time
who can have a look into the keyboard related stuff in the kernel and
the xserver ? anyone interested ?

t

-- 
  thomas graichen - graichen@rzpd.de graichen@OpenBSD.org graichen@FreeBSD.org

  perfection is reached, not when there is no longer anything to add, but when
      there is no longer anything to take away    antoine de saint-exupery