[2423] in Athena Bugs

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Re: keyboard problems with the kernel debugger/minos kernel source

daemon@ATHENA.MIT.EDU (probe@ATHENA.MIT.EDU)
Mon Jun 19 23:48:15 1989

From: <probe@ATHENA.MIT.EDU>
Date: Mon, 19 Jun 89 23:48:01 -0400
To: kubitron@ATHENA.MIT.EDU
Cc: bugs@ATHENA.MIT.EDU
In-Reply-To: John D. Kubiatowicz's message of Mon, 19 Jun 89 21:44:04 EDT,
Reply-To: Richard Basch   <probe@ATHENA.MIT.EDU>


> Date: Mon, 19 Jun 89 21:44:04 EDT
> From: John D. Kubiatowicz <kubitron@ATHENA.MIT.EDU>

> The problem that I had with the debugger is a direct artifact of your
> fix in /sys/standca/keyboard.c (which makes sense, since you seem to
> be throwing away keystrokes).  Are you sure this is correct?

hmmm...  I don't know...  In that case, I would say neither fix (mine
nor IBM's is correct).

IBM fix:
	Disable keyboard LEDs... this would cause an error when you
	tried toggling them, so they got rid of the source of the error

My fix:
	Upon an error, clear the error from the pipeline.  This seems
	to work with no problems at the "boot" prompt, which makes me
	wonder if it is this fix or whether "debug>" is messed up.
	Also, as a side-comment, I have used the "debug" mode without
	problems before...

-Richard

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