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Re: keyboard response
> Date: Thu, 25 Jun 1992 11:51+0200
> From: Vincent Keunen <email@example.com>
> I use a MacIvory model 3 on a Mac IIci with system 7.0.1 plus tuneup
> (french system) and a symbolics keyboard (h-s-m-c-sh-stuff).
> My keyboard doesn't always respond well to my typing. A few times a
> day, caracters get lost although I am *not* the fastest typer in the
> east... Sometimes also, one character gets duplicated some 20 times
> like thiiiiiiiiiiiiiiiiiiiiiiiiis (even though I don't type c-u;
> however, i do a (setf si:*kbd-auto-repeat-enabled-p* t) in my
> lispm-init). This seems to happen when the mac is pretty busy (other
> ivory tasks or mac tasks like PrintMonitor).
> Is there a way to change this?
The keyboard input is being lost entirely inside the Macintosh, in low levels
of its software. This happens on non-MacIvory Macintoshes also, e.g. when the
network is very slow. You can increase the buffer size by illegally modifying
a number in the Macintosh boot block. I once wrote a program to do this and
maybe somebody else on the SLUG list still has it.
I assume the auto-repeat runaway occurs when the lost key transition is an
up-transition instead of a down-transition.