Dec 132017
Speed up utility for console keyboards under SCO Xenix.
File XNXKBD.ZIP from The Programmer’s Corner in
Category UNIX Files
Speed up utility for console keyboards under SCO Xenix.
File Name File Size Zip Size Zip Type
KBD_SPEE.C 3528 1115 deflated
KBD_SPEE.DOC 2178 1148 deflated
KBD_SPEE.SH 28 28 stored

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Contents of the KBD_SPEE.DOC file

From edsews!uunet!fsg!skipnyc!skipsun!skip Fri Feb 2 14:00:31 1990
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From: uunet!fsg!skipsun!skip (Skip Gilbrech)
Message-Id: <[email protected]>
Subject: Re: Xenix Faster Keyboard repeat wanted.
To: edsews!edstip!ohrnb (Erik Ohrnberger)
Date: Thu, 1 Feb 90 1:56:38 EDT
In-Reply-To: <[email protected]>; from "Erik Ohrnberger" at Jan 18, 90 5:07 pm
X-Mailer: ELM [version 2.2 PL9]
Status: RO

>Is there anyway to increase the keyboard repeat rate
>on a 386 running Xenix? Under MS/PC-DOS I seem to recall
>a program in C that "outb" some instructions to the
>keyboard controller that told it to increase its
>repeat rate. Can this be used while running Xenix?
>Does anyone know of the command sequence to the
>controller? Does anyone have a smattering of C
>code that does this?

I've been using the following code since I got 286 Xenix long, long ago
(hasn't destroyed anything yet..). It's not terribly flexible, robust,
or pretty (my god, I just noticed I used wait loops!!), but you only need
to invoke it once at system startup time, and it makes the keyboard much
more pleasant to use..

By the way, you need '/dev/port' to use this, and as I recall, this file
doesn't exist in the system as distributed, even though the kernel supports
it. At least in 386 Xenix 2.2.6 it's major device 4, minor 3, so you would do:

% /etc/mknod /dev/port c 4 3

Unless your machine is totally isolated/personal, I'd also set the
permissions very carefully, since you can obviously really screw up
the machine by writing to arbitrary ports...


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