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From: ast@cs.vu.nl (Andy Tanenbaum)
Newsgroups: comp.os.minix
Subject: How do you turn on the AT's LEDs?
Message-ID: <1832@botter.cs.vu.nl>
Date: 22 Jan 88 16:35:57 GMT
Reply-To: ast@cs.vu.nl (Andy Tanenbaum)
Organization: VU Informatica, Amsterdam
Lines: 12


My tty.c doesn't turn on the keyboard LEDs on the AT because I couldn't
figure out how to do it.  If somebody knows how to control these things,
please post it, and maybe Jim can include that in the new one.  I presume
there is some I/O port with a 1 bit per LED, but I don't know which.  If
somebody has an AT Technical Reference Manual, see if you can figure it
out by looking in the BIOS.  If you call up your friendly local IBM dealer
and say "How do I turn on the LED on the Caps Lock key?" He will probably
say "Easy, just depress the Caps Lock key."  I think we are going to have
to reverse engineer this one.

Andy Tanenbaum (ast@cs.vu.nl)