From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <ef3c53eb40c888a52c30752a6364faf3@terzarima.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] usb keyboard and mouse?
From: Charles Forsyth <forsyth@terzarima.net>
Date: Thu, 29 Jun 2006 09:23:16 +0100
In-Reply-To: <200606290531.k5T5VQ1W000476@ducky.net>
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> The BIOS SMI handler examines the saved register state, figures out
> what the OS was trying to do, runs a software model of the PS/2
> keyboard controller's state, chats with the USB keyboard, formulates
> an appropriate response, emulates the I/O instruction the OS was
> trying to do, and resumes execution of the OS at the instruction
> following the I/O instruction.

yes, it's good fun and worked fine on my plan 9 file server.
i assumed it was all done with interrupts disabled, so that, as
anciently, the console should not indeed be used for chit-chat.