From: Charles Forsyth <forsyth@terzarima.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] usb keyboard and mouse?
Date: Thu, 29 Jun 2006 09:23:16 +0100 [thread overview]
Message-ID: <ef3c53eb40c888a52c30752a6364faf3@terzarima.net> (raw)
In-Reply-To: <200606290531.k5T5VQ1W000476@ducky.net>
> 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.
next prev parent reply other threads:[~2006-06-29 8:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-29 5:31 Mike Haertel
2006-06-29 8:23 ` Charles Forsyth [this message]
2006-06-29 11:55 ` Dan Cross
2006-06-29 15:02 ` Ronald G Minnich
2006-06-29 23:50 ` Charles Forsyth
-- strict thread matches above, loose matches on Subject: below --
2006-06-26 18:50 ISHWAR RATTAN
2006-06-26 19:22 ` Francisco J Ballesteros
2006-06-27 0:19 ` geoff
2006-06-28 15:48 ` Artem Letko
2006-06-28 17:01 ` Francisco J Ballesteros
2006-06-28 23:02 ` C H Forsyth
2006-06-28 23:21 ` Ronald G Minnich
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