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To: Michael Smith <msmith@atrad.adelaide.edu.au>
cc: jgreco@brasil.moneng.mei.com (Joe Greco), phk@critter.tfs.com,
        jkh@time.cdrom.com, dgy@rtd.com, freebsd-hackers@freefall.freebsd.org
Subject: Re: Watchdog timers (was: Re: Multi-Port Async Cards) 
In-reply-to: Your message of "Thu, 01 Feb 1996 17:07:57 PST."
             <199602020107.LAA25538@genesis.atrad.adelaide.edu.au> 
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Date: Fri, 2 Feb 1996 10:20:37 PST
From: Bill Fenner <fenner@parc.xerox.com>
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In message <199602020107.LAA25538@genesis.atrad.adelaide.edu.au> Michael Smith 
wrote:
>Anyone out there ever written a video BIOS?

PC BIOS's probably still all have code to deal with BIOS-less mono video 
cards; why not just decode the video memory range and update internal state 
with the memory writes, then convert them into VT100 codes (or, rather, the 
card should have a downloadable termcap in NVRAM so that I can plug in my 
tvi925!...)

Don't forget that during the "pre-boot" phase you need to pretend to be a 
keyboard, too, not a serial port, or else you can't run setup.

  Bill