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From: j@uriah.sax.de (J Wunsch)
Newsgroups: comp.os.386bsd.development
Subject: Re: Notebook -- LCD/External display switching
Date: 19 Apr 1994 11:58:59 +0200
Organization: Private U**X site; member IN e.V.
Lines: 19
Message-ID: <2p0a13INN9o6@bonnie.sax.de>
References: <9410116.15230@mulga.cs.mu.OZ.AU> <JKH.94Apr11185809@sentnl.ilo.dec.com>
NNTP-Posting-Host: bonnie.sax.de
jkh@sentnl.ilo.dec.com (Jordan Hubbard) writes:
>This would be called... syscons! :-)
[description of virtual terminal switching deleted]
Nope, Jordan. You failed this probe ;-)
What he meant is to switch back and forth between the LCD panel and
the external CRT connector. LCDable chipsets can handle both, the
internal LCD with its special requirements, and a normal CRT, with the
usual raster generation, with a RAMDAC etc. Switching between both is
some very weird chipset secret. The CL-GD 610 does it by setting a bit
in some attribute controller register.
--
cheers, J"org work: joerg_wunsch@tcd-dresden.de
private: joerg_wunsch@uriah.sax.de
Steinbach's Guideline for Systems Programming:
Never test for an error condition you don't know how to handle.