nanogui: Raw hardware VGA driver Q
Subject:
Re: [nanogui] Raw hardware VGA driver Q
From:
Julian Smart ####@####.####
Date:
7 Jan 2002 17:13:44 -0000
Message-Id: <4.2.0.58.20020107165629.062a0ec0@pop>
At 04:07 PM 1/7/02 +0000, Alan Cox wrote:
>> Has anyone adapted the VGA driver to do more than 4-bit colour on a x86
>hardware? I'm interested
>> to know how hard this would be to get going under eCos. Or maybe > 4-bit
>colour diverges from known
>> standards sufficiently to depend on particular video chips. (I don't have
>a particular video
>> card in mind right now.)
>
>VGA 4bit is somewhat demented. A conventional 4bpp frame buffer (ie nibble
>packed and direct access) should be a lot easier in fact
Right, thanks. Does anyone know of a generic way to address SVGA displays above 640x480x4
(on eCos, not Linux) without having to write a new driver for each video chipset? Or maybe
somone has a sample SVGA driver they might be willing to share.
Regards,
Julian
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