Date: Sun, 16 Nov 1997 09:36:23 +0100 (MET) From: Søren Schmidt <sos@FreeBSD.dk> To: mini@d198-232.uoregon.edu (Jonathan Mini) Cc: hackers@FreeBSD.ORG Subject: Re: VESA VBE 1.2 and 2.0 library Message-ID: <199711160836.JAA11296@sos.freebsd.dk> In-Reply-To: <19971115163359.29992@micron.mini.net> from Jonathan Mini at "Nov 15, 97 04:33:59 pm"
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In reply to Jonathan Mini who wrote:
Sounds VERY interesting!
I'll help out testing and what else I'm able to do...
You have commit privs right?, just grap yourself the next free dev #...
> I am developing a library which will provide VESA VBE 1.2 and 2.0 support
> for FreeBSD. It works as follows :
> 1) There is a device in the kernel which provides memory mappings for
> the video card, and (if needed) a virtual framebuffer mapping in kernel
> memory. (this ensures that the framebuffer won't get swapped out)
> 2) a vm86 daemon which contains mappings to the virtual framebuffer (if
> in use) and io privelege to the video card's I/O space. This daemon has
> two purposes : one, it performs VBE calls requested by the vesa device
> and returns the results (often data tables) where the vesa device can
> reach them to pass back to the caller.
> 3) A library which acts as a front-end for the vesa device and hides the
> whole interface between the vesa device and userland. It also will manage
> contention against syscons, if enabled. (For example, it will handle
> switching between vtys, changing the keyboard mode, etc)
>
> This provides support for all VESA VBE video modes on any card which supports
> 1.2 or better of the spec. (I have never seen a card which did not suport at
> least VBE 1.2, and this is including old 8 bit VGA wanna-be cards that are so
> slow you would never want to use one) It will also use a linear framebuffer
> if the card provides it, and if not, a virtual frambuffer will be made
> available. The virtual framebuffer is much slower, but it works.
>
> So, I am officially requesting a major number to be assigned to me for the
> device 'vesa' which provides the memory mappings needed for this system to
> work.
>
> --
> Jonathan Mini Ingenious Productions
> Software Development P.O. Box 5693,
> Eugene, Or. 97405
>
> "A child of five could understand this! Quick -- Fetch me a child of five."
>
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Søren Schmidt (sos@FreeBSD.org) FreeBSD Core Team
Even more code to hack -- will it ever end
..
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