Re: VESA VGA Frame Buffer

Sid Boyce (szb50@amdahl.com)
Tue, 28 Jul 1998 11:41:09 +0000

Geert Uytterhoeven wrote:
>
> On Tue, 28 Jul 1998, Sid Boyce wrote:
> > Martin Mares wrote:
> > No, you have selected a _text_ mode, so the normal text mode driver got used.
> >
> > Anyway, it seems your VGA doesn't support linear frame buffer :(
> > =====================================================
> > Sid Boyce writes:
> > Possibly wrong version, these are the reports I have for the Stealth 3D
> > 3000.........
> > [barrabas:/usr/src]# fbset -i
> >
> > mode "name"
> > # H: 20.703 kHz, V: 52.546 Hz
> > geometry 1056 344 1056 992 4
> > timings 39722 40 24 39 9 96 2
> > endmode
> >
> > Frame buffer device information:
> > Name : `VGA+'
> > Address : 0xb8000
> > Size : 32768
> > Type : CGA/EGA/VGA Color text
> ^^^^^^^^^^^^^^^^^^^^^^
> > Visual : PSEUDOCOLOR
> > XPanStep : 0
> > YPanStep : 8
> > YWrapStep : 0
> > LineLength : 264
> > Acceleration: None
>
> Thats VGA text mode, not a graphics mode!
>
> > -------------------------------------------------------
> > On Xfree86
> > ============
> > (--) S3V: PCI: ViRGE/VX rev 2, Linear FB @ 0xec000000
> > (--) S3V: chipset: ViRGE/VX rev. 2
> > (--) S3V: chipset driver: s3_ViRGE
> > (--) S3V: videoram: 4096k
> > (--) S3V: Ramdac type: s3_trio64
> > (--) S3V: Ramdac speed: 220 MHz (135 MHz for 32 bpp)
> > (--) S3V: Using Trio32/64 programmable clock (MCLK 54.886 MHz)
> > (--) S3V: Maximum allowed dot-clock: 135.000 MHz
>
> Whether your hardware supports a linear frame buffer and your software (video
> BIOS) supports a linear frame buffer are two different things.
>
> Greetings,
>
> Geert
I think you are right, I'll have a look at the BIOS settings to see if there is
anything relevant there, I have suspicions about this TopGun motherboard's BIOS,
it's supposed to support UDMA but it doesn't appear anywhere in the options as
mentioned in the manual, I can disable the PS/2 mouse port in the BIOS, but that
has no effect and there isn't a jumper on the board for it.
I emailed TopGun and got no reply, shortly afterwards their email address
disappeared from their site.
Regards
-- 
... Sid Boyce...Amdahl(Europe)...44-121 422 0375 
                   -----------------------------------
Any opinions expressed above are mine and do not necessarily represent
 the opinions or policies of Amdahl Corporation.


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