Virge and TV-out

[Alex Deucher]

On 10/31/06, Adam Sulmicki <adam at cfar.umd.edu> wrote:
> >
> > There are virge databooks flaoting around, however, I don't recall if
> > the virge had integrated tv-out or not.  I suspect it used an external
> > tv-encoder.  If so you'd have to figure out what chip was used and how
> > it was controlled.  You should be able to identify the tv-encoder on
> > the board itself.  Assuming the bios interface hasn't changed, you may
> > be able to hack the s3switch utility for savages to work on the virge.
>
> Well, the s3switch more or less works (or at least does not seems to be
> outright broken) . That is doing "s3switch tv pal" show screen resetnig
> and starting in some other mode. Starting X after that is only slightly
> less confused, but still not what it ought to be.
>

You'll need to run s3switch after starting X since the X driver
programs the hardware directly.  It may not work since I don't know
what state the bios thinks it's in after the X driver writes the mode
to the hardware.  In which case you'd probably have to add bios mode
setting support to the driver for s3switch to work.

> # s3switch
> Devices attached:  CRT TV
> Devices active:   none
>
> Current TV format is NTSC
>
> # s3switch tv pal
> Devices attached:  CRT TV
> Devices active:   none
>
> Current TV format is NTSC
>
> the chips are :
>
>          14052B (M) XAC810
>          f P85DJ 74F125
>          S3 ViRGE/GX2 On Board N6P0IB 86C357
>
> the pictures are :
>          http://www.missl.cs.umd.edu:/~adam/IMG_6701.JPG

maybe one of these... The GX2 might have gotten integrated tv-out
though.  not sure.

>          http://www.missl.cs.umd.edu:/~adam/IMG_6702.JPG

this is the virge itself.

>          http://www.missl.cs.umd.edu:/~adam/IMG_6704.JPG

These are ram.

>          http://www.missl.cs.umd.edu:/~adam/IMG_6705.JPG
>          http://www.missl.cs.umd.edu:/~adam/IMG_6706.JPG
>
>

Alex

>
> --
> Adam Sulmicki
> http://www.eax.com      The Supreme Headquarters of the 32 bit registers
>