[net.graphics] ATT Targa-xx

chapman@fornax.uucp (John Chapman) (09/09/86)

We have had news problems so if you have seen a previous posting of these
articles by myself I apologize, but I would like to get any info. that is
floating around out there.
----------------------------------------------------------------------------


> I called AT&T for some information about their TrueVision High Color
> Resolution Imaging products.  For anyone interested, here is the info
> taken mostly verbatim from the AT&T brochure.  It is probably biased
> but at least it's not copyrighted.
> All of these boards are for the IBM (PC, XT, AT) and compatibles.
> Has anyone out there tried any of these boards with or without AT&T's
> software?  I'm looking for a review.
> <other interesting stuff>

I too would really like to see a review as I'm seriously considering buying
one of these boards - particularly since it will be with my own $$.

One thing I'd like to know is whether or not the Targa-16 (or others)
have colour lookup tables so you can do gamma correction - if not has
ATT tried any kind of 'average' gamma compensation on the rgb outputs
in the board design?

Also I assume the 512k of the 16 is not mapped in one window into the
pc's addressing space - so how big is the window and how do you switch
it?

What other parameters can you control on the board?

Is it possible to upgrade a 16 to the other (24,32) versions?

Thanks in advance for any info,

				john chapman

...{watmath,ihnp4,uw-beaver}!ubc-vision!sfucmpt!sfulccr!chapman