19 Dec
2006
19 Dec
'06
5:52 p.m.
On Dec 19, 2006, at 2:37 PM, Chris M wrote:
--- Jim Leonard <trixter at oldskool.org> wrote:
There are two separate things, the Truevision TARGA family of frame
grab and true-color display boards (progenitor of the .TGA format),
and the later family of display-list based graphics accelerators
known collectively as TIGA, which featured the TI 340x0 processor,
were made by many different vendors, and were frequently 8514/A
compatible. The two have virtually nothing in common apart from they
both describe ISA-bus hardware capable of displaying raster images to
a color display.
Other helpful information:
The Electronic Photography and Imaging Center was spun off of AT&T in
1987 and became Truevision; the original TARGA hardware were
apparently AT&T branded.
.TGA supports up to 32-bpp data (24 bits of color, 8 bits of alpha).
Apropos of nothing in particular, I love how people on this list
spout off half-cocked about stuff they think they might vaguely
remember a little bit, maybe, and rarely bother to do even a tiny bit
of fact checking first.
ok
bear
Kelly Leavitt wrote:
So no one can confirm if the thing used the 34010 or
not? I remeber the AT&T TARGA. Output was to a RGB
monitor. Input via tablet with a puck and a wand.
They had it running on a Wyse PC/286. I wrote a
converter to the Amiga IFF and PC GIF, but I can't
find the source any more.
I worked on one of those; some small investigation
showed that the .TGA
files were 16-bit raw with a header (ie. no
compression). Can't
remember if it was 5-5-5 or 5-6-5 but would be very
easy to test based
on the output of the converter...