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- From: johnk@cs.utexas.edu (John Knutson)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: TIGA video board, anyone?, You Betcha!!
- Date: 27 Jan 1993 08:50:47 -0600
- Organization: CS Dept, University of Texas at Austin
- Lines: 59
- Message-ID: <lmd8a7INNmqm@latexo.cs.utexas.edu>
- References: <1993Jan25.153206.1@sscvx1.ssc.gov> <C1ICop.Hz@brunel.ac.uk>
- NNTP-Posting-Host: latexo.cs.utexas.edu
-
- In article <C1ICop.Hz@brunel.ac.uk> ma90alb@brunel.ac.uk (Ashley L Brandwood) writes:
- >schludermann@sscvx1.ssc.gov wrote:
- >: In article <C1DxDv.BEr@austin.ibm.com>, oquinn@elder.austin.ibm.com (Jim O) writes:
- >: > 1) Is TIGA still around, if so how to I get in touch with them.
- >
- >: I think it's still alive and well. I just bought a TMS34020-40 w/TMS34082-40
- >
- >They are definitely around.
-
- "TIGA" isn't a company, it's an acronym for "Texas Instruments
- Graphics Architecture", and yes, TI is definitely still around.
-
-
- >The performance is out standing, due to the fact that the TMS340?0 chips are
- >full graphics co-processors, (not like S3 based video cards which are windows
- >optimised ) this means basically if the processor wants to draw a circle (for
- >instance), it sends the card the center of the circle, and it radius and colour
- >and lets the card draw the circle, rather than transfering a picture of the
- >circle to the card.
-
- Well there are two things to remember, hardware implementation isn't
- always faster than software implementation. For example, the loop
- instruction on the '486 uses more clock cycles than using an
- increment-compare-branch instruction sequence would to do the same
- job.
-
- Another thing to know is that the TMS340 only has instructions for
- drawing lines as far as geometrical entities goes. circle (and other
- polygon) drawing will have to be done by software. (I could be wrong,
- I might have missed the instruction while scanning my 340 user's
- guide) What it does have, is built in bit block transferring.
-
- >If you are really rich and can afford the expense, it is definitely worth
- >getting a TMS34020 with its own co-processor TMS34082 board (as this makes it
- >rediculously fast)
-
- FYI: the 34082 is an FPU (for those who didn't know)
-
- >It should be able to work at all standard SVGA resolutions/colours and
- >probably a lot more (like some are capable of >2048 resolutions) and upto
- >24-bit colour.
-
- The 34020 is capable of 1,2,4,8,16, and 32-bit color, the 34010 is
- only capable of up to 16 bit color. The resolution is really dependant
- on how much VRAM you have connected to it. (and what your monitor's
- capable of)
-
- I'm rambling, I know. If anyone really cares, I've got the 34020 and
- 34010 user's guide if you have any questions.
-
-
- Disclaimer: I'm not affiliated with TI, I'm just a satisfied customer.
-
-
- --
- John Knutson (johnk@cs.utexas.edu)
- "A lot of people I know believe in positive thinking, and so
- do I. I believe everything positively stinks."
- -- Lew Col
-