Re: low level graphics


dave frost wrote:
HI Lew,

That was one of the most useful responses iv had. In short, im a
curious sort and just want to fiddle with the silicone :-) svgalib isnt
an answer for me, ive written an X client and found the event interface
horrid and the api generally not nice. I have written a few small
kernel modules in the past so could hit the books again.

Thanks for the help, can you suggest any particularly useful books ? ill
do an amazon/etc search but if there are some you know are good id like
to know.
[snip]

Well, my resources are old, but you might look for a book in the "used
book stores" titled "Programmers Guide to the EGA and VGA cards" by
Richard F. Ferraro (Addison-Wesley, 1990, ISBN 0-201-57025-4)

Written for DOS environments, it detailed a lot of the low-level
programming that goes into running those types of cards. Nowadays,
libraries take care of that detail, so there are few books on how to
write that low a level of code.

As for doing this on Linux, you should take a look at the /source/ for
the svgalib library. You'll get a good idea of how to access video
memory from that, and see how the drawing primatives are implemented.
You can find the source for the latest svgalib at
http://www.svgalib.org/svgalib-1.4.3.tar.gz

HTH
--
Lew Pitcher

.

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