6.14) What graphics enhancements are there for the Atari?

Subject: 6.14) What graphics enhancements are there for the Atari?

This section by Andreas Magenheimer.

- some 80 column interfaces made by Atari and third parties. Allthough
these interfaces are there to provide a better text display with 80
chars. per line, they can somehow be used as a simple graphic
enhancement; think I have seen a graphic demo for the XEP-80 device
somewhere, that used a higher graphic resolution in Gr. 0 or Gr. 8
and also provided some animation (not only text, but also graphics),
alas I don`t remember the name of that demo...;
- the ultra-rare 1090XL box and probably graphic cards for it (who-ever
owns this item, doesn't use it, who-ever would like to have + use it,
doesn't own it or cannot afford it!);
- more seriously: Antic and GTIA upgrade by Chuck Steinman. Afaik, an
article about that topic appeared in Atari Classic, since I do not own
it, I can merely speculate that it adds a second Antic and GTIA for
higher resolution and/or more colours...;
- many selfmade upgrades, using graphic chips or graphic cards from other
computers...