uhhyung@MANI.KAIST.AC.KR (Uhhyung Choi) (03/09/91)
Hello? I have some questions on PGA Compatibilities. IS PGA COMPATIBLE WITH CGA OR EGA? Any comments on this will be helpful. I'd prefer e-mails. Thanks. Uhhyung Choi uhhyung@mani.kaist.ac.kr
mir@opera.chorus.fr (Adam Mirowski) (03/11/91)
In article <9103091404.AA02310@mani.kaist.ac.kr>, uhhyung@MANI.KAIST.AC.KR (Uhhyung Choi) writes:
%% I have some questions on PGA Compatibilities.
%% IS PGA COMPATIBLE WITH CGA OR EGA?
%% Any comments on this will be helpful.
IBM PGA was compatible with CGA only. Matrox had a PGA compatible board
that had a better text-mode CGA emulation (twice vertical resolution).
However, the compatibility is a bit peculiar: CGA screen can coexist
with the PGA screen, and you switch the display with a simple I/O
operation. Just as if you had two cards connected to a single display
through a switch.
Matrox CGA emulation wasn't very good in graphics mode. Microsoft Word
had problems with it.
--
Adam Mirowski, mir@chorus.fr (FRANCE), tel. +33 (1) 30-64-82-00 or 74
Chorus systemes, 6, av.Gustave Eiffel, 78182 Saint-Quentin-en-Yvelines CEDEX