First post, by arromdee3
Dosbox 0.72, Mandriva Linux 2009, machine set to CGA
http://www.oldskool.org/pc/cgacomp
Run this, under M6845 compatibility, "textmode row reprogramming". This mode doesn't seem to work properly--it remains at 25 rows. It claims that the mode is used for several games; searching for the games here brought up some complaints, but they were several years old and I don't have any of the games to test myself anyway.
I have no idea if the program isn't coded properly or if it's an actual problem.