Old EGA games specification

What are specification of old EGA games? I want to make platformer that looks (that part I got covered) and plays (with that you need to help me) like old DOS EGA game. Think Apogee era platformers (if you are old enough to remember it - I’m not but played quite few).

I need specifically:

  • Resolution. I think it was like 320x200, but not sure
  • Framerate. It needs to be as choppy as old DOS game to retain feel of old game. Think first or second Duke Nukem (not 3D shooter, platformer that was before it).

Rest I can do on my own. I already have EGA palette in GIMP so making gfx won’t be a problem.