Here's the first (hopefully) of videos intended to help you setup your Atari ST emulator to successfully run and play Wolfenstein 3D. It has been tested on both the STeem and Hatari emulators. The same specifications for the game should work on either. Additionally, if you are fortunate enough to have an actual Atari 16bit system, the specifications here should help you decide how to configure your hardware as well.
For complete instructions and a walkthrough
watch the video below