Pause is the correct way to pause the game, but if it's giving you crash issues, here are a few workarounds.
1. I rarely use pause, though I've seen it lock the game up one time when I left it paused for a long time (was probably approaching half an hour). I haven't had any problems when pausing for short times, if you use pause, try not to let it sit for too long.
2. In hyperspace, the best way to "Pause" the game is to simply open your starmap. Time will not pass while in a star map. If you want a long pause, this is the best way.
3. If you're in an encounter, on on planet side, or really anywhere, and you just need to "pause" long enough to gather your thoughts on the next action, then simply keep moving your menu selection up and down while you think. The game is effectively paused as long as you keep moving your menu selection--this is very helpful in things like, combat or planet side when a lifeform is heading your way and you just want a few seconds breathing room to focus on which menu command you actually need to activate. I do this a LOT while playing both SFs, it's really helpful.
4. The above works in every menu *except* the main communications menu where you hail and terminate. However, if you want time to read what an alien just said, before they spew out another message, select Question, but DON'T pick a new question yet--the game pauses inside the Question menu, so that gives you time to finish reading the last response at your leisure.
5. Finally, I may be remembering incorrectly since I never use it, but I believe DOSBox itself has it's own pause feature. I don't remember the key combination, but if you look at DOSBoxe's readme that lists all the keys, it should be there.
Post edited May 12, 2013 by seir