Hey none of the linx (4 Dave/Dave2) r working!!
Here's one that worked 4 me:
*www.dosgamesarchive.com/download/game/105
And here's an index of pages that give cheatcodes :
*www.cheatserver.com/pc/Dangerous_Dave.html
Here's one I found on 1 of those pages:
Hold [F12] and press G for God mode.
And speaking abt DOS games, here's one for...POP!