A simulator for Activision's PITFALL! for the Atari 2600. I converted the LFSR from 6502 code that David Crain wrote to generate the maps.
JSZeddy, by Erik Olofsen based on JSSpeccy and Z81 emus.
For programs that don’t auto-run, press R then ENTER.
Also you may need to click on the applet to enable keyboard entry.