I believe it just task switchs.. i.e. you can stop in the middle of the game and go back to the shell. Same concept as Windows 3.0 on the XT. It isn't really possible to run more than two programs at the same time. Matt Johnson > How is multitasking accomplished in TSE for the 83+? Can that same method, > or a similar one be used on the 86? If so, why has no one done it? > >