There were (still are) a lot of cartridges for the PCjr. Many of the games came on these cartridges so that Junior's internal memory could be taken advantage of. Also second parties came out with "quick boot" cartridges that would speedup the booting process. There was one called "jr Video" and also one that had another BIOS on it for a hard drive set up. The BASIC cartridges are still in demand. Does this help anyone ot there?? Louie Levy Eugene PCjr Club Newsletter Editor www.efn.org/~pcjrclub