This release is all about fixes to the NES code. I've made some structural changes to the 6502 which corrected a bunch of problems (e.g. Battletoads) and added a few mappers. A bunch of the fixes are due to removing some unsafe speed optimizations. The overall speed is still plenty fast, so it was worth doing. The new code now supports the following mappers: 0, 1, 2, 3, 4, 7, 9, 10, 11, 16, 19, 33, 67, 68, 69, 70, 71, 87, 93, 160, 180. Mappers 64, 65, 66, 232, and 116 appear to be supported as well. I've also fixed the NES load/save code, but the fix required that I change the SAV files. Please delete all of your old SAV files (the BAK files haven't changed, you can still use the old ones).