I've ran into some game images that I can't run on my real 800XL using my AtariMax SIO2PC-USB. One example is Star Raiders II xex files using the AtariMax Loader. I've checked all the big file repositories, at least 15 different versions (or at least different filenames), and I can't find one that will work. I'm sure I'll eventually be able to come up with an ATR that will work, but I'm wanting to run many of the original ROM images I have. Would those work better from one of the AtariMax cartridge-based products? I guess what I'm asking is, do they just allow you to have access to hundreds of files, or do they actually emulate an Atari cartridge? If they emulate an Atari cartridge, which product would I need? I see Steve has several cartridge-based products available.