No, I did this entirely on my own. I guess it might seem aloof or something, but I simply enjoy figuring stuff out and finding solutions for difficult problems. Asking for help would be kind of cheating. But then of course I did rely big time on a lot of previous work by other people. Tursi's comments on GROMs given to somebody else were particularly helpful, and for a lot of other TI internals AtariAge had been a gold mine.
The FG will work with QIs just as other carts, i.e., ROMs won't. But then I think you could add a GROM wrapper around those images so that they'll show in the menu. The FG would make that easier.
I didn't dare to test GROM 0-2 yet, with or without the console GROMs present. Technically, they're supported, but I haven't tested what would happen.
Can't say for now. Personally I find SD cards extremely comfortable and much preferred to cables, but sure, if it's not a big deal, why not? I'll get back to you about this idea.
Yes, it's working quite well with a flat solder tip, although I did trash the first five boards (both by hand and with a small Chinese reflow oven).
Both sound great! I'll definitely get in touch with you!
Cheat codes would be a matter of modifying the images, as are ROM images for QI consoles. It's not a FinalCartridge (or whatever they were called) ...
MESS carts are just cart dumps, so they work. n fact, what you see in the video are unzipped MESS rpk's. Zipped files, however, cannot be supported, as there's simply not enough RAM to uncompress them. Maybe one could use uncompressed ZIPs, but I don't think it's really worth the effort.
Printed carts are kind of difficult, as could be seen with the FlashROM. But some people are very good at finding empty standard shells, and maybe they'll provide some for us.