This is so cool it makes me want to get another cart just to try it.
As it stands, I actually need the cheat-code function for a project I'm doing. But damn, if they can get the cheat-code/backup memory part to work, I'll be all over it.
It's been a long time since I looked at Saturn mod-chips, but 10 years ago, you pretty much needed to have a model-2 system with a certain type of CD drive. This is too bad, because model 1 systems at cheaper, at least when it comes to Japanese Saturns.
Right now, I've got a mod chip in a system with a dead cart port. But I've also got a backup Saturn in the wings, and if this works, I won't have to worry about transferring the mod.