Thank you so much for the information. It really helps knowing that I can look in the XML files to get some answers.
However you have shown me that this is WAY to big of a pain in the ass to make work LOL. Finding the ROM file for the Supercharger (scharger.zip) has turned up goose eggs on the dozen of so sites I've used over the years. Then on top of that, trying to find the cassette versions of the games didn't get anywhere either. Using the .a26 files on Stella has worked for literally over 20 years without the gymnastics, I can only figure that since the MAME team is hell bent on historical emulation, that I can understand the design reasons. For my purposes, which is just enjoying the games, I personally could care less .
Again please don't think I am unappreciative, I am OVERWHELMINGLY appreciative, but sometimes the correct answer is not the answer your looking for, and in this case the answer appears to be is "Don't use MAME" 🤣
Thank you,
Don