I am probably mixing up versions of the hardware. They made these for the Sega later on too and I had one of those too. You could hit a key combo to bring up a menu while the game was running then you could search for specific values then "tag" them to watch for changes. At least that's how I remember it working.
I still used the one with the NES but right now I can't remember if it could do the same thing or if that was just the sega one later on.
I feel ripped off that I am only hearing about this now. I would have used the shit out of that.
I really hope all of that hardware is sitting in a storage bin somewhere in my parents house. Probably not. If so, it would be really great to get it working again and to see if I have all of the old cheatcodes and stuff still.
I hope it is still there and not the victim of a garage/yard sale that they never told you about.
(post is archived)