I knew about the code books (subscribed and had them all delivered as soon as they were printed) and whatever ones could be found in magazines at the time.
Making my own codes: the suggested way was to write down codes that you randomly generated, enter them, play the game and look for things that had changed. How were you monitoring the memory address or whatever you were doing to be able find a code?
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.
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