i did this a lot awhile back
if anyone wants it,
here's a .rar filewith a bunch of saved corruption settings for a few games. i spent a long time on kirby's adventure. got a few good ones. you'll have to change the paths and things, but that shouldn't be too much an issue
Whenever i change the "every _th byte" and "add _to byte" values nothing strange happens. Am i putting these numbers too low or something?
i usually put every ~1750th byte and add 3. set to auto-end and increase start by 1000 until you start seeing interesting things and then increase by 100 and then 50 and so on