After taking a poll on here I've decided make an adapter to use any NES controller on a turbographx.
This will be my running log for the project.
Currently I've bought all the parts I'll need to start prototyping and have about 3/4 of the code written. Unfortunately I don't have a Turbografx-16, so that will be my next task. To bad I can't just rent one at my local video store.
Looking forward, I'm not sure what ill do with the adpater once its made. Maybe this would work on kickstarter, but I'm not sure.