I was wondering what gams on the INTV, CV, and 5200 are fast action enough and use a keypad button where it would be wise to map from 1-4 special buttons on a 9-button fight stick. 5200 has 2 buttons, INTV has 3, CV has at most 4. The one I know is Mouse trap for CV and INTV, where the index button is dog, and the other 3 buttons can be the 3 doors. Defender might need it for simultaneous fire, smart bomb, and hyperspace. And other major ones that would be handy to have 4 action buttons and 4 other keypad buttons in GAMEPLAY (not menu selection). I also have and extra button for 5200 pause/CV Star for pausing.
Any other games that need quick access to an extra button? If so, which buttons? I need to know to see if there are common mapping patterns that work well for the purposes of button and pin mapping. I know a Jaguar uses 1,3,4,5 and 6 for L R Z Y and X. So you don't have to ruin a pro controller to have a fight stick.
Also I'm using a 9-pin or 15 pin Y adapter for plugging a keypad simultaneously into my fight stick, so I don't need access to every key to be mapped to a button.