Welcome aboard, Cmileski24.
You'll need an
analog encoder like the one in KADESTICK (see sig.) and an analog joystick like
this or similar. (Amazon is currently out-of-stock on the one I used in KADESTICK.)
Just tried John Elway's Team Quarterback (teamqb) with the KADESTICK and it works if you quickly push the stick forward far enough to trigger a pass. (Never played on a dedicated machine so I'm not sure how it compares.
)
Be sure to clear all the the "analog dec" and "analog inc" inputs (press Enter then ESC to set each one to "none") so the 8-way joystick commands don't overlap with the analog joystick inputs.
You might be able to remove the Y-axis centering springs from the analog joystick and use just one spring to pull the stick forward as shown in your diagram
or calibrate the stick in windows so that the encoder thinks that the stick is forward when centered.
Scott