Can any of you board fixers tell which chip(s) on a SF2 Hyper Fighting B board has to do with the controls- more specifically the Player 1 button. Initially I swapped "A' and C" boards because I didn't know where the chip for controls were located, but narrowed it down to be on the "B" board. Everything seems to work on the board except the player 1 button. Test mode also confirms this.