The VG Resource

I'm trying to rip Kirby's Block Ball using VBA, and I set the pause key to P and the frame advance key to O. I want it to advance a frame then pause the game again, but for whatever reason all it does when I press O is unpause the game. Asking for a solution to this problem.

Did you try exiting out then opening it back up? It helped me when I had a similar problem with BizHawk.