How to change consoles or list all workable games on pfba version 1.57

[kdubb1977]

I've tried pressing start on main menu but it just scrolls through the games. It says that I've got a lot of games on the emulator but it does not show them all so I can't choose any of them. I noticed none of my megadrive, sms, or sg1000 games are not showing up therefore inaccessible. please tell me how to switch consoles so I can access them or at least tell me how I can get all my workable games on the emulator.