I just finished deeper check all games which i have for GBA and all is working fine with BIOS.

But i have one question and found one minor bug.

For GameBoy and GameBoy Color neither screenshots nor snapshots are not available. Also [TAB] is not working. Is planned to add at least sceenshot option and [TAB] wit screenshot option?

And this minor bug is about saves in GameBoy (*.GB). When save file is created, four symbols (.GBA or .GBC) is removed and .sav is added, but in .GB it's still four letter. It means that last letter from filename (not suffix) is also removed. It can cause rare bug, e.g. for both "Game1.GB" and "Game2.GB" same file "Game.sav" may be ceated.