How can I change key bindings in MAMP using "and"/"not" logic?

Question

How can I use and not logic in mame hotkeys? I figured out how to set or, by just setting new and new hotkeys. But and and not?

Also, where the hotkeys are stored, how to backup them?

Answer 1

To make a keybinding with AND, press enter, then press both keys you want to set. It will then be presented as KEY1 KEY2.

To make a keybinding with OR, press enter, press the key you want to bind and allow it to set. Press enter again and press the second key. It will present as KEY1 OR KEY2

To make a keybinding with NOT, press enter, press the key you want to bind then press the next key twice quickly. It will present as KEY1 NOT KEY2

The keybindings are stored in the cfg directory in a file named default.cfg.