GhstWlf wrote:I would like to use a Keyboard and a Mouse (TT keyboard?) that is only used with hatari and not shared with the host system.
Hatari just gets input events from SDL. If you have multiple e.g. USB keyboards, all of them should be usable for keyboard input, but I don't think SDL provides any keyboard identifier with which Hatari could detect which one is which.
GhstWlf wrote:Or you could fix the mouse problems in hatari. I mono and windowed, the mouse is almost useless.
And if your problem is which window has keyboard focus, another keyboard doesn't help with that at all.
I use fullscreen when I need to use mouse more (as it also removes other distractions), but if you don't want to use fullscreen mode, just toggle mouse grab.
If the default AltGr+m shortcut is awkward to use, you can bind it to another key in hatari configuration file. Easiest way to find the correct keycode for that is probably temporarily reconfiguring joystick keys and then just change in the config file the saved keycode from joystick entry to mouse grab. Hatari sources have also test binaries that can be used to find out correct SDL keycodes.