Controller and Hatari Menu (And Changing Floppy Disk)
The Hatari menu can be accessed using the default controller button “Y” when the core is loaded (IE during a game" (i was using a PlayStation 4 controller and it was the square button for me)
Once in the menu I found a real mouse is not usable, however you can press “select” on your controller to switch to mouse mode (there is also another button to display the mouse speed “ms” and another to change it), now you can navigate the menu.
The menu can be used to change your system settings, here you can;
Point to new TOS images
Change the CPU & the amount of memory (needed sometimes to get some games working, dropping to 512k can help with some earlier games)
Change floppy disks, “YOU WILL DO THIS A LOT WITH SOME GAMES” When the first game disk is loaded you can then access the Hatari menu, go to the “Floppy” Menu and then browse to a new disk to put into a drive (A or B). It is important that you choose not to reset the system when exiting the Hatari menu if still in a game (this is not selected by default , so you will be fine).
Add a HDD not really needed (for die hard Atari fans).
Change Keyboard and Joystick settings.
Change the screen size (Warning Hatari is strict when it comes to aspect ratios it will always want to use the available resolutions of 1990s Monitors, with a little tweaking you can get it to fill most of your modern screen)
Change the sound chip settings (don’t touch unless you know what you’re doing)
There is also a save state option in the memory menu (Save state is not available directly from Lakka for Hatari, but it is inside the emulator )
Once you have finished setting up your settings you can now save them using the save config button , rather than use the default location of /storage/.hatari/hatari.cfg I would navigate back to your initial basic config file /storage/hatari.cfg as it is more accessible and visible, Note if you like, you can have as many config files as you want, as long as you remember where you put them , "The Immortal (one of the hardest games ever made), for instance, needs its memory setting back to 512k with a 68000 cpu in st mode 1.02 TOS, so why not create an “immortal.cfg” with the right system settings and floppy already in the drive, then you can load it and it is all just done.