amiberry VS ArduinoFloppyDiskReader

Should be possible. It seems to be open source, you'll just need to compile it in Termux: https://github.com/BlitterStudio/amiberry

A500 Mini is just an overpriced, very low end device that runs Amiberry, designed to extract money from suckers.

If you edit/change the contents of the whdload_db.xml file inside the boot-data.zip then you can change the per-game settings. I don't know what all the possible settings are but you should be able to make it boot to an Amiga4000-like config (or at least with a faster CPU). Some more details about this at https://github.com/BlitterStudio/amiberry/wiki/WHDLoad-Auto-booting

However, I don't know how to tell the A500mini (or more specifically, the amiberry version running on it) to use these arguments. I've figured out that after opening the game options, a file called "Historyline_v1.5_1569_ol.uae" is created on the USB drive. Based on information found elsewhere, I have manually added the following line to this file:

They're just making money off Amiberry, an easy to use Amiga emulation solution for Raspberry Pi.

I recommend updating the WHDLoad DB XML file in the TheA500 folder. It's in one of the sub folders. The latest XML file can be found here - https://github.com/midwan/amiberry/blob/master/whdboot/game-data/whdload_db.xml.

Also have a look at drawbridge which even supports live loading Amiga disks in an emulator. https://amiga.robsmithdev.co.uk/

For more info: https://amiga.robsmithdev.co.uk/

You can convert a cheap USB floppy drive into one that reads Amiga disks using a Drawbridge from https://amiga.robsmithdev.co.uk/ - I've done this and it works.

This seems to be Rob's official site?

For the second case I recommend Rob Smith's DrawBridge (previously known as ArduinoFloppyDiskReader): https://amiga.robsmithdev.co.uk/ It's a simple arduino-based project, which allows you to use a regular PC floppy drive to write (and read) amiga disk images. You can make your own, or wait your turn for Rob to sell you one pre-assembled. I made my own and it works great.

Forget the a500 mini, it's not worth your time. You can use this cheap contraption to grab images of all your old floppy disks: https://amiga.robsmithdev.co.uk/ and just load them up on an emulator like fs-uae, winuae, or whatever, which you can run on any PC you like. The A500mini is just an ARM computer in an amiga-shaped box running the same emulator, without a keyboard, without giving you all the options the emulator can handle, and you have to pay for it... The point approaches 0 pretty fast.