I'm not sure what the state of Pi 5 support is, but RISC OS seems to work on the Pi 1, 2, 3 and 4.
ArcEm is a decent emulator for the Archimedes series, and RPCem is the equivalent for the RiscPC which succeeded it. OS ROM images are available from a variety of places.
For floppy disk emulation, ADFFS is what you are looking for, and some games have been released in this format with the consent of the copyright holders.
ArcEm is a decent emulator for the Archimedes series, and RPCem is the equivalent for the RiscPC which succeeded it. OS ROM images are available from a variety of places.
For floppy disk emulation, ADFFS is what you are looking for, and some games have been released in this format with the consent of the copyright holders.