RPCemu is much more modern: https://www.marutan.net/rpcemu/index.php https://www.marutan.net/rpcemu/index.php If you just want the OS on x86 with minimal hass

RPCemu is much more modern: https://www.marutan.net/rpcemu/index.php https://www.marutan.net/rpcemu/index.php If you just want the OS on x86 with minimal hassle there is also a commercial emulator: http://www.virtualacorn.co.uk/index2.htm http://www.virtualacorn.co.uk/index2.htm This company now owns the source code for one of the two forks of RISC OS. The other is now fully FOSS and runs natively on the Raspberry Pi: https://www.riscosopen.org/content/ https://www.riscosopen.org/content/ Here is a good beginner's distro of it: https://www.riscosdev.com/direct/ https://www.riscosdev.com/direct/