RISC OS 5.28 released; now supports Raspberry Pi 4. : r/linux
Raspberry PI Dhruv Shah aka Snypter. About Me Information Security Consultant Security Blogger – security-geek.in/blog/ Core area of interest : Web Application. - ppt download
RISC OS | Jon L. Aasenden
How to Install RISC OS on Raspberry Pi
Installing and Configuring RISC OS Operating System on Raspberry Pi 2 - YouTube