The RISC OS 5 Programmers Reference Manuals, commonly known as PRMs, are in the process of being made available online. The RISC OS 3 PRMs in PDF form is freely available at the Foundation Resources Area. A collection of "PRM-like unformation" is also available on Robin Watts’s Pink Noise Productions website.
|Available||Desktop, FileSwitch, Introduction, Non-kernel input/output, *Commands|
|WIP||Service Calls, SWI Calls, Tables|
All other links from this page are likely to be non-existent.