RISC OS, frosted — ROMs, desktops and documentation from RISC OS Technologies

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RISC OS One Library

Guides for RISC OS One, and where to find the RISC OS 5 programmer documentation.

Getting started with RISC OS One

Downloads – pick the Frosted ROM for your Raspberry Pi, Iyonix, iMX6 board or Titanium.
The Frosted theme ships as a !ThemeDefs package with three wallpapers and !Fonts; merge it with your existing !Boot.
The Frosted HardDisc4 image includes PackMan, !PlingStore, ChatCube, StrongED and AcornSSL 1.07.
Keep secure browsing working with the latest !CA certificates bundle.

Programmer’s Reference Manuals

The RISC OS 5 Programmer’s Reference Manuals are published online by RISC OS Open Ltd:
RISC OS 5 Programmer’s Reference Manuals

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Created on September 11, 2026 17:18:12 by RISC OS One?

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Programmer's Reference

Find the RISC OS 5 Programmer's Reference Manuals and RISC OS One guides in the Library.

RISC OS Technologies

RISC OS One is built and maintained by RISC OS Technologies. About us · Contact

RISC OS IPR

RISC OS is an open source operating system owned by RISC OS Developments Ltd and licensed primarily under the Apache 2.0 licence.