Welcome

Who are RISC OS Open Limited?

RISC OS Open Limited (ROOL) manages the source code to RISC OS. We are an organisation run on a largely voluntary basis. We also offer professional services to anyone who is interested in developing commercial products using the ARM architecture and RISC OS. You can find out more information about us here.

What is RISC OS?

RISC OS is a computer operating system designed in Cambridge, England by Acorn. First released in 1987, its origins can be traced back to the original team that developed the ARM microprocessor. RISC OS is owned by Castle Technology Ltd. You can find out more at sites such as RISCOSCode, riscos.info, The Icon Bar, My RISC OS and RISCOSitory.

If you are new to RISC OS, you might want to look at the introductory pages in our wiki here.

Latest news: Headlines

• Update on proposed RISC OS show (06-Jun-2013)
• A new RISC OS show? It’s free? I’m in! (29-May-2013)
• RISC OS Open at Wakefield 2013 (29-Mar-2013)
• Raspberry Pi release RC8 out now (25-Mar-2013)

Recent changes in CVS

• ROOL CVS: 2 changed components (19-Jun-2013)
• ROOL CVS: Fix for stuck in loop doing background transfers to floppies (19-Jun-2013)
• ROOL CVS: Fix for misreported errors from sleep_on_[tx|rx] (15-Jun-2013)
• ROOL CVS: Recreated products list from circa Jan 2012 (02-Jun-2013)