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 specialist professional services to anyone who is interested in developing products around the Arm architecture or 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 RISC OS Developments Ltd. You can find out more at sites such as riscos.info, The Icon Bar and RISCOSitory. Also take a look at the printed RISC OS magazine, Archive, first published in the same year as the Arm launch.
If you are new to RISC OS you might want to look at the introductory pages in our wiki, or come along to one of the shows and user groups.
Latest news
- I’m floatin’ around in ABC (23-Jun-2022)
- Wakefield show ups sticks to Bradford (08-May-2022)
- Big Ben eXperience rings again (03-May-2022)
- A second great networking opportunity (18-Feb-2022)
Recent changes in GitLab
- Pushed to branch master in SciCalc (ROOL) – [551] Sign toggle not working with E notation (25-Jun-2022)
- Pushed to branch master in AsmUtils (Ben Avison) – Adapt clz (and family) to use CLZ instructions where available (25-Jun-2022)
- Pushed to branch master in RISC_OSLib (Ben Avison) – Tweak swis.h for older C standards (16-Jun-2022)
- Pushed to branch master in CI_Source (Ben Avison) – Disapply copyright checking from Resources directories (16-Jun-2022)
