Other RISC OS: 35-year-old original Arm operating system is alive and well

[J65nko]

From https://www.theregister.com/2022/06/21/risc_os_35/

RISC OS, the operating system of the original Arm computer, the Acorn Archimedes, is still very much alive – and doing relatively well for its age.

[snip]

One fork of RISC OS still supports Acorn-era Arm's odd 26-bit mode, meaning that today it mostly runs on the commercial Virtual Acorn emulator.

The other branch, designed for the 32-bit mode of more recent Arm chips, is now owned by RISC OS Developments, which made it fully open source back in 2018. Development and maintenance is done by the team at RISC OS Open Ltd – ROOL for short – which offers downloads for a variety of current Arm hardware, such as the Titanium desktops.

[snip]

RISC OS Developments are still working on new functionality for the OS. Notably, it recently released a new TCP/IP stack, derived from OpenBSD. Right now, the main benefit is IPv6 support. A feature more significant to most users is still in development: Wi-Fi support.