A delicious custom walnut Chimera for a customer at the #RISCOSLondonShow2025 The photos really don't do it justice. #RISC_OS #custombuild

This weekend in LONDON you can visit the RISC OS Show 2025. RISC OS is in many ways the inspiration for ULTRA OS. Mayor part of the RISC OS UI will be taken over like the three button mouse. #RISC_OS #computershow #LONDON #2025

A note on my #UltimaVM for #RISC_OS users: when coding on Ultima, we don't care about RO multistasking, we just code like on Windows/Linux/macOS. If we want to run an Ultima App in the desktop we just use the `--mt` option in the command line👇

Come and see our #ECOS Companion devices for #risc_os, and see how you can run responsive alternative operating systems alongside your favourite OS. Order yours at the Show! #riscoscompanions #riscoslondonshow2025 #InternalOrExternal

My secondary school had Acorn Archimedes computers, which was such a common sight in British schools back in the day. These machines were a big part of our education—from using the unique RISC OS to playing games at breaktime. It's wild to think that the same ARM architecture

Only 20 days to the #RISC_OS London Show! And Next @RISCOSitory post about it:

I may be up to something.... #redfunctionkeys #acorn #RISC_OS

Newsflash: It's 2025, and Fortran gets released for RISC OS. #ARM #Retro #AcornComputers #OpenSource #RISC_OS

Exclusive: see it working with your RISCOSbits #RISC_OS #FreeNVMe or #FAST system at tomorrow's @rougol London Show: https://t.co/52o1vd9FVi

What an incredible day at the past #risc_os London show! https://t.co/ouQFfkSNIR #riscos #OpenSource #technology

RISC OS (Reduced Instrcution Set Computer Operating System) – an OS for desktop computers running ARM processors. RISC OS was originally developed by Acorn Computers Ltd in Cambridge, England has been in continual... https://t.co/RiNv4xflRl #operatingsystem #riscos

Join us tomorrow at 4pm for the announcements revealing our two new versatile companion systems! #companions #RISC_OS #NotRISC_OS #RISC_OSmultiverse #64bit #ECOSplus

Memory Image (re-sized) - Back in April 2006 what was I trying to do! Looks like I had 3 Operation Systems nested? Mac, PC & a virtual Acorn with RISC OS ? A bit of an 'Flowers for Algernon' experience as I don't think I could do that now!

A bit of a wasted afternoon, but I managed all this with two CM4001008s (and a completely unnecessary 256GB NVMe drive). #overkill #frugal #RISC_OS

Archive Magazine Oct/Nov 2025 issue is out now! Archive is the magazine for RISC OS users. It's not too late to subscribe and get the latest issue - see https://t.co/ADSo7ZdhwA for details. Worldwide subscriptions available! #riscos #raspberypi #opensource

See and buy our new #FASTNVMeXL system with our #FreeNVMe drivers, and a whopping 8GB RAM usable under #RISC_OS. Sleek, smooth, and very cool! #risc_os #riscoslondonshow2025 #WhatWillYouDoWithIt?

This weekend I had some time to continue working on Project Merlin, so progress tracking update!: https://t.co/wWGUfLCl97 #RISC_OS #riscos #kernel #rust #rustlang

We're making the #RISC_OS case for wood! Or should that be 'we're making a wood case for RISC OS'... See them in the (tree) flesh on Saturday at the @rougol #riscoslondonshow2025 this Saturday.

Come and join the fun at London's premier computer show this Saturday. From Retro Acorn Computers to the latest Raspberry Pi. #ARM #Computers #Rockchip #Titanium #FAST #OpenSource #RISC_OS https://t.co/PNinUek8B6