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

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

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

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

You'll be upset, too, if you miss it! Exclusively available at the #RISC_OS @rougol Show! #riscoslondonshow2025

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

It's touch and go, but will we have a Pi9home (brew) ready to show at the #riscoslondonshow2025? #risc_os #justbecause #notrealbutbetterthanapokeintheeye

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

RISC OS London Show - 25th October - Kenton, London, UK. We'll be providing a soundtrack with AMCS - the Advanced Music Construction System on the Acorn Archimedes A3000 and other ARM devices as a project descended from RISC OS. Full details >

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

Coast at your desk with our Show exclusive Welsh Slate Drink Mats (with rubber pads to avoid scratching!). At a bargain price of £5 each. Limited stock, so hurry up to the RISCOSbits stand! #CoastingWithRISC_OS #RISC_OS #AcornComputers #riscoslondonshow2025

Now under #RISC_OS control... see the control software in action at the @rougol Show. #riscoslondonshow2025

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

I have a nice Sieve Benchmark for integer math comparison of old computers (running on 8bit Atari, AmigaOS, WinCE, UNIX, DOS, RISC OS...) but I wanted also something to compare my Itanium, PA-RISC, Alpha AXP workstations in floating-point focused tasks. What about fractals?😅

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 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👇

Smooth realtime resizing in all directions with OWB for #RISC_OS. Soon available for download.

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.