Feeds

Strong ARM: The Acorn Archimedes is 25

The first ARM computer

Business security measures using SSL

Arthur

The first machines shipped with Arthur 0.2, rapidly followed by 0.3 and soon updated to 1.2. Arthur was developed by a team headed by Paul Fellows – their work would be continued by William Stoye's group after Arthur became Risc OS. This being the era of Rom storage – of which the Archimedes has 512KB, on four chips – updating the OS required opening the machine's casing, removing the current Rom chips and replacing them with new ones.

Curiously, Acorn wanted its Arthur 0.2 Roms back, but users were free to bin chips holding version 0.3. Does anyone know why?

Arthur UI. Source: Matthew Pye

Arthur's Archimedes Desktop Manager
Source: Matthew Pye

Arthur comprised two parts: one for the machine itself, the other, separate, for the storage. That allowed Acorn to offer multiple filing systems. Two were supplied with the original Archimedes: ADFS (Advanced Disk Filing System), a revised version of the ADFS that shipped with the BBC Master, and ANFS (Advanced Network Filing System), to be used to access server-hosted files over Acorn's Econet network tech. Users could switch from one to the other and back again at the command line.

Eschewing filename extensions, Arthur was coded to map files to applications, allowing you to key in a filename and have the correct software load it up for viewing, editing or running.

Windows, Icons, Mouse

Unlike others operating systems, most notably MS-DOS – by now six years old – and CPM (even older), Arthur could load multiple files to different memory addresses.

Not that most users delved into this command-line jiggery pokery – the Archimedes hid it all behind its own colour graphical user interface, called Archimedes Desktop Manager, of the kind already seen on the Mac and in the early forms of Windows and Gem, but here written in… BBC Basic.

Advertising Risc OS. Source: Wikimedia

Advertising Archimedes' GUI
Source: Wikimedia

The Archimedes had a mouse too, and one that followed the WIMP UI pioneer Xerox's three-button layout: Select, Menu and Adjust.

To maintain compatibility with the BBC micros, Acorn equipped the Archimedes with 65EMU, a 6502 emulator. To offer Beeb buffs some extra familiarity, the A300 series' keyboard function keys were coloured red, as per the BBC Micro.

Secure remote control for conventional and virtual desktops

More from The Register

next story
Oi, Tim Cook. Apple Watch. I DARE you to tell me, IN PERSON, that it's secure
State attorney demands Apple CEO bows the knee to him
4K-ing excellent TV is on its way ... in its own sweet time, natch
For decades Hollywood actually binned its 4K files. Doh!
Phones 4u website DIES as wounded mobe retailer struggles to stay above water
Founder blames 'ruthless network partners' for implosion
DARPA-backed jetpack prototype built to make soldiers run faster
4 Minute Mile project hatched to speed up tired troops
Hey, Mac fanbois. HGST wants you drooling over its HUGE desktop RACK
What vast digital media repository could possibly need 64 TERABYTES?
Apple's Watch is basically electric perfume
It isn't just me-too Apple that's lost its lustre: Gadget mania is over
In a spin: Samsung accuses LG exec of washing machine SABOTAGE
Rival electronic giant tries to iron out allegations
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
Protecting users from Firesheep and other Sidejacking attacks with SSL
Discussing the vulnerabilities inherent in Wi-Fi networks, and how using TLS/SSL for your entire site will assure security.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.