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The PC ‘won’, simply because IBM chose it in its personal computer, though Intel being early into the 16-bit era and having a good marketing dept helped a log It only started improving with the i386 (which again is object-code incompatible in 32-bit mode with its predecessors, forcing the processor to implement emulation modes to support the legacy code).Īll this has an impact on performance / development cost / wasted heat etc. It’s primary muck-up was its unprotected segmentation scheme which, calculating addresses as Segment*16+Offset meant it was incompatible with its protected mode descendant, the i286 which itself was messed up to the point where Bill Gates called it ‘brain-dead’. The x86, is simply, especially in its 8088/8086 incarnation is simply – a poor design, created because they had a customer who needed >64Kb of address space and their i432 project was going nowhere. ” the early machines outperformed the x86 architecture was that they had some trick up the sleeve”
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Obviously in such a clusterfuck, if you change one thing, you have to change everything, and so Amiga upgrades were more or less bolting on a whole other, software incompatible, computer on top of the existing one. It was totally unlike Amigas where the whole constellation of chips had to be present for anything to work at all, because the same chip that did audio also read the joystick buttons and the floppy drive, but for some strange reason did not read the mouse or joystick axis – that was delegated to the “GPU”, which in reality was only half of a GPU because the memory controller did half the graphics functions.
The trick is, you didn’t necessarily need them unless you had some special application, so you didn’t have to pay for them, and with most people opting to go without it also meant that the software was written to be compatible with the basic system and the PC could evolve into a more powerful system in a piecemeal fashion with every part replaced separately. The 8087 math processor, and the 8089 I/O processor. Posted in computer hacks Tagged acorn archimedes, archimedes, arm Post navigationĪnd the IBM PC also had co-processors. Sit back and enjoy the video, and if you were one of those kids in 1987, be proud that you sampled a little piece of the future before everyone else did.Īrchimedes header image: mikkohoo, ( CC BY-SA 4.0). If you would like to experience something close to an Archimedes you can do so with another computer from Cambridge, because RiscOS is available for the Raspberry Pi. All is not lost though, because of course we all know about their ARM joint venture which continues to this day. We’re told they can still be found in the broadcast industry, and until fairly recently they powered much of the electronic signage on British railways, but other than that the original source of machines has gone. Even one being used to power the famous Trojan Room Coffee Cam couldn’t save it from extinction. The Archimedes line and its successors continued to be available into the mid 1990s, but faded away along with Acorn through the decade.
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If you were that kid in 1987, you were in for a shock when you reached university and sat down in front of the early Windows versions, it would be quite a few years before mainstream computers matched your first GUI. We see the RiscOS operating system booting lightning-fast from ROM and still giving a good account of itself 20 years later even on a vintage Philips composite monitor.
The Trojan Room Coffee Cam Archimedes, on display at the Cambridge University Computing Department.
Familiar to owners of this era of hardware is the moment when a pile of floppies is leafed through to find one that still works, then we’re shown the defining game of the platform, ’s Lander, which became the commercial Zarch, and provided the template for his Virus and Virus 2000 games.
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We get a little of the history and a description of the OS, plus a look at an early model still in its box and one of the last of the Archimedes line. takes a look at some of the first Archimedes machines in the video below the break. But the possibility that their unique and innovative processor would go on to spawn a line of successors that would eventually power so much of the world three decades later was something that probably never occurred to spotty ’80s teens. If you were a British school pupil in 1987 who found a pair of the new machines alongside the row of BBC Micros in the school computer lab, for sure it was an exciting event, after all these were the machines everyone was talking about. Take the Acorn Archimedes, the home computer for which the first ARM processor was developed, and which has just turned 30. The trouble with being an incidental witness to the start of something that later becomes world-changing is that at the time you are rarely aware of what you are seeing.