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Acorn System 234
Acorn's next systems were all rack-mounted Eurocard systems. They added various combinations of video, memory and floppy disk interfaces to the standard CPU, which was still a 1MHz 6502, but with a larger ROM containing more firmware. Called Acorn Systems 2 through 5, prices varied from £320 to around £2,000. The System 2 was released in 1980, and the System 5 in 1983.
The most interesting was Acorn System 3, which formed the basis for the Acorn Atom, the company's first mass-market computer. The System 3 was also the basic development system within Acorn and hosted most of the hardware and software work on the BBC Micro.
Photo credit: Rupert Goodwins
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