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Acorn Archimedes - Description; Early models

Acorn Archimedes - Description; Early models: Encyclopedia II - Acorn Archimedes - Description; Early models

The first models were released in June 1987, as the 300 and 400 series. The machines differed primarily in that the 400 series included more expansion slots (four instead of two) and a ST506 controller for an internal hard drive. Both models included the Arthur OS (later versions to be called RISC OS, see below), BBC BASIC and an emulator for Acorn's earlier BBC Micro, and were mounted in two-part cases with a small central unit, monitor on top, and a separate keyboard and three-button mouse. All models featured onboard 8 ch ...

See also:

Acorn Archimedes, Acorn Archimedes - Description; Early models, Acorn Archimedes - The A3000 and A5000, Acorn Archimedes - A new range and a laptop, Acorn Archimedes - Significance and impact

Acorn Archimedes, Acorn Archimedes - A new range and a laptop, Acorn Archimedes - Description; Early models, Acorn Archimedes - Significance and impact, Acorn Archimedes - The A3000 and A5000, BBC Micro predecessor, Risc PC The next generation Archimedes, Acorn Computers Ltd

Acorn Archimedes: Encyclopedia II - Acorn Archimedes - Description; Early models

Acorn Archimedes - Description; Early models

The first models were released in June 1987, as the 300 and 400 series. The machines differed primarily in that the 400 series included more expansion slots (four instead of two) and a ST506 controller for an internal hard drive. Both models included the Arthur OS (later versions to be called RISC OS, see below), BBC BASIC and an emulator for Acorn's earlier BBC Micro, and were mounted in two-part cases with a small central unit, monitor on top, and a separate keyboard and three-button mouse. All models featured onboard 8 channel stereo sound and were capable of 256 colour screenmodes.

Four models were initially released with different amounts of memory, the A305, A310, A410 and A440. The 300 and 400 were followed by a number of machines with minor changes and upgrades:

(A500 - 4 MB RAM, Archimedes development machine, never sold [1])
A305 - 512 KB RAM
A310 - 1 MB RAM
A410 - 1 MB RAM
A420 - 2 MB RAM, 20 MB hard disk
A440 - 4 MB RAM, 40 MB hard disk
(A4xx/1 editions with improved memory controller)
A540 - 4 MB RAM, 100 MB hard Disk
(A680 and M4 - 8 MB RAM, RISCiX development machines, never sold)
R140 - 4 MB RAM, 52 MB hard disk, RISCiX UNIX workstation
R260 - 8 MB RAM, 100 MB hard disk, RISCiX UNIX workstation
R225 - 4 MB RAM, RISCiX UNIX network computer

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Adapted from the Wikipedia article "Description; Early models", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki

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