BBC Model B

Click here to view the history of the BBC Model B.


I was given this BBC Model B in 2000, following a clear-out by my old sixth form college. This machine would have been used either in the Maths department, Science department or as part of the internal PANDORA network, and as a result of this the machine has an Econet interface fitted. It has an issue 4 motherboard, making it one of the earlier BBC Model B machines to be produced. Oh yes, and it has a Teletext ROM installed. (If anyone has one of the old Teletext adaptors and is thinking of selling it, please get in touch with me.) That's about all I know about it.

Name. BBC Model B, issue 4.
Introduced. 1981.
Processor. Mostek 6502A (1 MHz).
RAM. 32 Kb.
ROM. 32 Kb (containing operating system, BBC BASIC II).
Operating system. Acorn MOS 1.2.
Interfaces.
  • UHF out.
  • Video out.
  • RGB out.
  • Cassette.
  • RS423.
  • Analogue in.
  • Econet.
  • Disc drive.
  • Printer.
  • User port.
  • 1 MHz bus.
  • Tube.
  • 5V / 12V DC aux power socket.
Peripherals fitted. 5.25" disc drive.

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Robert McMordie

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