8870 Adventures

© Joe Farr, 2011 – 2024

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  • NIROS 5.1/01

    The NIROS manuals contain details of all operating system updates since the previous manual; including updates to BASIC, and details of new or updated hardware. Once something has been described it will not usually be covered again in subsequent manuals unless a relevant change has been made, so to get a complete picture of the…

  • 8870 CPU Technical Notes

    I was contacted some time about by Les Chamberlain who provided a lot of good, in-depth technical information about the CPU internals.

  • 8870 Model 1 & 3 Brochure

    Some sales blurb brochure I came across.

  • Micro 7 Operation Manual

    The Micro 7 was a small desk-top machine that could support two terminals. It has a custom CPU plate that contained the CPU, memory and 2 channel ALME. The second channel was often used to connect to an internal or external modem but it could be used to support a second terminal if required. There…

  • Micro 7 Installation Manual

    The Micro 7 was a small desk-top machine that could support two terminals. It has a custom CPU plate that contained the CPU, memory and 2 channel ALME. The second channel was often used to connect to an internal or external modem but it could be used to support a second terminal if required. There…

  • Model 1 Technical Manual

    This looks like the first release of the what we used to call in the UK, “The field engineering service manual”. Even though it refers to the earliest 8870 machines it still contains a wealth of information including details of the CPU instruction set that stayed basically the same for all 16-bit CPUs until the…