BBC Micro

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The BBC Micro is a family of microcomputers developed and manufactured by Acorn Computers in the early 1980s as part of the British Broadcasting Corporation's Computer Literacy Project. The first model was launched in December 1981. The computers were a common sight in British schools in the 1980s and early 1990s.

Models

There were several models released during the machines lifespan, including the expanded BBC Master. Models were made for the US export market although those are much rarer and generally not compatible with most software, which was written for the PAL machines.

Video output options

All models offer composite and RGB output, making them easy to use with modern scalers.

Note that the BBC Micro uses a mixture of 15khz interlace and progressive video modes. Games typically use progressive modes while productivity software often supports both.

Models tested

BBC Master 128 (PAL)

XRGB-3 Specific settings

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XRGB-Mini Specific settings

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OSSC Specific settings

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OSSC Pro Specific settings

No special settings appear to be required. For interlace modes you should use the OSSC Pros scaler mode for best results.

Morph_4K Specific settings

Overscan issue - With the default timings the Morph may slightly overscan the BBCs image in both interlace and progressive modes.

To correct this, navigate to input->(whichever input your machine is connected to) and then adjust as follows:-

  • DE top - Around 42 for interlace modes, 30 for progressive
  • DE height - Around 481 for interlace modes, 259 for progressive

Using a screen full of text (e.g a program listing or disc directory) adjust until you can clearly see all of the top line and the blinking cursor at the very bottom of the screen. Once you have done adjusting your settings can be saved to a profile to be recalled any time you use your BBC computer.

External Links