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This is the recovered Machine Room from 2005. Please don't expect wonders. The look and feel of this site is nine years old, and so is its code. Some of the functionality has been recovered while the rest of the site is modernised and restructured. Watch this space!
Top :: Browse :: Acorn :: BBC Model B Plus

AcornBBC Model B Plus

Entry quality: 1 | Rate this entry: Unrated (0 votes). | 7371 hits | Admin: alexios
No known owners (I still own one | I used to own one). I have seen one.
Search Google or Ebay United States for Acorn BBC Model B Plus (more links, auctions & searches)
Other series members
Atom, BBC Model A, BBC Model B, Electron, BBC Model B Plus, BBC Master 128, BBC Master Compact, BBC Master Turbo, BBC Master 512, BBC Master EC.
Quick View
Emphasis Education, Home computing, Programming, Small business
Hardware compatibility BBC
Standards Teletext
Timeline Released: 1985
CPU type 6502A
CPU word length 8 bits
CPU clock rate 2 MHz
ROM Size 32 KiB
RAM Size 64 KiB, 128 KiB
Keyboard Typewriter keyboard
Graphics chip 6845
Graphics modes 160x256x4, 160x256x8, 320x256x2, 320x256x4, 640x256x2
Text modes 20x32, 20x32x8, 40x25x2, 40x25x8, 40x32, 40x32x4, 80x25x2, 80x32x2
Total number of colours 8, 16
Sound chip SN76489
Sound channels 3
White noise channels 1
Sound output Mono
Cassette tape speed 300 bps, 1,200 bps
I/O Ports Analogue Joystick/Mouse, BBC High Speed Bus, Composite video, Econet, Floppy, Parallel, RGB, RS-423, TV output, Tape recorder, Tube expansion, User port

More technical info...

Acknowledgements

Thanks go to the following people for contributing information to this entry.

References
Full Acorn Machine List.
A Technical History of Acorn Computers (Version 0.5 Beta).