the Acorn BBC Micro Model B was a landmark home computer, developed as part of the BBC’s Computer Literacy Project. It became synonymous with education throughout the 1980s and 1990s, thanks to its wide adoption in schools across the UK. The Model B, the more advanced of the BBC Micro range, featured better memory and expandability compared to the Model A, making it ideal for programming, gaming, and educational software.
Hardware Specifications
Processor: 8-bit MOS Technology 6502A running at 2 MHz
Graphics: Text display up to 80 characters wide; graphics up to 640×256 pixels with 8 colors
Memory: 32 KB of RAM
Storage: Cassette tape interface, optional floppy disk drive via expansion
Audio: 4-channel sound with built-in speaker
Operating System: Acorn MOS (Machine Operating System) with BBC BASIC programming language
Connectivity: User port, printer port, RS423 serial interface, and expansion slots for peripherals, and Econet networking support for school
Original Release Date: 1st December 1981
Discontinued: 1994
Cost (New in 1981): £399
Cost (In 2024 Price): £1450
Modifications I have performed:
Modified the Monochrome composite display connector to allow colour output.
Removed original Power Supply and replaced with modern version.
Have fitted the RetroClinic DataCentre (pictures in gallery)
Raspberry Pi Zero Co-Processor (not working as I don’t have a ROM with the TUBE code on it fitted in the system yet)
RetroClinic repaired my BBC when it stopped working, there was a broken trace on the motherboard on the CPU reset line.
Other Modifications: Factory Disc Filing System ROM Chip (DFS) has been replaced by Super LVL DOS 1.00 by Computer Village Ltd
Using RGB Monitor port to Scart cable for better colour picture quality than composite video.
Cost to me for computer £0.00
Cost to me for repairs and upgrades £220.34
