Acorn Universal Second Processor Unit

 Home > Browse Our Collection > Computers > Acorn Computers > Acorn BBC Micro Peripherals > Acorn Universal Second Processor Unit
 

The Universal Second Processor Unit is a second processor unit that allows any BBC Master internal co-processor boards to be installed, thereby allowing the BBC B and B+ to use them as external co-processors. It contained a power supply, interface logic and a connector that matched the internal co-processor connector built into the BBC Master main board. The possible co-processor boards were:

  • The Turbo board: a 4MHz 65C102 with 64KB RAM.
  • The Master 512 board: a 10MHz 80186 with 512KB RAM.
The universal second processor unit could also be attached to the BBC Master in addition to an internal co-processor. In this case only one of the second processors would be enabled, switchable through software.

Our unit has been fitted with the Master 512 co-processor board. It has a serial number of 03-ANC21-1000861.

Date : 1987

Manufacturer : Acorn Computers

Physical Description : Co-Processor Unit

This exhibit has a reference ID of CH34150. Please quote this reference ID in any communication with the Centre for Computing History.
 

Scan of Document: Acorn Universal Second Processor Unit

Click on the Image For Detail






Help support the museum by buying from the museum shop

View all items

Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund
Accredited Museum