There were several commercial co-processors for the Tube, including ones with a 6502, a Z80 allowing CP/M to be run, and an 80186. As with most of the 8-bit generation of home computers the BBC ...

There are 6809 enthusiasts, 6502 diehards, and Z80 lovers, each sharing a bond to their particular platform that often threads back through time to whatever was the first microcomputer they worked ...