| Short name | Description | Year | Manufacturer | Runnable | Parent |
|---|---|---|---|---|---|
| bbc_tube_6502 | Acorn 6502 2nd Processor | No | |||
| bbc_tube_6502p | Acorn 6502 2nd Processor (pre-production) | No | |||
| bbc_tube_6502e | Acorn Extended 6502 2nd Processor | No | |||
| bbc_tube_65c102 | Acorn 65C102 Co-Processor | No |