Timeline for What limited the use of the 6809 CPU in personal computers?
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 17, 2020 at 6:04 | comment | added | Kaz | One detail I think you've overlooked from the BBC's point of view is that they wanted a machine that could suit business' needs - i.e. run CP/M software. Acorn's Tube interface for second processors stemmed from internal argument on what CPU to use for their new "Proton", but suited the BBC's desire for an optional Z80 processor. It's notable that while they subsequently made second processors based on the 6502, Z80, 80186, 32016, and ARM, the 6809 never showed up; any internal advocates must have changed their mind or gone elsewhere. | |
| Feb 17, 2020 at 5:50 | comment | added | Kaz | The Acorn 6809 card you describe was an optional CPU card for their rack-based System range. It wasn't offered as standard on any of the System 1-4 range, which all shipped with the hand-drawn 6502 card (which, in fairness, was the very first product the company designed). See a contemporary catalogue www.vintagecomputer.net/fjkraan/comp/atom/doc/cu04-05.pdf . Acorn later released a CAD-designed 2MHz 6502A card for the System 5. | |
| Nov 23, 2018 at 10:55 | history | answered | jonathanjo | CC BY-SA 4.0 |