The Acorn Archimedes range of computers has an atypical hardware implementation of its RS232/RS423 serial port. In order to use a serial mouse with the port to replace the harder to find Acorn Quadrature mice, a special adapter may need to be used.
Some serial mice will work without the adapter but I've found that of all my serial mice, only one works with the Archimedes and it requires this adapter too.
Parts for assembly
The adapter is straightforward to build and requires a small amount of soldering to get the job done. The parts re