Acorn Arduino PS/2 mouse adapter
Acorn RISC OS requires a mouse and it is very limited in use without it. This post describes in detail how to create a PS/2 Arduino adapter that connects to the 9-pin Mini DIN mouse port.
I was very fortunate to get this vintage computer from my friend Eric. This Acorn Archimedes A3010 was produced in 1992 by Acorn Computers and was based upon an ARM250 RISC microprocessor. Right away I proceeded to connect the computer to see if it still was in a working condition.