Next, the keyboard. The PET has an 8x10 keyboard matrix, and the chosen motherboard had the old 5 pin DIN keyboard connector (AT style). I adapted an old PC keyboard to drive this matrix, with an adapter board to interface between the 20 pin Pet keyboard and the PC Keyboard controller board. It was a partial success, as the matrix was different, so I needed to remap them in software at the PC side. Some weren't mapped by the controller at the keyboard end, so weren't sent through, but most of the keys worked.
next week's thrilling instalment of The Pet Project!
Update: This Pet has now been fully restored