Hi Paul
I see that you are clearing out QBUS board. I've been looking for a
"DIGITAL Q BUS music board" for a while. It is a board without M-number
as it was never sold. It is a simple dual board with two AY-3-8192 chips
on. There are pictures available, if you want I can send them to you.
I live in Sweden, I hope we can work out shipping if you have the board.
Regards,
Pontus.