Firstly, i made a 1:1 copy for the original switchboard. It's perfectly working and can get installed with the same instructions as the original board:
|PS-IO Switchboard 1:1 clone|
As i also wanted to install a Modchip inside my PS1, i made a second version of the switchboard, which also includes a MM3 Modchip on the board.
|PS-IO switchboard with ModChip (installed on a PU-22 board)|
This is a clean solution if you need a modchip inside your PS1 and a switchboard. It will save you 2 wires to solder and it's easy to install.
|Old solution, installing the PS-IO switchboard and MM3-Modchip seperately (on a PU-17 board)|
I have some of those boards left.
The 1:1 Clone will cost 8EUR
The Switchboard+Modchip will cost 11EUR
Just use the contact form below if you need one.