Osborne 1 keyboard pinout

[number-one]

Hello I would like to contact David Knoll contributor of this page
He wrote:

I'm intending to build a PS/2 keyboard adapter using an ATtiny and a bunch of 74LS374's, as my keyboard was busted when I got it (eBay bargain).

I have a non working Osborne 1 keyboard so he could help me.