News!
Wise and helpful words
Tested the adapter with the help of this
image (thks kdbabel) + multimeter > seems OK.
I was prepared to that answer about how to test the keyboard
I'm going to build the Soarer's converter to sort it out (it will serve, even if the keyboard is dead).
I'll give some news as soon I progress with this.
Message received about DIP switches (seems no standard exists, sadly).
I went back where I found the KB, but the guy wasn't able to give any more info on it.
Again, thank you very much for showing me the path.
Boobs
Hehe, yours seems younger than mine
You've got a nice fishy "A" although.
Anyway, I discovered an another Memorex 122 KB with APL today (Swidish or Finnish layout I think).
I'll post some photos.