Discussion about the Korg PolySix synthesizer

Hi all!

I recently got my hands on a Polysix, my 2nd. I got it for 1000 swedish crowns
(aprox 165 US dollars). 

It's 110v american PSU and when I opened it I discovered the midikit as offered
by Korg in the 80ies. Chipversion reads "v2.6". It both sends and recieves MIDI
and looks like this (pictures 1,5Mb):

http://www.acc.umu.se/~amber/Poly6/stuff/IMG_5729.JPG
http://www.acc.umu.se/~amber/Poly6/stuff/IMG_5730.JPG

Does anyone have any information on this kit? MIDI-specifictaions? Users
Manual?
I would be very happy to get some more knowledge on this particular kit.

Thanks,
Kristofer Ulfves, Uppsala, Sweden