I had some extra time on my hands (and an extra MM-21 Board) so I bought some memory chips and began soldering them to my memory board (not fun) Now that I have the board populated which would give it 1MB of memory I can't get info on where the jumpers on the board should be. I know the machine parameter setting. Yasnac doesn't sell these boards anymore so I can't buy one and get the info then pay a restock fee. Can anyone help?