I wish to talk about the JADE Big-Z. The board in the
photograph looks the same as the one I have, Rev C.
But it's not the same as the manual. U21 (2nd from top, 2nd
from right) is not a 8224, it's a 74LS04 on my board and looks
to be that on your picture too.
Ideas? The manual does not indicate a revision, does someone
else in the group have a Rev C manual they can scan?