8 Apr
2005
8 Apr
'05
2:27 p.m.
Good info, Tony! I have a lot of it already but it's all crude paper
drawings, this is nicely organized so I'll save it in my permanent archives.
I extracted it from the comb-bound A3 schematic diagram set that came
with the double density controller. It wasn't totally trivial to do --
the signals are not named on the cable wirelists, only on the controller
PCB schematis (which use a different pin numbering scheme to the cable
connectors!) and the drive kludgeboard. I named all the signals so I
could make sure it all made sense.
Incidetnally, I'd be careful about the numbering of the pins on the Blue
Ribbon connector. Although the diagram shows it numbers as 1-25 on one
side and 26-50 on the other, I think it makes more sense if the odd
numbered pins are on one side, the even numbered pins on the other, like
a header socket. That way you'd get grounds between all the signal lines
on the ribbon cable and the cable would just be a straight-through IDC one.
Feel free to put this info on web sites, etc...
-tony