Intellec MDS questions

[Tony Duell]

> 
>    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