26 Sep
2005
26 Sep
'05
4:56 p.m.
On Sep 26 2005, 17:29, Gooijen, Henk wrote:
> >BTW, I assume that you made a typo in the
serpentine:
> >> option2|option1
> >> option3|option4
> >> option5|option6
> >That last line should be option6|option5, or ......?
> >
> As shown it is correct. 2,3,5 on the left: 1,4,6 on the right.
> it's one of the odder -11 backplanes.
> My source was the Microcomputer handbook
1976/77.
> I also have one with core in it.
thanks again! Indeed odd, as that is not the
"serpentine rule" !
I am sure that I would have made that mistake ...
No, that's not right. It's ordinary serpentine. I don't have one, but
I just checked the Microcomputer Handbook myself, and it's definitely
like this:
A B C D
processor
option 2 option 1
option 3 option 4
option 6 option 5
It's on page 6-3, and the expansion options, with the cable coming from
where I've shown "option 6", are shown on 6-19. It's also shown in the
same arrangement on page 426 of the Microcomputer Interfaces Handbook.
--
Pete Peter Turnbull
Network Manager
University of York