The two presentations look to be consistent to me, right down to the keyways.
The bitsavers/hack42 view is oriented is as if you held a board vertically with the connectors edge pointing towards you and the components on your right, the two faces are then folded out towards you. The connectors go up A to D. This view would also be a view from the bottom of the backplane. The 8e/Docs 2-page extract is 180 degrees rotated from this. So the connectors now go down A to D. On 2017-Jan-22, at 3:15 PM, W2HX wrote: > Before deleting this, someone much smarter than me should double check to > make sure I am right that the file is incorrect. It is a shame because it is > very nicely done. It even shows the keyways in the card. But it seems to be > backward to me. > > I tried to find contact information for that hack42.nl site to suggest they > redo the otherwise useful file, but was not successful. > Thank you > Eugene > > > -----Original Message----- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Al Kossow > Sent: Sunday, January 22, 2017 5:59 PM > To: cctalk@classiccmp.org > Subject: Re: quick omnibus question > > > > On 1/22/17 2:05 PM, W2HX wrote: > >> I hope this email can be found by the next guy searching for the omnibus >> details so they can avoid wasting time. >> THIS FILE IS WRONG >> http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp8/pdp8e/Omnibu >> s_legenda.pdf >> >> This file shows the Omnibus signal locations CORRECTLY (extracted from >> a larger document) >> http://w2hx.com/x/VintageComp/PDP-8e/Docs/Omnibus_Card_Edge_Designatio >> ns.pdf >> >> >> >> > > > i will delete the file > here is the original source > http://www.classiccmp.org/pipermail/cctalk/2015-June/007475.html >
