2016-05-23 1:07 GMT+02:00 william degnan <billdeg...@gmail.com>: > Paul, > What terminator card exactly? As I had written originally, the system was > functional before I added the core planes. I was thinking that I needed a > terminator now that I have more than just the cpu plus four slot plane, but > I did not have the space for it along with all of the cards I already have > installed. > > > http://vintagecomputer.net/digital/pdp11-40/card-layout_moved-plane_Pic2.JPG > (I removed the grant cards from the core planes per Tony's suggestion.)
You don't have a terminator in the last slot of the bus. There should be a M930/M9301/M9312 installed there, not a RL11. It is possible to put the M9312 / M9301 there if you install the five jumpers (In my 11/10 there is a M9301-YF installed in a regular Unibus slot). With jumpers in the M9301/M9312 will terminate the BGx and NPG signals as well. Without jumpers these signals will be unterminated which is not good. Be careful to not put it into a MUD slot with the jumpers in, though. It is not clear to me if the DL11-W repsonds correctly when you try to address it or just doesn't output anything. Check grant continuity from last slot to the M981. But just to output a character on the console BG/NPG continuity wouldn't matter. Booting from the RL11 will not work unless the NPG chain (and BG chains are OK). I actually think that the reason for the RL11 not working is that the grant signals don't have a pull up anywhere in your config. /Mattis > > -- > @ BillDeg: > Web: vintagecomputer.net > Twitter: @billdeg <https://twitter.com/billdeg> > Youtube: @billdeg <https://www.youtube.com/user/billdeg> > Unauthorized Bio <http://www.vintagecomputer.net/readme.cfm> >