On May 22, 2016 1:22 PM, "Mark Darvill" <mark.darv...@mac.com> wrote: > > The core memory/CPU backplane is a special case and doesn’t need grant cards. > > If you have linked up to the expansion Unibus then you need to check you have the NPG jumper in row C, Pins A1 and B1 in each slot. If these do not have wire wrap then you will either need to wire wrap them or insert a G727 into the backplane slot. Without these the units will hang on attempting to use a card that requires DMA access. > > Hope this helps. > > Mark >
Thanks Mark..yes I have one slot that needs the npg, it's in place. I have not had a chance to test with grant cards removed hope that does the trick
