On Monday, April 9, 2018 at 2:23 PM, Robert Armstrong wrote: > >Do you see a down side to the rounding up so the number of lines fits? > > For the DZ/DZV/DZQ case I think that will solve the problem.
That should be done now. Please confirm you're happy with the result. > However, I think the VH case is a little more complicated - > > * The UNIBUS DH11 and DHU11 had 16 lines per interface > * The QBUS DHV11 had 8 lines per interface > * The QBUS CXY08 was DHU/DHV compatible and had 8 lines > * The QBUS CXA16 " " " " " " " 16 lines Well, we don't specifically claim to emulate a CXA16. If you can find documentation which describes how Qbus PDP11 or VAX can distinguish between this controller and a CXY08, then we can add support and thus have to solve the problem of how many lines. Otherwise, the existing expression (Unibus ? 16 : 8) is sufficient in the current VH simulator. - Mark _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh