> > >> Interesting. I suppose the LTC on the M7856 could also be disabled... > I'll have to try that and see if it works. The DL11-W manual doesn't seem > to cover any special installation procedures for the 11/40, and the 11/40 > System Manual describes Slot 9 as a "SMALL PERIPHERAL CONTROLLER (USUALLY > DL11)" slot without mentioning the lack of NPG and the LTC oddity. Weird. > > I now have the CPU passing diagnostics with flying colors (there was a > problem with the IR Decode logic causing incorrect reserved instruction > traps), and I can boot RT-11 from the SCSI controller, yay. Now to track > down the EIS and Stack Limit options... > > - Josh >
Josh, Glad to hear. Also this thread may have given me the clues I need to boot an RL02 / 11/40 / RT-11. 1) I never thought to check to see if my system was used with a KW11-L in the past, I too appear to have a CPU set that came from a different system. I need to check for a missing jumper in slot 3 of the CPU backplane. F03R2 and F03V2. 2) I actually do have a KW11-L (M787), but whenever I attempt to use it I can't do much other than toggle memory using the front panel. Simple CPU programs fail, and I can't boot using M9312. (I actually tried 2 of these cards, same result) I thus assumed I did not have a CPU backplane wired for a KW11-L, but it could be that it actually *is* and the problem is with the M787 card, a fault in the card. I have 0 experience with altering or testing backplane jumpers, but I will try. I have always used an extender card instead and probed signals form the extension card as a cheat. It seems like the NPG is OK AFAICT, but I did not check slot 9. It does not seem to matter whether I have a grant card in slot 9 or not either. 3) I would not mind getting something like Guy's UA11 to test with. Are these available? 4) I have been also working on getting a M7856 wired to 177560 so I can emulate a TU58. Made progress last night, will keep working on getting XXDP running. Up to this point I had been loading in one routine at a time using PDPGUI. Some success, used to learn my system was expecting a KJ11 (M737), which fortunately I had. Since then I verified that my CPU cards are correctly jumpered for what I have installed in the backplane. Per this conversation I believe I have the correct cards and enough working RAM to operate RT-11. Noel - Do you ever make a trip up my way? If you ever have time to stop by to help me with my system I'll trade you some hardware or food for your trouble... Thanks Bill