kim@emory.UUCP (Kim Wallen {Psychology}) (09/28/84)
I am trying to bring up generic 2.9bsd on an 11/23 with 224k memory. The system signals 40boot. When I boot it from the rl boot I get the banner and then mem = 111296 followed by no clock?? Immediately after this the system prints the following: ka6 = 3465 aps = 124376 pc = 6142 ps = 351 __ovno = 2 trap type 11 panic: trap and dies. It seems clear that something is going wrong in memory and happens in overlay # 2, but I am stymied about where I should go looking. DEC service has checked all of our components out and find no evidence of hardware problems. Can this problem come about as a result of the order that boards are installed in the backplane. We have two of the memory boards after a dlv11-J board. Any hints ore help would be greatly appreciated. Kim Wallen Psychology Dept. Emory University Atlanta, Ga 30322 (404) 329-4125 akgua!emory!kim or akgua!emory!emoryu1!psykw
hoffman@pittvax.UUCP (10/02/84)
When 2.9bsd prints out "No Clock", it means that it didn't see a KW11L-style CSR at address 177546. 11/23s normally don't have these anyway. Beg, borrow, or steal a KPV11 or BDV11 board and stick it in. These boards (among others) provide the necessary hardware register. Make sure, too, that you have your LTC switch off when using one of these boards, otherwise you'll have a line clock running at 120 Hz. Your trap at pc=6142, overlay 2 is in the middle of the 'csv' routine. This might be some strange behaviour caused by the lack of a clock. -- Bob Hoffman Pitt Computer Science