jgc (06/09/82)
Subject: 11/780 crash Has anyone had any experiences with the following hardware fault on an 11/780. We run 4.1bsd on an 11/780 with 2 meg, 2 RP06's, 2 Able DH/DM's, 2 DEC DZ11's. problem: cpu halts console spews : ?INT-STK INVALID HALTED AT 8000xxxx \ \ -------- random address Problems is independent of system load, occurs only with UNIX. DEC diagnostics find nothing. Page 40 of VAX hardware manual mentions error under "serious system failures." jim constantine philips labs
chris (06/10/82)
We just finished with a severe case of the INT-STK NOT VALID's. In our case it turned out to be a bad System Industries MBA backplane. The problem developed after 6 months of use and was supposedly due to a bad solder joint on a power pin. The CE had to swap the entire CPU to isolate the problem. Prehaps your problem is similar? Good luck. Chris Boylan University of Minnesota Computer Center decvax!pur-ee!minn-ua!chris