sas@duke.UUCP (Steve A. Shumway) (09/12/84)
We have a VAX 750 running 4.2 with two UBAs and a (hopefully familiar to someone) problem. Whenever I try to access the uda50 on the second unibus I get "uba?: stray intr ipl 15 vec 524" and the system crashes. Both uba1 and uda0 are correctly identified at autoconfigure time, and configuring uda0 to reside on uba1 rather than uba? has no effect. The same kernel configured with uda0 on uba? runs fine when I recable the second BA11 to run as an extension of the first unibus, which to me indicates no address conflicts. I am aware that under 4.1, there was a bug with the second unibus vector map being dynamically allocated outside of low core. I have the old news article with that bug fix for 4.1 and apparently an attempt was made (did it succeed?) to fix that bug under 4.2. Is the bug I am seeing a problem with that fix, or with something completely different? I would greatly appreciate fixes or pointers to fixes, as this 750 has in addition to an RA81, an RK07, a DMR11, a DEUNA, a TS11, and a Ramtek 9400 controller, and that all ain't gonna work on one bus! As usual, thanks in advance. Steve Shumway Duke Computer Sci. Dept. duke!sas
chris@umcp-cs.UUCP (Chris Torek) (09/17/84)
We have a 780 with two UBAs and two UDAs, one on each UBA, and that
works. (No I don't know why they bought two UDA50s when we only have
two RA81s.)
--
In-Real-Life: Chris Torek, Univ of MD Comp Sci (301) 454-7690
UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris
CSNet: chris@umcp-cs ARPA: chris@marylandrad@MITRE-BEDFORD.ARPA (09/23/84)
>>We have a 780 with two UBAs and two UDAs, one on each UBA, and that >>works. (No I don't know why they bought two UDA50s when we only have >>two RA81s.) Hmmm. Must have been configured by one of them there DEC "expert" systems... |:-<) Dick Dramstad rad@mitre-bedford