Re: VAXstation 3100/m76 stray interrupt

[Aaron Jackson <aaron%aaronsplace.co.uk@localhost>]

Thanks for the information, very useful. Slightly disappointing though
to hear though. I did originally wonder if it was a memory error. I
spent quite a bit of time a few months ago trying shuffling and removing
memory SIMMs. It's odd that OpenBSD and VMS do not do the same.

Since this is becoming a hardware problem, I may be asking in the wrong
place... Maybe someone here who knows about VAXstation hardware might be
able to help. I will also try comp.sys.dec.

Mouse and Greg, thanks for your help.

Aaron.


Mouse writes:

>> If anyone knows what "stray interrupt: vector 0x60, ipl 23" means it
>> would be very helpful.
>
> Well, I don't know any of the versions you've listed well.  But the
> message looks identical to past versions'; in those versions, it meant
> that the CPU found itself interrupted, at priority 23, on vector 0x60,
> but the OS was not expecting any such interrupt and thus had no idea
> what to do with it.
>
> Interrupt level 23, 0x17, is the highest of the hardware-interrupt
> levels.  I don't know the 3100 architecture well enough to know whether
> it can normally be generated by hardware or not.  The VARM says that
> SCB vectors 0x50-0x60 are "reserved for bus or memory error"; it seems
> at least moderately likely to me that this is a RAM error.
>
> 					Mouse