[Info-vax] yet another sys$qiow question

[George Cornelius]

In article <ACtSLwaH52o+ at eisner.encompasserve.org>, cornelius at eisner.decus.org (George Cornelius) writes:
> But $WAITFR has additional magic.  It is pretty much guaranteed
> to issue a memory barrier instruction, and that is the key to
> the original problem I was trying deal with: when is it safe to
> look in the buffer once you know the status word of the IOSB is
> nonzero?

And the answer is...

Well, I'm not completely sure, but see my recent post concerning a
possible resolution of issues raised in section 7.6.4.3 of the 3d.
edition AARM.

George