Experimental Physics and
Industrial Control System

[email protected] (Tim Mooney) · Fri, 15 Aug 1997 11:02:50 -0500

Dear Stumbling,

> > >I think the problems with vxV52p2.Tar.gz file is fixed now. Please
> > >download it if you are thinking about moving to EPICS Release R3.13.7
> > >and above.
> 
> I certainly hope you meant EPICS Release R3.13.0BETA7.  If not, my two
> 					       ^^^^^
> weeks of vacation must have been a whole lot longer than two weeks for
> the rest of universe, given the rate at which real (non-BETA) releases
> of EPICS happen.

Hey, you snooze, you lose.

> > >	       Please note that this is NOT a replcement of your full
> > >VxWorks distribution package.
>  
> > Admittedly, I am confused as ever.
> 
> Me too.  It's not clear to me what "vxV52p2.Tar.gz" fixes.  We "own" our own
> license from WRS, so it sounds like we need to apply this patch, if we can
> get it.  (Somebody else on our site knows the password.)  Can someone give
> me a clue as to what the patch fixes and what will break without the patch?
> 
> -bill (Organizationally Challenged, but stumbling on!)

The most recent fix adjusts the highest local memory address that gets
mapped to VME (for MVME162 processors only) and allows an MVME162 to
run EPICS and Hideos IndustryPack support.  (I.e., it allows you to
put IP modules on the main processor instead of, or in addition to,
IP modules on a separate MVME62 running only hideos.)

Earlier patches fixed the way cacheing was done so that two processors
could use semaphores across the VME backplane (the semaphore can't do
any good if it's cached in local memory), and allow a single vxWorks
image to handle boards with differing amounts of memory.

By the way, I don't actually know anything about this stuff.  I'm just
repeating what I've heard John Winans, Jim Kowalkowski, and Joe Sullivan
talking about.

Tim Mooney

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System