Experimental Physics and
Industrial Control System

"Joseph P. Sullivan" <[email protected]> · Fri, 22 May 1998 14:55:32 -0500

A distribution of the Hideos source files that contain the fixes Mark
mentioned are available from the Hideos distribution web page. Look for
it under the "HiDEOS Source" section on
www.aps.anl.gov/asd/controls/hideos. 

These fixes are only compatible with the Hideos version distributed from
May 97. 

Even with these fixes we have still been able to crash Hideos under very
heavy simulated traffic. This is one of the reasons Marty Kraimer took
up the effort to port the Hideos drivers to VxWorks. 

Mark Rivers wrote:
>
> Joe Sullivan found that the problem was that OMS interrupts which were
> supposed to be masked off were occasionally getting "unmasked" and occuring
> anyways.  My recollection is that his solution was to "remask" these
> interrupts in the interrupt service routine each time it was called.  This has
> completely fixed the problem.  It is not clear if this is an OMS hardware
> problem, a Hideos software problem, or software problem in the OMS driver.
> There have been a number of bugs found and fixed in Hideos recently, so the
> "kluge" fix to the OMS driver may no longer be necessary.
> 

Joe Sullivan

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System