Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  <20022003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  Index 1994  1995  1996  1997  1998  1999  2000  2001  <20022003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017 
<== Date ==> <== Thread ==>

Subject: Re: ISEG VHQ204L Driver
From: "Burkhard W. Kolb" <b.kolb@gsi.de>
To: tech-talk@aps.anl.gov
Date: Thu, 25 Jul 2002 08:21:54 +0200
Hi,

we use on PPCs __asm__ volatile ("eieio"), which is the correct
assembler instruction to make sure that the write has finished before
the next read on VMEbus is executed.
The same by the way is true for 68k archticture where the instruction
would be "nop".
On Intel cpus I don't know how to solve this, maybe a few useless
instructions will do.

Burkhard



Replies:
Re: ISEG VHQ204L Driver (Really: PPC and VME) Kay-Uwe Kasemir
References:
Re: ISEG VHQ204L Driver J. Frederick Bartlett (bartlett@fnal.gov)

Navigate by Date:
Prev: seq-1.9.6-beta redux Laznovsky, Michael
Next: Re: sel record for strings Vladis Korobov
Index: 1994  1995  1996  1997  1998  1999  2000  2001  <20022003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017 
Navigate by Thread:
Prev: Re: ISEG VHQ204L Driver J. Frederick Bartlett (bartlett@fnal.gov)
Next: Re: ISEG VHQ204L Driver (Really: PPC and VME) Kay-Uwe Kasemir
Index: 1994  1995  1996  1997  1998  1999  2000  2001  <20022003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017 
ANJ, 10 Aug 2010 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·