EPICS Re: ISEG VHQ204L Driver

Experimental Physics and Industrial Control System

1994 1995 1996 1997 1998 1999 2000 2001 <2002> 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024	Index	1994 1995 1996 1997 1998 1999 2000 2001 <2002> 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
<== Date ==>		<== Thread ==>

Subject:	Re: ISEG VHQ204L Driver
From:	"Burkhard W. Kolb" <[email protected]>
To:	[email protected]
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 ([email protected])

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 <2002> 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Navigate by Thread:: Prev: Re: ISEG VHQ204L Driver J. Frederick Bartlett ([email protected]); Next: Re: ISEG VHQ204L Driver (Really: PPC and VME) Kay-Uwe Kasemir; Index: 1994 1995 1996 1997 1998 1999 2000 2001 <2002> 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024