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Conference vaxaxp::alphanotes

Title:Alpha Support Conference
Notice:This is a new Alphanotes, please read note 2.2
Moderator:VAXAXP::BERNARDO
Created:Thu Jan 02 1997
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:128
Total number of notes:617

102.0. "ovms V6.x vs V7.x compatibility" by HYDRA::LNARAYAN () Thu May 08 1997 17:40

    Hello
    
    Are there any known compatibilty issues with ovms Alpha 6.x and 7.x.
    A partner is having problem in running his application that was
    compiled on 6.1 when running it on V7.1 or V7.0 I dont have the exact
    error messages, But I can get the details.
    
    Thanks In Advance
    Lakshminarayan
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102.1We Need Those Details, Otherwise We're Guessing...XDELTA::HOFFMANSteve, OpenVMS EngineeringThu May 08 1997 18:3627
:    Are there any known compatibilty issues with ovms Alpha 6.x and 7.x.

   Open-ended questions are very hard to answer.

: ...But I can get the details.
   
   We need the details, please.  We need to confirm the original V6.1
   OpenVMS Alpha version, the final OpenVMS Alpha V7.x version, a general
   application description (including any use of execlets, drivers, loadable
   images, or privileged system services), any error message(s) displayed,
   any system or library routine(s) used, the OpenVMS system or VMScluster
   configuration, etc.

   There are some big differences in the memory management and the kernel
   with the advent of 64-bit addressing (these should not be visible to
   user-mode (non-privileged-mode) code, but will be visible to inner-mode
   (privileged-mode) code.)  And things like the SCSI bus interface changed
   at V6.2.  And MOUNT and shadowing certainly changed in V7.1.

   Please confirm that the customer reviewed the new features and release
   notes for the intervening and final releases?

	--

   ps: this is the generic Alpha, and porting-to-Alpha conference.  The
   VAXAXP::VMSNOTES conference is a better spot for OpenVMS questions.

102.2Yes, they snuggle up close to the O.S.HYDRA::NEWMANChuck Newman, 508/467-5499 (DTN 297), MRO1-3/F26Fri May 09 1997 13:007
This is for Ingres.  I ported their VAX device driver to an Alpha
execlet/user-written system service.  They have their own threading
and scheduling routines.

I'll carry this to the OpenVMS notes file once I get specifics.

							-- Chuck Newman
102.3Upgrading Privileged-Code Applications bookEVMS::NOELMon May 12 1997 13:589
I would check out: 

"OpenVMS Alpha Guide to Upgrading Privileged-Code Applications"

This manual is part of the V7.0 doc set. We documented every symbol change
visible to privileged applications. Plus we documented kernel threads
internals in Chapter 6.

- Karen