Difference between revisions of "Template:Mainframe I/O access methods"

From blackwiki
Jump to navigation Jump to search
imported>Peterh5322
imported>Peterh5322
Line 22: Line 22:
  
 
== Including EXCP ==
 
== Including EXCP ==
While the ''Execute Channel Program'' ([[Unit Control Block|EXCP]]) macro, is included in this list, EXCP works with OPEN to allow callers to issue hardware specific channel commands to datasets on DASD/TAPE, technically it is a dataset abstraction interface for higher level access methods.
+
While the ''Execute Channel Program'' ([[EXCP]]) macro, is included in this list, EXCP works with OPEN to allow callers to issue hardware specific channel commands to datasets on any device, storage or network, technically it is a dataset abstraction interface for higher level access methods. One variation of EXCP is [[Execute Direct Access Program|XDAP]], which is for storage, only, and is provided for reading and updating direct access storage records. XDAP cannot be used to add records to a dataset, but XDAP can be utilized with BSAM to effect record additions to such datasets.
  
 
== See also ==
 
== See also ==

Revision as of 10:23, 6 May 2011

Usage

This template is to be used at the top of an article source code: To appear on the right top.

All the previous article like texts

cleanup: This is not an article! All the article-like stuff is to be moved, i.e. to the Access method article: All the intro paragraphs as well as all the latter chapters.

The OS/360 I/O access methods are programming APIs on the OS/360 mainframe computer operating system, used by programmers to implement input/output operations on data sets (files). They are by convention referenced to with ...AM acronyms, standing for ... Access Method. They are now mainly used in OS/360's successor z/OS.

Including EXCP

While the Execute Channel Program (EXCP) macro, is included in this list, EXCP works with OPEN to allow callers to issue hardware specific channel commands to datasets on any device, storage or network, technically it is a dataset abstraction interface for higher level access methods. One variation of EXCP is XDAP, which is for storage, only, and is provided for reading and updating direct access storage records. XDAP cannot be used to add records to a dataset, but XDAP can be utilized with BSAM to effect record additions to such datasets.

See also

External references

  1. History of IBM mainframes
  2. IBM Redbook for system programmers




See also