In <[EMAIL PROTECTED]>, on 11/13/2005
   at 11:31 PM, Wang Rong <[EMAIL PROTECTED]> said:

>    Are there any way to perform file I/O in Assembler program
>    without define a DD card in the calling JCL.

Yes. I'll only address those ways available to an unauthorized
program.

 1. Use DYNALLOC. Even though Dynamic Allocation is documented in an
    "authorized services" manual, it is available to unauthorized
    programs.

 2. Use Unix Systewm Services. Note that there may be an allocation
    under the covers.

>Can OPEN macro do that?

Not in general.

>    By the way, I can't find the description of some macro such as
>OPEN, GET, DCB in the IBM read books, Can some tell me where to find
>them?

Look in the DFSMS bookshelf; the relevant documentation should have
"data sets" in the title.
 
-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     ISO position; see <http://patriot.net/~shmuel/resume/brief.html> 
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

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