Small Assembler Program
Set Return Code to Zero & Return

Table of Contents

v-16.01.01 - asmr1401.htm

	Introduction
	The JCL Member
	The Mainline Assembler Program
	Summary
	Software Agreement and Disclaimer
	Downloads and Links
	Current Server or Internet Access
	Internet Access Required
	Glossary of Terms
	Comments or Feedback
	Company Overview

The SimoTime Home Page

Introduction

This program simply does a subtract of Register-15 from itself (i.e. setting the value to zero) and then does an unconditional branch to the address specified in Register-14. The assembler program is written in IBM Mainframe Assembler, it will compile using Assembler/H or HLASM. A JCL member is provided to run the job as an MVS batch job on an IBM mainframe or as a project with Micro Focus Mainframe Express (MFE) running on a Windows System.

This program may serve as a tutorial for programmers that are new to 370 Assembler and as a reference for experienced programmers.

We have made a significant effort to ensure the documents and software technologies are correct and accurate. We reserve the right to make changes without notice at any time. The function delivered in this version is based upon the enhancement requests from a specific group of users. The intent is to provide changes as the need arises and in a timeframe that is dependent upon the availability of resources.

The JCL Member

The following is the mainframe JCL (ASMR14J1.jcl) required to run the assembler program. The JOB statement will need to be modified for specific mainframe environments. This will also run on a Windows System using Mainframe Express provided by Micro Focus.

//ASMR14J1 JOB SIMOTIME,ACCOUNT,CLASS=1,MSGCLASS=O,NOTIFY=LRSP1
//* *******************************************************************
//*       ASMR14J1.JCL - a JCL Member for Batch Job Processing        *
//*       This JCL Member is provided by SimoTime Technologies        *
//*           (C) Copyright 1987-2016 All Rights Reserved             *
//*             Web Site URL:   http://www.simotime.com               *
//*                   e-mail:   helpdesk@simotime.com                 *
//* *******************************************************************
//*
//* Text   - 370 Assembler, Return to Caller with Zero Return Code
//* Author - SimoTime Technologies
//* Date   - January 01, 1997
//*
//* *******************************************************************
//* Step   1 of 1  This is a single step job.
//*
//ASMWTOS1 EXEC PGM=ASMR14A1
//STEPLIB  DD  DSN=SIMOTIME.DEMO.LOADLIB1,DISP=SHR
//*

The Mainline Assembler Program

This program (ASMR14A1.mlc) abides by the mainframe calling protocol and register usage guidelines. Register-15 is used to pass a return-code and register-14 contains the return address for the calling program. This program simply does a subtract of Register-15 from itself (i.e. setting the value to zero) and then does an unconditional branch to the address specified in Register-14.

***********************************************************************
*             ASMR14A1.MLC - This is an HLASM Program                 *
*                 Provided by SimoTime Technologies                   *
*           (C) Copyright 1987-2016 All Rights Reserved               *
*             Web Site URL:   http://www.simotime.com                 *
*                   e-mail:   helpdesk@simotime.com                   *
***********************************************************************
*                                                                     *
* Created: 1974/06/01, Simmons                                        *
* Changed: 1974/06/01, Simmons, no changes to date...                 *
*                                                                     *
***********************************************************************
*
* Set the Return code to ZERO and Return to Caller.
*
ASMR14A1 CSECT
         SR    15,15                 * Set Return Code to Zero
         BR    14                    * Return to Caller
         END

Note: The program performs the same function as IEFBR14.

Summary

This is a simple program that sets the return code to zero and returns to the calling program. This document may be used to assist as a tutorial for new assembler programmers or as a quick reference for experienced programmers. The samples focus on the coding techniques of the individual instructions. As always, it is the programmer's responsibility to thoroughly test all programs.

Permission to use, copy, modify and distribute this software, documentation or training material for any purpose requires a fee to be paid to SimoTime Enterprises. Once the fee is received by SimoTime the latest version of the software, documentation or training material will be delivered and a license will be granted for use within an enterprise, provided the SimoTime copyright notice appear on all copies of the software. The SimoTime name or Logo may not be used in any advertising or publicity pertaining to the use of the software without the written permission of SimoTime Enterprises.

SimoTime Enterprises makes no warranty or representations about the suitability of the software, documentation or learning material for any purpose. It is provided "AS IS" without any expressed or implied warranty, including the implied warranties of merchantability, fitness for a particular purpose and non-infringement. SimoTime Enterprises shall not be liable for any direct, indirect, special or consequential damages resulting from the loss of use, data or projects, whether in an action of contract or tort, arising out of or in connection with the use or performance of this software, documentation or training material.

Software Agreement and Disclaimer

Downloads and Links

This section includes links to documents with additional information that are beyond the scope and purpose of this document. The first group of documents may be available from a local system or via an internet connection, the second group of documents will require an internet connection.

Note: A SimoTime License is required for the items to be made available on a local system or server.

Current Server or Internet Access

The following links may be to the current server or to the Internet.

Explore the Assembler Connection for more examples of mainframe Assembler programming techniques and sample code.

Explore The ASCII and EBCDIC Translation Tables. These tables are provided for individuals that need to better understand the bit structures and differences of the encoding formats.

Explore The File Status Return Codes to interpret the results of accessing VSAM data sets and/or QSAM files.

Internet Access Required

The following links will require an internet connect.

This suite of programs and documentation is available for download. Link to an Evaluation zPAK Option that includes the program members, documentation and control files.

A good place to start is The SimoTime Home Page via Internet Connect for access to white papers, program examples and product information.

Explore The Micro Focus Web Site via Internet Connect for more information about products and services available from Micro Focus.

Glossary of Terms

Explore the Glossary of Terms for a list of terms and definitions used in this suite of documents and white papers.

Comments or Feedback

This document was created and is copyrighted and maintained by SimoTime Technologies.

If you have any questions, suggestions, comments or feedback please call or send an e-mail to: helpdesk@simotime.com

We appreciate hearing from you.

Company Overview

Founded in 1987, SimoTime Technologies is a privately owned company. We specialize in the creation and deployment of business applications using new or existing technologies and services. We have a team of individuals that understand the broad range of technologies being used in today's environments. This includes the smallest thin client using the Internet and the very large mainframe systems. There is more to making the Internet work for your company's business than just having a nice looking WEB site. It is about combining the latest technologies and existing technologies with practical business experience. It's about the business of doing business and looking good in the process. Quite often, to reach larger markets or provide a higher level of service to existing customers it requires the newer Internet technologies to work in a complementary manner with existing corporate mainframe systems.

Whether you want to use the Internet to expand into new market segments or as a delivery vehicle for existing business functions simply give us a call or check the web site at http://www.simotime.com

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A Very Simple Assembler Program, Set Return Code to Zero and Return to Caller

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