IBM High Level Assembler for z/OS, z/VM, and z/VSE V1.6 delivers improved programmer productivity and application reliabilityIBM United States Software Announcement 208-145
June 24, 2008
|At a glance|
High Level Assembler for z/OS, z/VM, and z/VSE V1.6 delivers new capability and function:
- An internal services interface for I/O exits
- Mnemonic suffix tags to eliminate ambiguity between machine instruction and macro mnemonics
- Two new address constants resolving to long-displacement form
- Incremental enhancements to V1R5 are integrated and documented
The High Level Assembler for Linux on System z Feature supports application development on IBM Linux for System z.
For ordering, contact:
Your IBM representative, an IBM Business Partner, or IBM Americas Call Centers at
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High Level Assembler for z/OS®, z/VM®, and z/VSE® V1.6 adds new capabilities to simplify application programming, maintenance, and enhancement tasks. Among these are:
- A HLASM Services Interface delivers important operating system environment services to let you write platform-independent exits and external functions.
- Suffix tags for instruction mnemonics let you use identically-named macro instructions and machine instructions in the same source program.
- Two new address constants provide resolution into long-displacement format, increasing instruction addressability and reducing the need for additional instructions.
- Many enhancements to the previous release are now fully integrated and documented.
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High Level Assembler for z/OS, z/VM, and z/VSE V1.6 is designed to execute on a broad range of
processors and operating system families. For specific prerequisites, refer to the
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|Planned availability dates|
- July 11, 2008 (z/VM, z/VSE, and Linux for System z)
- September 26, 2008 (z/OS)
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High Level Assembler for z/OS, z/VM, and z/VSE V1.6 extends the capabilities of previous releases of High Level Assembler. Among the enhancements are:
- An internal HLASM Services Interface allows user exits to allocate and free storage, to write operator messages, and to access date and time information, enabling you to write exits without operating system-dependent instructions.
- To eliminate possible conflicts between identically-named macros and machine instructions, High Level Assembler supports suffix tags for operation mnemonics. If you need to use a macro and a machine instruction named XXX in the same source program, you may add tags to the mnemonic to indicate the desired resolution, as in this example:
XXX A,B,C Invokes either the macro or machine instruction, whichever is most recently defined XXX: MAC A,B,C Always invokes macro XXX XXX: ASM A,B,C Always invokes assembler instruction XXX
- To enable wider use of long-displacement instructions, High Level Assembler adds the QY-type and SY-type address constants, which resolve their operands to signed 20-bit displacements.
- The ambiguous result of using an Opcode attribute reference (O') in non-conditional assembly statements is avoided by limiting such references to conditional assembly statements.
Among items introduced in the service stream for Release 5 are
- Support for external declaration of PART symbols
- Support for z9-109 instructions and the new ZS3 sub-option for the OPTABLE option
- Support for z10 instructions and the new ZS4 sub-option for the OPTABLE option
- Support for z9 decimal floating-point and other instructions
- Support for three decimal floating-point data types
- Improvements to the FLAG(PAGE0) option, to better diagnose unintended references to low storage
- Ability to add the OPTABLE operand to the ACONTROL statement to allow localized control over mnemonic resolution
- Support for unsigned fixed-point binary constants
- Insignificant leading zeros may be specified on decimal, binary, and hexadecimal self-defining terms
- Clarification of symbol-table information for qualifier symbols
- Support for new z9 instructions
- Integrated support for all System z instructions, including those for the z10 series of processors
- New diagnostics that help programmers create more reliable programs
- The High Level Assembler for Linux on System z Feature supports assembling on IBM Linux for System z. Source, macro, and COPY files can be in single-byte ASCII or EBCDIC, and traditional or Linux ELF object files can be generated.
Accessibility by people with disabilities
A U.S. Section 508 Voluntary Product Accessibility Template (VPAT) containing details on accessibility compliance can be requested at
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High Level Assembler for z/OS, z/VM, and z/VSE V1.6 provides full support for all z/Architecture instructions, with enhancements that enable accurate and reliable programming.
Hardware and software support services
IBM SmoothStart Services and Installation Services are not provided.
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- Software Announcement 204-122 , dated June 8, 2004
- Software Announcement 204-304 , dated December 14, 2004
Business Partner information
If you are a Direct Reseller - System Reseller acquiring products from IBM, you may link directly to Business Partner information for this announcement. A PartnerWorld ID and password are required (use IBM ID).
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High Level Assembler for z/OS®, z/VM®, and z/VSE® V1.6 requires processors supporting Architecture Level Set 1 (ALS-1). It also requires approximately 800K of central storage, and selected features execute under z/OS, z/VM, z/VSE, Linux for System z, and Windows®.
The Program Understanding Tool component of the High Level Assembler Toolkit Feature V1.6 requires a workstation capable of running on Windows 95, NT, XP, or Vista with a minimum of 32 MB memory (64 MB recommended) and at least 20 M of available hard-drive space, an SVGA display configured for at least 256 colors, and a host-system connection or other means of transferring host files to the workstation.
High Level Assembler for z/OS, z/VM, and z/VSE V1.6 executes under z/OS, z/VM, z/VSE, and Linux for System z.
- z/OS: V1R6, and later (5694-A01)
- z/VM: V5R2, and later (5741-A05)
- z/VSE: V3R1, V4, and later (5686-CF8)
High Level Assembler for z/OS, z/VM, and z/VSE V1.6 is upwardly compatible with previous releases of High Level Assembler, with two possible exceptions:
- Opcode Attribute references (O') may be made only in conditional assembly statements.
- New machine instruction mnemonics may conflict with the names of existing customer macros. Such conflicts may be avoided by choosing an appropriate OPTABLE option, or by using the mnemonic tagging syntax introduced in this release.
User group requirements: This announcement satisfies or partially satisfies 8 requirements from one or more of the worldwide user group communities. Groups include COMMON, COMMON Europe, Guide Share Europe (GSE), InterAction (Australia/New Zealand), Japan Guide Share (JGS), SHARE Inc, and other requirement sources.
Requirements satisfied include:
- MR0711016658 Enhance CNOP instruction to align on a quad word boundary for 64-bit instruction processing.
- MR0727043540 Assembler Structured Programming Macros, with loop controls, conditionals, and other standard structures.
- MR0121022821 Add DOEXIT within an IF and EXITIF to the Structured Programming Macros.
- Support Linux on System z by executing on Linux and generating ELF object files.
- Extend the opcode syntax to allow using the same name for a macro and a mnemonic known to the assembler.
- Provide S-type address constants supporting long-displacement instructions.
- Allow comments in the ASMAOPT file.
- Suppress the PAGE0 warning message if it applies to instructions with a non-zero index register.
Customer responsibilities: Detailed planning information is included in the High Level Assembler for z/OS, z/VM, and z/VSE V1.6 Installation and Customization Guide. The changes from previous releases are minimal.
Packaging: All High Level Assembler for z/OS, z/VM, and z/VSE V1.6 components are shipped as host files on 3480 Data Cartridge.
System integrity: High Level Assembler for z/OS, z/VM, and z/VSE V1.6 relies on the security features of the host operating system on which it executes.
Security, auditability, and control
The announced program uses the security and auditability features of the host hardware or operating
system software. The customer is responsible for evaluation, selection, and implementation of
security features, administrative procedures, and appropriate controls in application systems and
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Ordering z/OS through the Internet
ShopzSeries provides an easy way to plan and order your z/OS ServerPac or CBPDO. It will analyze your current installation, determine the correct product migration, and present your new configuration based on z/OS. Additional products can also be added to your order (including determination of whether all product requisites are satisfied). ShopzSeries is available in the U.S., Canada, and several countries in Europe. In countries where ShopzSeries is not available yet, contact your IBM representative (or IBM Business Partner) to handle your order via the traditional IBM ordering process. For more details and availability, visit the ShopzSeries Web site at
Order VM SDO and VSE SIPO through the Internet
ShopzSeries provides an easy way to plan and order System z software upgrades. This now includes VM and VSE. Using ShopzSeries, you can quickly generate orders for VM SDOs and VSE SIPOs. Additionally, ShopzSeries will ensure your order is technically correct (that is, ensures any co-req or pre-req or incompatibility conditions are resolved to ensure timely order placement and processing). ShopzSeries is available in the United States and several countries in Europe. In countries where ShopzSeries is not available yet, contact your IBM representative (or IBM Business Partner) to handle your order via the traditional IBM ordering process. For more details and availability, visit the ShopzSeries Web site at
Current licensees of High Level Assembler and High Level Assembler Toolkit Feature must order this release via MES. Ordering instructions are scheduled to be mailed from IBM Software Delivery and Fulfillment to all current licensees by June 27, 2008.
When High Level Assembler for z/OS, z/VM, and z/VSE V1.6 is available, V1.5 will no longer be available.
Orders for new licenses can be placed now.
Registered customers can access IBMLink for ordering information and charges.
Shipment will not occur before the availability date.
Unless a later date is specified, orders entered before the planned availability date will be assigned a schedule date of one week following availability.
Orders entered after the planned availability date will be assigned a schedule date for the week following order entry.
Basic license monthly license charge Entitlement License option/ identifier Description Pricing metric S01521C HLASM for Linux on Basic MLC System z
Single version charging: To elect single version charging, the customer must notify and identify to IBM the prior program and replacement program and the designated machine the programs are operating on.
Basic machine-readable material: There are no changes to ordering information for basic machine-readable material for High Level Assembler for z/OS, z/VM, and z/VSE V1.6.
Refer to the announcements listed under Reference information for information.
Customization options: Order customization options are unchanged from previous releases. Refer to the announcements listed in the Reference information section.
Optional machine-readable material
To order, select the feature number for the desired distribution medium:
* Contains Restricted Material of IBM
DSLO license: Ordering a DSLO feature will result in IBM maintaining a record of this customer location as a DSLO user only. All material for the DSLO license will be provided through the basic license location. If a user selects DSLO, no other feature numbers are valid for this order and no program materials or updates will be shipped.
Unlicensed documentation: There are no changes to the Unlicensed Documentation from previous releases. Refer to the announcements listed under the Reference information section.
Displayable softcopy publications: High Level Assembler for z/OS, z/VM, and z/VSE V1.6 manuals are offered in displayable softcopy form. All unlicensed manuals are included. The displayable manuals are part of the basic machine-readable material. The files are shipped on the same media type as the basic machine-readable material.
These displayable manuals can be used with the BookManager® READ licensed programs in any of the supported environments. Terms and conditions for use of the machine-readable files are shipped with the files.
Licensed documentation: Subsequent updates (technical newsletters or revisions between releases) to the publications shipped with the product will be distributed to the user of record for as long as a license for this software remains in effect. A separate publication order or subscription is not needed.
Product deliverables are shipped only via Customized Offerings (for example, CBPDO, ServerPac, and SystemPac®).
CBPDO and ServerPac are offered for Internet delivery, where ShopzSeries product ordering is available. Internet delivery of ServerPac may help improve automation and software delivery time. For more details on Internet delivery, refer to the ShopzSeries help information at
Media type for this software product is chosen during the customized offerings ordering process. Based on your customer environment, it is recommended that the highest possible density tape media is selected. Currently offered media types are:
- CBPDOs 3480, 3480 Compressed, 3490E, 3590, and 3592*
- ServerPacs 3480, 3480 Compressed, 3490E, 3590, and 3592*
- SystemPacs 3480, 3480 Compressed, 3490E, 3590, and 3592*
- 3592 is highest density media. Selecting 3592 will ship the fewest number of media.
Once a product becomes generally available, it will be included in the next ServerPac and SystemPac monthly update.
Production of software product orders will begin on the planned general availability date.
- CBPDO shipments will begin one week after general availability on September 23, 2008.
- ServerPac shipments will begin two weeks after inclusion in ServerPac.
- SystemPac shipments will begin four weeks after inclusion in SystemPac due to additional customization, and data input verification.
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|Terms and conditions|
The terms for High Level Assembler for z/OS, z/VM, and z/VSE V1.6, as previously announced in Software announcement 204-122 , dated June 8, 2004, licensed under the IBM Customer Agreement are unaffected by this announcement.
One new feature has been added:
IBM High Level Assembler for Linux on System z (5950)
This feature is intended for standard processors. Customers intending to execute High Level Assembler on IFL processors should order PRPQs 5799-TCQ and 5799-TCR for each IFL.
For customers using the PRPQ on standard processors, you are licensed to and may continue to use licensed copies of the PRPQ only until the date which is the later of 2 years after the order date of the PRPQ, or for one year after the announcement date of the High Level Assembler for Linux on System z Feature. At the end of this period, you will need to order this feature.
Contact your IBM marketing representative for information about ordering.
Program currency: High Level Assembler for z/OS, z/VM, and z/VSE V1.6 (5696-234)
Available until discontinued with 12 months' written notice.
IBM Operational Support Services SupportLine:
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|IBM Electronic Services|
IBM has transformed its delivery of hardware and software support services to help you achieve higher system availability. Electronic Services is a Web-enabled solution that offers an exclusive, no-additional-charge enhancement to the service and support available for IBM servers. These services are designed to provide the opportunity for greater system availability with faster problem resolution and preemptive monitoring. Electronic Services comprises two separate, but complementary, elements: Electronic Services news page and Electronic Services Agent.
The Electronic Services news page is a single Internet entry point that replaces the multiple entry points traditionally used to access IBM Internet services and support. The news page enables you to gain easier access to IBM resources for assistance in resolving technical problems.
The Electronic Service Agent is no-additional-charge software that resides on your server. It monitors events and transmits system inventory information to IBM on a periodic, client-defined timetable. The Electronic Service Agent automatically reports hardware problems to IBM. Early knowledge about potential problems enables IBM to deliver proactive service that may result in higher system availability and performance. In addition, information collected through the Service Agent is made available to IBM service support representatives when they help answer your questions or diagnose problems. Installation and use of IBM Electronic Service Agent for problem reporting enables IBM to provide better support and service for your IBM server.
To learn how Electronic Services can work for you, visit
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For prices, contact your IBM representative.
Entitlement License option/ identifier Description Pricing metric S01521C HLASM for Linux Basic MLC on System z
Prices for existing features are unchanged from the previous release.
Refer to the announcements listed under Reference information for prices and charges for High Level Assembler for z/OS, z/VM, and z/VSE V1.6.
High Level Assembler for z/OS, z/VM, and z/VSE V1.6 adds a feature for High Level Assembler for
Linux on System z. For product reference information, refer to Program Software Announcements
P88100 and P88101, dated November 14, 2005.
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To order, contact the Americas Call Centers, your local IBM representative, or your IBM Business Partner.
To identify your local IBM representative or IBM Business Partner, call 800-IBM-4YOU (426-4968).
Phone: 800-IBM-CALL (426-2255) Fax: 800-2IBM-FAX (242-6329) Internet: email@example.com Mail: IBM Teleweb Customer Support ibm.com Sales Execution Center, Americas North 3500 Steeles Ave. East, Tower 3/4 Markham, Ontario Canada L3R 2Z1 Reference: LE001
The Americas Call Centers, our national direct marketing organization, can add your name to the mailing list for catalogs of IBM products.
Note: Shipments will begin after the planned availability date.
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