OpenVMS System Services Reference Manual

This document is the second part of the OpenVMS System Services Reference Manual, published in December 1995. It details a collection of routines, known as system services, used by the OpenVMS operating system to manage resources, facilitate interprocess communication, control I/O, and execute other core operating system functions. This specific manual covers system services alphabetically from $GETQUI through Z.

Key highlights include:

• 64-bit Addressing Support: As of Version 7.0, the OpenVMS Alpha operating system supports 64-bit virtual memory addresses, allowing applications to map and access data beyond previous 32-bit limits. The manual identifies new and enhanced services that manage this 64-bit address space.
• Target Audience: System and application programmers who need to call these system services.
• Supersedes: This manual updates and replaces previous versions for OpenVMS AXP Version 6.1 and OpenVMS VAX Version 6.1, supporting OpenVMS Alpha Version 7.0 and OpenVMS VAX Version 7.0.
• Document Structure: It provides detailed descriptions of each system service, including its format, arguments, function codes (where applicable), and condition values returned.
• Availability: The document is also available on CD-ROM.