Difference between revisions of "VAX/VMS Version 1.0"
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* virtual memory management for the execution of large programs | * virtual memory management for the execution of large programs | ||
* event-driven priority scheduling | * event-driven priority scheduling | ||
| − | * shared memory, | + | * shared memory, file, and interprocess communication data protection based on ownership and application groups |
* user privilege and resource allocation control | * user privilege and resource allocation control | ||
* easy to-use, easily extended command language | * easy to-use, easily extended command language | ||
Latest revision as of 21:17, 18 June 2022
VAX/VMS is a general purpose operating system for the VAX-11/780 series systems developed by the Digital Equipment Corporation in 1977.
It provides an environment for the concurrent execution of multiuser timesharing, batch, and time-critical applications written in BASIC, COBOL, FORTRAN, and assembly language.
Features
According to the software product description, the features of VAX/VMS are as follows:
- virtual memory management for the execution of large programs
- event-driven priority scheduling
- shared memory, file, and interprocess communication data protection based on ownership and application groups
- user privilege and resource allocation control
- easy to-use, easily extended command language
- multijob batch processing
- tools for developing native and compatibility mode programs
- extensive file and record management services
- programmed system services for process and subprocess control and interprocess communication
- Common Run-Time Procedure Library
- system maintenance utilities
Components
- operating system nucleus, including virtual memory manager, swapper, system services, and input/output device drivers
- user authorization control program
- job initiator and symbiont manager
- card reader input symbiont
- line printer output symbiont
- accounting manager
- Operator Communications Manager
- error logging and print utility
- DCl command interpreter
- MCR command interpreter
- interactive and batch editors
- MACRO assembler
- linker with cross reference
- library maintenance utility
- Common Run-Time Procedure Library
- symbolic debugger for native programs
- Record Management Services for sequential and relative file organization record processing, plus multikey indexed file organization record processing (indexed files are available through compatibility mode programming languages only)
- FILES·11 disk file manager
- ANS Level 3 magnetic tape file manager
- Sort utility
- File Management utilities
- File Differences utility
- File Dump utility
- Disk Backup/Restore utilities
- Disk Structure Verification utility
- Disk Bad Block locator utility
- Software Maintenance Release Update utility
