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IBM RT PC Virtual Resource Manager Programming Reference
International Business Machines Corp.
1st. ed. [1987]
538 p. illus., 8.5" x 8.5", PDF version 1.3.
Converted to PDF by Raymond Stricklin.
Summary
This book describes the Virtual Resource Manager (VRM), which is a collection of processes, device drivers, and commands that control and extend hardware functions for an operating system. The VRM shields the operating system from hardware changes and allows more than one operating system (and their applications) to run simultaneously.
This book also defines the Virtual Machine Interface (VMI) to the VRM. The VMI controls how an operating system communicates with the VRM. This information is useful to developers who design or modify operating systems components that run in the virtual machine environment.
This book is intended for systems programmers and developers who need to understand the role of the Virtual Resource Manager in the RT Personal Computer. The reader of this book is expected to have an understanding of hardware and operating systems fundamentals.
Major elements:
- VRM concepts
- VMI characteristics
- VRM programming environment
- System control instructions
- VRM programming interfaces
- Minidisks and data access operations
- Floating-point services
- VRM debugger
- Supervisor call instructions
- TOC object module format and definition
- Key sequences for system functions
- C language VRM subroutines
- Glossary