NDLI: Hardware-software interactions in SYMBOL-2R's operating system

Content Provider	ACM Digital Library
Author	Oldehoeft, A. E. Richards, H.
Abstract	This paper describes the chief attributes of the Virtual Processor placed at the disposal of each user of the SYMBOL-2R time-shared multiprocessor system, and the mechanisms by which SYMBOL's hardwired operating system manages processing-mode transitions for individual Virtual Processors and allocates hardware resources -- processors and memory space -- among competing Virtual Processors. It describes the provisions by which the unusually high-level capabilities of the hardware are augmented by software, and contrasts the structure of the software component of the operating system with that of the hardware component. Finally, it describes the hardware/software partition of resource-allocation functions, in which allocation policies are controlled by software and executed by hardware.
Starting Page	113
Ending Page	118
Page Count	6
File Format	PDF
DOI	10.1145/642089.642109
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1975-01-20
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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Hardware-software interactions in SYMBOL-2R's operating system