PRISM (processor architecture)

from Wikipedia, the free encyclopedia

Parallel Reduced Instruction Set Multiprocessing ( PRISM , English for parallel computing with reduced instruction set ) is a processor architecture . It is a subspecies of Reduced Instruction Set Computing (RISC) processor design.

history

The processors were developed by Apollo Computer and used for the first time in their workstation DN 10000 (DN 10k). The processor worked with 64 bit and was equipped with a dual cache , 128 kB instruction cache and 64 kB data cache. A computer system can contain up to 4 of these processors, which are connected via a fast X bus . The main memory and the graphics system are connected directly to this 64-bit bus. The external, also 64-bit wide, X-Bus worked at 150 Mbytes / s.

Based on the processors from Motorola M 680x0 used in the smaller workstations and servers ( Domain Server Processor ) , the processor was named A 88000 (Apollo 88k). The A-88000 processor was the fastest CPU available at the time.

With the takeover of the Apollo company by Hewlett-Packard , the PRISM-II processor under development was no longer manufactured. Hewlett-Packard built functions into their own PA-RISC processor.

literature

  • Christian Müller-Schloer, Ernst Schmitter: RISC workstation architectures: processors, systems and products. Springer, Berlin 1991, ISBN 3-540-54050-4 , pp. 223-225.
  • B. Wolfinger: Networked and complex IT systems: Industry program for the 18th annual conference of the Society for IT. Springer, Berlin 1988, ISBN 3-540-50462-1 (original from University of California).

Web links