Apollo PRISM

Parallel Reduced Instruction Set Multiprocessing ( PRISM, English for Parallel Computing with a reduced instruction set ) is a specific design philosophy for processors. It represents a subspecies of the Reduced Instruction Set Computing (RISC ) ​​processor design

History

The processors were developed by Apollo Computer, and first time in its workstation DN 10000 ( DN 10k) used. Said processor working with 64 bits, and was equipped with a dual- cache, the instruction cache 128 Kb and 64 Kb data cache. A computer system can contain up to 4 of these processors are connected via a rapid X - bus. At this 64 -bit bus of the main memory and the graphics system is directly connected. The external, also 64 bits wide, X -Bus worked with 150 MByte / s

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

The takeover of the company by Apollo Hewlett -Packard of the in-process PRISM II processor was no longer manufactured. Hewlett -Packard built-in functions in their own PA - RISC processor.

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