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SPARC (Scalable Processor ARChitecture) is a reduced instruction set computer (RISC) instruction set architecture originally developed by Sun Microsystems. [1] [2] Its design was strongly influenced by the experimental Berkeley RISC system developed in the early 1980s.
An instruction set architecture (ISA) is an abstract model of a computer, also referred to as computer architecture.A realization of an ISA is called an implementation.An ISA permits multiple implementations that may vary in performance, physical size, and monetary cost (among other things); because the ISA serves as the interface between software and hardware.
A common misunderstanding of the phrase "reduced instruction set computer" is that instructions are simply eliminated, resulting in a smaller set of instructions. [35] In fact, over the years, RISC instruction sets have grown in size, and today many of them have a larger set of instructions than many CISC CPUs.
Visual Instruction Set, or VIS, is a SIMD instruction set extension for SPARC V9 microprocessors developed by Sun Microsystems. There are five versions of VIS: VIS 1, VIS 2, VIS 2+, VIS 3 and VIS 4. There are five versions of VIS: VIS 1, VIS 2, VIS 2+, VIS 3 and VIS 4.
The SPARC implementation always advances the register window by sixteen registers, meaning that when this happens, many of these saved registers will not even contain useful data. Some have criticized the original studies that led to the implementation of register windows, for considering only programs in isolation and ignoring multitasking ...
The floating-point unit consists of five functional units. One executes floating point adds and subtracts, one multiplies, one divides and square-roots. Two units are for executing SIMD instructions defined by the Visual Instruction Set (VIS). The floating-point register file contains thirty-two 64-bit registers.
A given instruction set can be implemented in a variety of ways. All ways of implementing a particular instruction set provide the same programming model, and all implementations of that instruction set are able to run the same executables. The various ways of implementing an instruction set give different tradeoffs between cost, performance ...
Elbrus-90micro (1998–2010) is a computer line based on SPARC instruction set architecture (ISA) microprocessors: MCST R80, R150, R500, R500S and MCST-4R working at 80, 150, 500, and 1000 MHz. The Elbrus-90 is used to control the S-400 missile system. [10]