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The ISA was extended in 1996 to 64 bits, with this revision named PA-RISC 2.0. PA-RISC 2.0 also added fused multiply–add instructions, which help certain floating-point intensive algorithms, and the MAX-2 SIMD extension, which provides instructions for accelerating multimedia applications. The first PA-RISC 2.0 implementation was the PA-8000 ...
MAX-1 was first implemented with the PA-7100LC in 1994. It is usually attributed as being the first SIMD extensions to an ISA. The second version, MAX-2, was for the 64-bit PA-RISC 2.0 ISA. It was first implemented in the PA-8000 microprocessor released in 1996. [1]
The PA-8000 is a four-way superscalar microprocessor that executes instructions out-of-order and speculatively. [1] [4] These features were not found in previous PA-RISC implementations, making the PA-8000 the first PA-RISC CPU to break the tradition of using simple microarchitectures and high-clock rate implementation to attain performance.
The varieties of RISC processor design include the ARC processor, the DEC Alpha, the AMD Am29000, the ARM architecture, the Atmel AVR, Blackfin, Intel i860, Intel i960, LoongArch, Motorola 88000, the MIPS architecture, PA-RISC, Power ISA, RISC-V, SuperH, and SPARC. RISC processors are used in supercomputers, such as the Fugaku. [8]
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.
HP Integrity Superdome, or the "black" one Superdome PA-RISC, or the "white" one. The HPE Superdome is a high-end server computer designed and manufactured by Hewlett Packard Enterprise (formerly Hewlett-Packard). The product's most recent version, "Superdome 2," was released in 2010 supporting 2 to 32 sockets (up to 128 cores) and 4 TB of memory.
The last version, 3.3, was released in early 1995, for the Motorola 68000 family based NeXT computers, Intel x86, Sun SPARC, and HP PA-RISC-based systems. NeXT separated the underlying operating system from the application frameworks, producing OpenStep .
ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of RISC instruction set architectures (ISAs) for computer processors. Arm Holdings develops the ISAs and licenses them to other companies, who build the physical devices that use the instruction set.