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  2. Comparison of instruction set architectures - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_instruction...

    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.

  3. Instruction set architecture - Wikipedia

    en.wikipedia.org/wiki/Instruction_set_architecture

    increment, decrement in some ISAs, saving operand fetch in trivial cases. Perform bitwise operations, e.g., taking the conjunction and disjunction of corresponding bits in a pair of registers, taking the negation of each bit in a register. Compare two values in registers (for example, to see if one is less, or if they are equal).

  4. Power ISA - Wikipedia

    en.wikipedia.org/wiki/Power_ISA

    Power ISA is an evolution of the PowerPC ISA, created by the mergers of the core PowerPC ISA and the optional Book E for embedded applications. The merger of these two components in 2006 was led by Power.org founders IBM and Freescale Semiconductor. Prior to version 3.0, the ISA is divided into several categories.

  5. Compressed instruction set - Wikipedia

    en.wikipedia.org/wiki/Compressed_instruction_set

    In most real-world examples, compressed instructions are 16 bits long in a processor that would otherwise use 32-bit instructions. The 16-bit ISA is a subset of the full 32-bit ISA, not a separate instruction set. The smaller format requires some tradeoffs: generally, there are fewer instructions available, and fewer processor registers can be ...

  6. IA-64 - Wikipedia

    en.wikipedia.org/wiki/IA-64

    IA-64 (Intel Itanium architecture) is the instruction set architecture (ISA) of the discontinued Itanium family of 64-bit Intel microprocessors.The basic ISA specification originated at Hewlett-Packard (HP), and was subsequently implemented by Intel in collaboration with HP.

  7. MIPS architecture - Wikipedia

    en.wikipedia.org/wiki/MIPS_architecture

    Compare and branch, with a 1 instruction delay after the branching condition check: Endianness: Bi: Page size: 4 KB: Extensions: MDMX, MIPS-3D: Open: Partly. The R16000 processor has been on the market for more than 20 years and as such cannot be subject to patent claims. Therefore, the R16000 and older processors are fully open. Registers ...

  8. Complex instruction set computer - Wikipedia

    en.wikipedia.org/wiki/Complex_instruction_set...

    A complex instruction set computer (CISC / ˈ s ɪ s k /) is a computer architecture in which single instructions can execute several low-level operations (such as a load from memory, an arithmetic operation, and a memory store) or are capable of multi-step operations or addressing modes within single instructions.

  9. RISC-V - Wikipedia

    en.wikipedia.org/wiki/RISC-V

    RISC-V [b] (pronounced "risk-five" [2]: 1 ) is an open standard instruction set architecture (ISA) based on established reduced instruction set computer (RISC) principles. . The project began in 2010 at the University of California, Berkeley, transferred to the RISC-V Foundation in 2015, and on to RISC-V International, a Swiss non-profit entity, in November 20