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  2. Program status word - Wikipedia

    en.wikipedia.org/wiki/Program_status_word

    Contained within the PSW are the two bit condition code, representing zero, positive, negative, overflow, and similar flags of other architectures' status registers. Conditional branch instructions test this encoded as a four bit value, with each bit representing a test of one of the four condition code values, 2 3 + 2 2 + 2 1 + 2 0. (Since IBM ...

  3. IBM System/360 architecture - Wikipedia

    en.wikipedia.org/wiki/IBM_System/360_architecture

    The processor stores the PSW, with an interruption code inserted, into the old PSW location and then loads the PSW from the new PSW location. This generally replaces the instruction address, thereby effecting a branch, and (optionally) sets and/or resets other fields within the PSW, thereby effecting a mode change.

  4. Status register - Wikipedia

    en.wikipedia.org/wiki/Status_register

    A status register, flag register, or condition code register (CCR) is a collection of status flag bits for a processor.Examples of such registers include FLAGS register in the x86 architecture, flags in the program status word (PSW) register in the IBM System/360 architecture through z/Architecture, and the application program status register (APSR) in the ARM Cortex-A architecture.

  5. Predication (computer architecture) - Wikipedia

    en.wikipedia.org/wiki/Predication_(computer...

    Predication's simplest form is partial predication, where the architecture has conditional move or conditional select instructions. Conditional move instructions write the contents of one register over another only if the predicate's value is true, whereas conditional select instructions choose which of two registers has its contents written to ...

  6. Program-specific information - Wikipedia

    en.wikipedia.org/wiki/Program-specific_information

    CAT (Conditional Access Table) PMT (Program Mapping Table) NIT (Network Information Table) The MPEG-2 specification does not specify the format of the CAT and NIT. PSI is carried in the form of a table structure. Each table structure is broken into sections, although some tables like a PMT cannot have more than one section.

  7. PSW - Wikipedia

    en.wikipedia.org/wiki/PSW

    PSW may refer to: PSW Science, the oldest scientific society in Washington, D.C. Personal Support Worker, Canada; PlayStation World, a UK magazine; Program status word, a control register in IBM mainframe computers; Baillie–PSW primality test in mathematics; Part Submission Warrant in production part approval process; Post Study Work Visa, UK

  8. Ternary conditional operator - Wikipedia

    en.wikipedia.org/wiki/Ternary_conditional_operator

    The detailed semantics of "the" ternary operator as well as its syntax differs significantly from language to language. A top level distinction from one language to another is whether the expressions permit side effects (as in most procedural languages) and whether the language provides short-circuit evaluation semantics, whereby only the selected expression is evaluated (most standard ...

  9. Baillie–PSW primality test - Wikipedia

    en.wikipedia.org/wiki/Baillie–PSW_primality_test

    The following computer algebra systems and software packages use some version of the Baillie–PSW primality test. Maple 's isprime function, [ 12 ] Mathematica 's PrimeQ function (that already uses 2020's version of Baillie–PSW), [ 13 ] PARI/GP 's isprime and ispseudoprime functions, [ 14 ] and SageMath 's is_pseudoprime function [ 15 ] all ...