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Complex instruction set computer

A complex instruction set computer (CISC /ˈsɪsk/) 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. The term was retroactively coined in contrast…

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Complex instruction set computer

Nodes76
Edges75
Triples13
Avg. degree1.97
Density0.026316
Components1

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Important terminology

cisc instructions risc complex also instruction memory designs x86 microcode architecture processor computer load store architectures set superscalar used well

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SubjectPredicateObjectConfidenceSrc
procedure callsinstance ofto design instruction sets that directly support high-level programming constructs0.80text
loop controlinstance ofto design instruction sets that directly support high-level programming constructs0.80text
and complex addressing modesinstance ofto design instruction sets that directly support high-level programming constructs0.80text
allowing data structureinstance ofto design instruction sets that directly support high-level programming constructs0.80text
array accesses to be combined into single instructionsinstance ofto design instruction sets that directly support high-level programming constructs0.80text
Fortran or Algol were not always available or appropriateinstance ofas high level languages0.80text
the ubiquitous x86instance ofThis governs re-implementations of older architectures0.80text
register renaminginstance ofand several implementations of which have complex internals0.80text
a reorder bufferinstance ofand several implementations of which have complex internals0.80text
is a RISCinstance ofand several implementations of which have complex internals0.80text
while Minimal CISC has 8 instructionsinstance ofand several implementations of which have complex internals0.80text
but is clearly a CISC because it combines memory accessinstance ofand several implementations of which have complex internals0.80text

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