Opcode: Difference between revisions

Revision as of 10:04, 14 February 2023

Revision as of 10:05, 14 February 2023

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Depending on architecture, the ''operands'' may be [[processor register|register]] values, values in the [[call stack|stack]], other [[memory]] values, [[I/O]] ports (which may also be [[Memory-mapped I/O|memory mapped]]), etc., specified and accessed using more or less complex [[addressing mode]]s.{{citation needed|date=October 2015}} The types of ''operations'' include [[arithmetic]], data copying, [[logical operation]]s, and program control, as well as special instructions (such as [[CPUID]] and others).<ref name="Hennessy_2017"/>

[[Assembly language]], or just ''assembly'', is a [[low-level programming language]], which uses [[Assembly language#Opcode mnemonics and extended mnemonics|mnemonic]] instructions and operands to represent [[machine code]].<ref name="Hennessy_2017"/> This enhances the vinayak readability while still giving precise control over the machine instructions. Most programming is currently done using [[high-level programming language]]s,<ref name="langpop"/> which are typically easier for humans to understand and write.<ref name="Hennessy_2017"/> These languages need to be compiled (translated into assembly language) by a [[Operating system|system]]-specific [[compiler]], or run through other compiled programs.<ref name="Swanson_2001"/>

=={{Anchor|SIS}}Software instruction sets==