operations code

a part of an assembly language instruction that represents an operation to be performed by the processor. [SILC99

A value passed to a routine, such as the DrawPicture or PrGeneral procedure, that determines how the routine should operate See also: operation code

a keyword which tells the translator how to interpret the operands

an instruction that bypasses some of the usual steps in the programming process

A number in a macro-instruction that specifies what the instruction should do.

The binary number that represents a specific microprocessor instruction.

The data that represents a microprocessor instruction.

Operation code that defines how to interpret the vertices in an execute buffer or how to change the state of the system.

A binary value that is recognized by a processor as one of the instructions in its instruction set.

In computer science, an opcode is the portion of a machine language instruction that specifies the operation to be performed. The term is an abbreviation of Operation Code. Their specification and format will be laid out in the instruction set architecture (ISA) of the computer hardware component in question—normally a CPU, but possibly a more specialised unit.