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An instruction set, or instruction set architecture (ISA), describes the aspects of a

computer architecture visible to a programmer, including the native datatypes,

instructions, registers, addressing modes, memory architecture, interrupt and

exception handling, and external I/O (if any).

Kõrgtaseme keel

Assembler keel

masinkood

Andmeedastus käsud Data transfer instructions

MOV, LOAD, STORE, ...

Aritmeetika-loogika käsud Arithmetic-logic instructions

AND, OR, ADD, SUB, ?

Hargnemiste (siirete) käsud Branch instructions

JMP, CALL, RET, ?

Pinumälu, sisend-väljund seadmete ja protsessori juhtimine

Stack, I/O, Machine control instructions

PUSH, POP, IN, OUT, NOP, ...