Chapter 4

Instruction Descriptions

4.1 Instruction Set Overview

This chapter describes the instructions implemented by the Alpha architecture. The instruction set is divided into the following sections:

Instruction Type

Section

 

 

Integer load and store

4.2

Integer control

4.3

Integer arithmetic

4.4

Logical and shift

4.5

Byte manipulation

4.6

Floating-point load and store

4.7

Floating-point control

4.8

Floating-point branch

4.9

Floating-point operate

4.10

Miscellaneous

4.11

VAX compatibility

4.12

Multimedia (graphics and video)

4.13

 

 

Within each major section, closely related instructions are combined into groups and described together.

The instruction group description is composed of the following:

The group name

The format of each instruction in the group, which includes the name, access type, and data type of each instruction operand

The operation of the instruction

Exceptions specific to the instruction

The instruction mnemonic and name of each instruction in the group

Instruction Descriptions 4–1

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Compaq ECQD2KCTE manual Instruction Set Overview, Instruction Type Section