Reference Guide

Preface

This manual describes the use of the Precision Architecture RISC

(PA-RISC) Assembler on HP 9000 computers.

You need to be familiar with the machine instructions to use the

Assembler. For a complete description of the machine instruction set,

refer to PA-RISC 1.1 Architecture and Instruction Set Reference Manual

and PA-RISC 2.0 Architecture.

Note that, throughout this manual, there are references to PA-RISC 1.0,

1.1, and 2.0. Each version of the architecture is a superset of the

preceding version.

Any program written for PA-RISC 1.0 machines will execute on PA-RISC

1.1 and 2.0 machines, but programs using instructions unique to

PA-RISC 1.1 will not execute on PA-RISC 1.0 machines. Any program

written for PA-RISC 1.1 machines will execute on PA-RISC 2.0

machines, but programs using features unique to PA-RISC 2.0 will not

execute on PA-RISC 1.1 or 1.0 machines.

Printing History

New editions are complete revisions of the manual. Technical

addendums or release notes may be released as supplements.

The software version is the version level of the software product at the

time the manual was issued. Many product updates and ﬁxes do not

require manual changes and, conversely, manual corrections may be

done without accompanying product changes. Therefore, do not expect a

one-to-one correspondence between product updates and manual

updates.

Edition Date

Software

Version

First Edition November 1986

Update 1 March 1987

Update 1 Incorporated May 1987