# Introduction

This document describes the Qualcomm® Hexagon™ processor instruction
set simulator, which simulates the execution of Hexagon programs.

This document is intended for developers and support staff who work
with system simulations and co-simulation models.

## Conventions

Computer text, code names, and code samples appear in a different
font, for example,

printf(“Hello world\n”).

The following notation is used to define command syntax:

- Square brackets enclose optional items, for example, [label].
- **Bold** indicates literal symbols, for example, [**comment**].
- The vertical bar character, |, indicates a choice of items.
- Parentheses enclose a choice of items for example,
(**add** | **del**).
- An ellipsis, … , follows items that can appear more than once.

## Technical assistance

[For assistance or clarification on information in this document,
open a technical support case
at](https://support.qualcomm.com/)
[https://support.qualcomm.com/](https://support.qualcomm.com/).

You will need to register for a Qualcomm ID account and your company must have
support enabled to access our Case system.

Other systems and support resources are listed on <[https://qualcomm.com/support](https://qualcomm.com/support)>`\_\_
[https://qualcomm.com/support/](https://qualcomm.com/support/).

If you need further assistance, you can send an email to
[qualcomm.support@qti.qualcomm.com.](mailto:qualcomm.support%40qti.qualcomm.com)

Last Published: Oct 06, 2026

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