Texas Instruments TMS320C3 Series User manual

TMS320C3x DSP Starter Kit
User’s Guide

Running Title—Attribute Reference
ii
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Copyright 1996, Texas Instruments Incorporated

iii Read This First
Preface
Read This First
About This Manual
This book describes the DSP (digital signal processing) Starter Kit (DSK) and
how to use the DSK with these tools:
- The DSK assembler
- The DSK debugger
How to Use This Manual
The goal of this book is to help you learn how to use the DSK assembler and
debugger. This book is divided into four distinct parts:
- Part I: Hands-On Information is presented first so that you can start us-
ing your DSK the same day you receive it.
J Chapter 1 describes the features and provides an overview of the
TMS320C3x DSP Starter Kit.
J Chapter2containsinstallationinstructionsforyourassemblerandde-
bugger. It lists the hardware and software tools you’ll need to use the
DSK and tells you how to set up its environment.
J Chapter 3 lists the key features of the assembler and debugger and
tells you the steps you need to take to assemble and debug your pro-
gram.
- Part II: Functional Description contains a functional overview of the
DSK,which includes the TMS320C3x DSK functional diagram, a descrip-
tion of the DSK hardware components and software operation.
- Part III: Assembler Description contains detailed information about us-
ing the assembler.
J Chapter 5 explains how to create DSK assembler source files and in-
voke the assembler.
J Chapter6discussesthevaliddirectivesandgivesyouanalphabetical
reference to these directives.

Notational Conventions
iv
- PartIV:DebuggerDescriptioncontainsdetailedinformationaboutusing
the debugger. Chapter 7 explains how to invoke the DSK debugger, and
use its function keys, and debugger commands.
- Part V: Appendices contains a description of the communicationskernel
source code, the DSK circuit board dimensions and schematic diagrams,
thedatasheet ofthe TLC32040that providesall specificationsof theana-
log interface circuit, and a glossary.
Notational Conventions
This document uses the following conventions.
- Program listings, program examples, and interactive displays are shown
in a special typeface similar to a typewriter’s. Examples use a bold
version of the special typeface for emphasis; interactive displays use a
bold version ofthe specialtypefaceto distinguish commandsthat you
enter from items that the system displays (such as prompts, command
output, error messages, etc.).
Hereisasampleprogramlistingofabitfilegeneratedbytheaccumulator:
0x00809800 directive .word 1,2,3
0x00809800 0x00000001 <word>
0x00809801 0x00000002 <word>
0x00809802 0x00000003 <word>
Here is an example of a system prompt and a command that you might
enter:
C:\dsk3a testa
- In syntax descriptions, the instruction, command, or directive is in a bold
typefacefontandparametersareinan
italictypeface .Portionsofasyntax
that are in bold should be entered as shown; portions of a syntax that are
in
italics describe the type of information that should be entered. Syntax
that is entered on a command line is centered in a bounded box. Syntax
that is used in a text file is left-justified in an unbounded box. Here is an
example of command-line syntax:
dsk3a filename
dsk3a is a command. The command invokes the assembler and has one
parameter,
filename , which is required. When you invoke the assembler,
you supply the name of the file that the assembler uses as input.

Notational Conventions/Information About Warnings
v Read This First
- Inassemblersyntax statements, column 1 is reserved for the first charac-
ter of a label or symbol. If the label or symbol is
optional , it is usually not
shown.Ifitisa
required parameter,itisshownstartingagainsttheleftmar-
ginoftheshaded box,as inthe examplebelow.No instruction,command,
directive, or parameter, other than a symbol or label, should begin in col-
umn 1.
symbol .set value
The symbol is required for the .set directive and must begin in column 1.
The
value is also required.
- Squarebrackets( [and ]) identifyanoptionalparameter. Ifyou useanop-
tionalparameter,youspecifytheinformationwithinthebrackets;youdon’t
enter the brackets themselves. Here’s an example of a directive that has
an optional parameter:
.entry [ value ]
The .entry directive has one parameter, which is optional.
- Some directives can have a varying number of parameters. For example,
the.int directive can have up to 100 parameters. The syntax for thisdirec-
tive is:
.int value
1
[ , ... , value
n
]
This syntax shows that .int must have at least one value parameter, but
youhave the option of supplying additional value parameters, each sepa-
rated from the previous one by a comma.
Information About Warnings
This book contains warnings.
This is an example of a warning statement.
A warning statement describes a situation that could potentially
cause harm to you.
Note that .int does not
begin in column 1.

Related Documentation From Texas Instruments
vi
Related Documentation From Texas Instruments
The following books describe the TMS320C3x and related support tools. To
obtain a copy of any of these TI documents, call the Texas Instruments Litera-
ture Response Center at (800) 477–8924. When ordering, please identify the
book by its title and literature number.
TMS320C3x User’s Guide (literature number SPRU031) describes the ’C3x
32-bitfloating-pointmicroprocessor (developedfor digitalsignal proces-
sing as well as general applications), its architecture, internal register
structure, instruction set, pipeline, specifications, and DMA and serial
port operation. Software and hardware applications are included.
TMS320C32 Addendum to the TMS320C3x User’s Guide (literature num-
berSPRU132)describestheTMS320C32floating-pointmicroprocessor
(developedfor digital signal processing as well as general applications).
Discussesitsarchitecture,internalregisterstructure, specifications,and
DMAandserial portoperation. Hardwareapplications arealso included.
TMS320Floating-Point DSP Assembly Language Tools User’sGuide (lit-
erature number SPRU035) describes the assembly language tools (as-
sembler, linker, and other tools used to develop assembly language
code), assembler directives, macros, common object file format, and
symbolic debugging directives for the ’C3x and ’C4x generations of de-
vices.
TMS320 Floating-Point DSP Optimizing C Compiler User’s Guide (litera-
turenumberSPRU034)describestheTMS320floating-pointCcompiler.
This C compiler accepts ANSI standard C source code and produces
TMS320 assembly language source code for the ’C3x and ’C4x genera-
tions of devices.
TMS320C3x C Source Debugger User’s Guide (literature number
SPRU053)tellsyouhowtoinvokethe’C3xemulator,evaluationmodule,
and simulator versions of the C source debugger interface. This book
discusses various aspects of the debugger interface, including window
management, command entry, code execution, data management, and
breakpoints. It also includes a tutorial that introduces basic debugger
functionality.
TMS320C30 Evaluation Module Technical Reference (literature number
SPRU069) describes board-level operation of the TMS320C30 EVM.
TMS320DSPDesigner’s Notebook Volume1 (literaturenumberSPRT125)
collection of designer’s notebook pages.
TMS320C40 Data Sheet (literature number SLAS014) describes the analog
interface circuit device and gives its electrical specifications.

If You Need Assistance
vii Read This First
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2) Please mention the full title of the book, the literature number from the lower-right corner of the back cover, and the
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Trademarks
viii
Trademarks
AT is a trademark of International Business Machines Corp.
IBM, PC, and PC-DOS are trademarks of International Business Machines
Corp.
MS-DOS is a registered trademark of Microsoft Corporation.
Windows is a trademark of Microsoft Corporation.
OS/2 is a trademark of International Business Machines Corp.

Contents
ix
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Describes the key features and provides an overview of the TMS320C3x DSP Starter Kit.
1.1 Key Features of the DSK 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 DSK Overview 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Installing the DSK Assembler and Debugger 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lists the hardware and software you’ll need to install the DSK assembler and debugger; pro-
vides installation instructions for PC systems running DOS.
2.1 What You Need 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware checklist 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software checklist 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSK module connections 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Step 1: Connecting the DSK to Your PC 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Step 2: Installing the DSK Software 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Step 3: Modifying Your config.sys File 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Step 4: Modifying the PATH Statement 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 Step 5: Verifying the Installation 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation errors 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Overview of a Code Development and Debugging System 3-1. . . . . . . . . . . . . . . . . . . . . . . . . .
Providesanoverviewoftheassembleranddebugger,anddescribestheoverallcodedevelop-
ment process.
3.1 Description of the DSK Assembler 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key features of the assembler 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Description of the DSK Debugger 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key features of the debugger 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Developing Code for the DSK 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Getting Started 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Functional Overview 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Describes the DSK hardware and software functionality.
4.1 DSK Hardware Interface 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host hardware interface 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host communications 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TLC32040 AIC hardware interface 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
x
DSK memory map 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 DSK Communications Kernel 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data packets 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commands 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Debugging functions 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interrupts 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 TLC32040 AIC Initialization 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resetting the AIC 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initializing the ’C31 timer 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initializing the ’C31 serial port 4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initializing the AIC 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Primary communications 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Secondary communications 4-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Host Software 4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host communications target routines 4-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host communications driver routines 4-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host communications object routines 4-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Using the DSK Assembler 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tells you how to invoke and use the DSK assembler; describes valid source file formats.
5.1 Creating DSK Assembler Source Files 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using valid labels 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the mnemonic field 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the operand field 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commenting your source file 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Constants 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Binary integers 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Decimal integers 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hexadecimal integers 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Floating-point constants 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Character constants 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Character Strings 5-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Symbols 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Labels 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Constants 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Predefined symbolic constants 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5 Expression Analyzer 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.6 Assembling Your Program 5-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.7 Placing Code Sections in Memory Locations 5-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Assembler Directives 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tells you how to use assembler directives and describes the available DSK directive.
6.1 Using the DSK Assembler Directives 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Directives That Define Sections 6-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
xi Contents
6.3 Directives That Initialize Constants 6-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4 Directives That Reference Other Files 6-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.5 Directives That Enable Conditional Assembly 6-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.6 Directives That Align the Section Program Counter 6-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.7 Directives That Define Symbols at Assembly Time 6-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.8 Miscellaneous Directives 6-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.9 Directives Reference 6-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Using the DSK Debugger 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tells you how to invoke and use the debugger and describes the debugger environment. Dis-
cusses valid debugger commands.
7.1 Invoking the Debugger 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying a list of available options (? or Help option) 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the parallel printer port (LPT = 3 or LPT# option) 7-3. . . . . . . . . . . . . . . . . . . . . .
Select the parallel printer port at a particular address (PORT option) 7-3. . . . . . . . . . . . . .
Automatically search for a printer port (TEST option) 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Understanding the Debugger Windows 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLY window 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU REGISTER window 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEMORY window 7-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMMAND window 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 Using the Help Menu 7-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4 Using Software Breakpoints 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting a software breakpoint 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearing a software breakpoint 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finding the software breakpoints that are set 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5 Debugger Commands 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.6 Quick Reference Guide 7-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A Communications Kernel Source Code A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contains the source code for the TMS320C3x DSK communications kernel.
B DSK Circuit Board Dimensions and Schematic Diagrams B-1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Contains the circuit board dimensions and the schematic diagrams for the DSP Starter Kit.
B.1 Hardware Component Overview B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2 Schematics B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Host Interface Control Design Notes B-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C Glossary C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defines acronyms and key terms used in this book.

Running Title—Attribute Reference
xii
Figures
1–1 TMS320C3x DSK Block Diagram 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–1 Connecting Your Parallel Printer Port Cable and Transformer Into Your DSK Board 2-4. . . .
2–2 DOS Command Setup for the DSK Environment (Sample autoexec.bat File) 2-6. . . . . . . . . .
2–3 Basic Debugger Display 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 Basic Debugger Display 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 DSK Software Development Flow 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–1 TMS320C3x DSK Functional Circuit Diagram 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–2 Parallel Port Control Register (0x37A) 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–3 Parallel Port Status Register (0x379) 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–4 DSK Memory Map 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–5 Data-Packet Structure 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–6 Single-Step Flow Diagram 4-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–7 Primary Communication Data Format 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–8 Secondary Communication Data Format 4-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–9 Control Register Bit Fields 4-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–1 DISASSEMBLY Window 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–2 CPU REGISTER Window 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–3 MEMORY Window 7-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–4 COMMAND Window 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–5 Monitor Information Screen 7-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B–1 TMS320C3x DSP Starter Kit (DSK) Circuit Board Dimensions B-2. . . . . . . . . . . . . . . . . . . . . .

Running Title—Attribute Reference
xiii Contents
Tables
4–1 Single-Step Pipeline Flow 4-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–2 Primary Communications Mode Selection 4-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5–1 Indirect Addressing 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5–2 ANSI C Math Library Functions Supported by the DSK Assembler 5-12. . . . . . . . . . . . . . . . . .
5–3 Operators Used in Expressions 5-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5–4 Summary of Assembler Options 5-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6–1 Assembler Directives Summary 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–1 Summary of Debugger Options 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–2 Editing Command Keys 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–3 Command-Line Editing 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–4 Command-Line Buffer Manipulation 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–5 Running Programs 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–6 Displaying and Changing Data 7-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–7 Managing Breakpoints 7-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–8 Loading Programs 7-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–9 Performing System Tasks 7-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–10 Function Key Shortcuts for DISASSEMBLY Window Active 7-13. . . . . . . . . . . . . . . . . . . . . . . .
7–11 Function Key Shortcuts for CPU Window Active 7-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–12 Function Key Shortcuts for MEMORY Window Active 7-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7–13 Function Key Shortcuts for COMMAND Window Active 7-14. . . . . . . . . . . . . . . . . . . . . . . . . . .

Running Title—Attribute Reference
xiv
Examples
2–1 Port Selection Display 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 File rand.asm 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–1 Initialize the Serial Port Global Control Register 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–2 Setting the TA and TB Registers 4-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6–1 Sections Directives 6-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1
Introduction
This chapter provides an overview of the TMS320C3x DSP Starter Kit (DSK).
The’C3xDSKisalow-cost,simple,high-performancestand-aloneapplication
development board that lets you experiment with and use TMS320C3x DSPs
forreal-time signalprocessing. TheDSK hasaTMS320C31 onboard toallow
full-speed verification of the TMS320C3x code. The DSK also gives you the
freedom to build new boards, create your own software on a host PC, down-
loadthesoftwaretotheDSK,andrunthesoftwareontheDSKboard.Thesup-
plied debugger is windows-oriented, simplifying code development and de-
bugging capabilities.
Topic Page
1.1 Key Features of the DSK 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 DSK Overview 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1

Key Features of the DSK
1-2
1.1 Key Features of the DSK
This section details the key features of the TMS320C3x DSP Starter Kit.
- Industry-standard TMS320C31 floating-point DSP
- 40-ns instruction cycle time, 50 MFLOPS, 25 MIPS
- Standard or enhanced parallel printer port interface which connects to a
hostPCand allowstheTMS320C31 to communicatewithPC programs
- Analog data acquisition via the TLC32040 analog interface circuit (AIC ):
J Variable rate analog-to-digital converter (ADC) and digital-to-analog
converter(DAC)with 14-bitdynamic rangeat 20 000samples perse-
cond
J Output reconstruction filter and bypassable, switched-capacitor anti-
alias input filter
- Standard RCA plug connectors for analog input and output that provide
a direct connection to microphone and speaker
- XDS510 emulator connector
Note:
Jumper and header are not installed.
- Expansion connectors, which route all the TMS320C31 pins for use with
DSK daughterboards

DSK Overview
1-3 Introduction
1.2 DSK Overview
Figure 1–1 depicts the block diagram of the TMS320C3x DSK hardware. The
basic components are the TMS320C31 DSP, the TLC32040 AIC, expansion
connectors,systemclock,parallelprinterportinterface,andtri-colorLED.The
parallelprinterportconnectstheDSKtoahostPCandallowstheTMS320C31
to communicate with PC programs.
All of the signals for the ’C3x are routed to expansion connectors. The expan-
sion connectors include four 32-pin headers, an 11-pin jumper block, and a
12-pin XDS510 header.
The TLC32040 AIC interfaces to the TMS320C3x serial port. A jumper block
allows removal of this connection to route the serial port to a DSK daughter-
cardthatyou supply.Two RCAconnectorsprovideanaloginput andoutput on
the board.
Figure 1–1.TMS320C3x DSK Block Diagram
ÁÁ
ÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
Á
Á
Á
ÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
Á
I/O
expansion
connector
Parallel
port
interface
Serial port
A23–A0
D31–D0
Control
TMS320C31–50
Emulation port
TLC32040
AIC
XDS510
MPSD port
Analog
in
Analog
out
SeeAppendixB, DSKCircuitBoardDimensionsandSchematicDiagrams ,for
an explanation of the basic DSK components.

1-4

2-1
Installing the DSK
Assembler and Debugger
ThischapterdescribeshowtoinstalltheDSPStarterKit(DSK)onaPCsystem
running under DOS.
Topic Page
2.1 What You Need 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Step 1: Connecting the DSK to Your PC 2-4. . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Step 2: Installing the DSK Software 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Step 3: Modifying Your config.sys File 2-5. . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Step 4: Modifying the PATH Statement 2-6. . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 Step 5: Verifying the Installation 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2

What You Need
2-2
2.1 What You Need
Thefollowing checklists detail items that are shipped with the DSK assembler
and debugger and any additional items you’ll need to use this tool. The DSK
module connections with a parallel printer port are also discussed in this sec-
tion.
Hardware checklist
Host An IBMPC/ATor 100%-compatible PC with a hard disk system
and a 1.2 megabyte floppy-disk drive and parallel printer port com-
munication link
Memory Minimum of 640K bytes
Display Monochrome or color (color recommended)
Power requirements AULClassIIpowersupplywitha2.1-mmpowerjackconnectorthat
provides 7–12 Vdc or 6–9 Vac and at least 400–1500 mA, which is
common to most wall-mounted DC transformers. For isolated wall
mountsupplies, the polarityofthe 2.1 mm powerjack does not mat-
ter. Laboratory-type power supplies with case grounds are not rec-
ommended since they can create ground loops and possibly create
a short circuit through the DSK full-wave rectifier.
Note:
- You may want to use the DSK’s on-board power supply and regulators
for external circuits. If so, do not overload the circuit. External loads will
cause the regulators to operate at a higher temperature. Loads >50 mA
are not recommended.
- If you make modifications or you are using an external laboratory power
supply, be sure you connect it to the DSK correctly; the DSK is not war-
ranted after you make modifications to it.
Tominimize riskofelectricshockandfirehazard,thepowersupply
adapter should be rated UL class 2. The adapter and personal
computer providing energy to this product should be certified by
one or more of the following: UL, CSA, VDE, TUV.