TMS320C5x DSP STARTER KIT USER'S GUIDE

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.if/.else/.endifDirectives ReferenceSyntax .if well-defined expression.else.endifDescriptionThree directives provide conditional assembly: The .if directive marks the beginning of a conditional block. The well-definedexpression is a required parameter.If the expression evaluates to true (nonzero), the assemblerassembles the code that follows it (up to an .else or an .endif).If the expression evaluates to false (0), the assembler assemblescode that follows an .else (if present) or an .endif.The .else directive identifies a block of code that the assembler assembleswhen the .if expression is false (0). This directive is optional in theconditional block; if an expression is false and there is no .else statement,the assembler continues with the code that follows the .endif.The .endif directive terminates a conditional block.Nested .if/.else/.endif directives are not valid.ExampleHere are some examples of conditional assembly:yes .set 1no .set 0B0_Dat .set noB1_Dat .set yesIf_1: .if B0_Dat.ds 0100h.endif.if B1_Dat.ds 0300hIf_2: .endifNote:In this instance, the asm option can be particularly useful in turning on the .ifconditional statement from the command line. For example, you could enter:dsk5a test asm”B0_Dat .set 1”5-20
Directives Reference.liston/.listoffSyntax.liston.listoffDescriptionExampleThe .liston and .listoff directives can be useful in debugging. They overridethe –l assembler option, which turns on the output listing. The source listingis always written to a file with an extension of .lst.Here’s an example of a source file and its output listing file.Source file:**************************************** .liston/off example***************************************.ds 0400h.listoffDATA .word 1,2,3,4,5 ;Do not want this listed!.liston;Note this line isn’t listed.ps 0a00hlacl #PROGlar AR0,#DATArpt #3 ;move 4 words from DS to PStblw *+loop nopbloop.word 0,0,0,0Assembler Directives5-21
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TMS320C5xDSP Starter KitUser’s Gu
Page 3 and 4:
PrefaceRead This FirstAbout This Ma
Page 5 and 6:
Notational Conventions / Informatio
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If You Need AssistanceIf You Need A
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ContentsContentsPart I: Hands-On In
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ContentsPart III: Debugger Descript
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Running Title—Attribute Reference
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Key Features1.1 Key FeaturesThis se
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Memory1.3 MemoryThe ’C5x DSK is o
Page 20 and 21: MemoryFigure 1-3. DSK to RS-232 Con
Page 22 and 23: What You’ll Need2.1 What You’ll
Page 24 and 25: What You’ll NeedDSK module connec
Page 26 and 27: Step 2: Installing the DSK Software
Page 28 and 29: Step 4: Modifying the PATH Statemen
Page 30 and 31: Step 5: Verifying the InstallationI
Page 32 and 33: Description of the DSK Assembler3.1
Page 34 and 35: Developing Code for the DSK3.3 Deve
Page 36 and 37: Getting Started2) Enter the followi
Page 38 and 39: Getting Started5) Now you are ready
Page 40 and 41: Creating DSK Assembler Source Files
Page 46 and 47: Symbols4.3 SymbolsSymbols are used
Page 48 and 49: Assembling Your Program4.5 Assembli
Page 50 and 51: 4-12
Page 52 and 53: Using the DSK Assembler Directives5
Page 54 and 55: Directives That Define Sections5.2
Page 56 and 57: Directives That Reference Other Fil
Page 58 and 59: Directives That Initialize Memory5.
Page 60 and 61: Miscellaneous Directives5.6 Miscell
Page 62 and 63: .byte/.stringDirectives ReferenceSy
Page 64 and 65: .copy/.includeDirectives ReferenceL
Page 66 and 67: .endDirectives ReferenceSyntax.endD
Page 68 and 69: .float/.bfloat/.double/.efloat/.tfl
Page 72 and 73: .liston/.listoffDirectives Referenc
Page 74 and 75: .lqxx/.qxxDirectives ReferenceSynta
Page 76 and 77: .mmregsDirectives ReferenceTable 5-
Page 78 and 79: .setDirectives ReferenceSyntax symb
Page 80 and 81: .spaceDirectives ReferenceListing f
Page 82 and 83: .text / .psDirectives ReferenceExam
Page 84 and 85: 5-34
Page 86 and 87: Invoking the Debugger6.1 Invoking t
Page 88 and 89: Invoking the DebuggerSetting the co
Page 90 and 91: Using Pulldown Menus in the Debugge
Page 98 and 99: Using Dialog BoxesYou can omit entr
Page 100 and 101: Using Software Breakpoints6.4 Using
Page 102 and 103: Quick-Reference Guide6.5 Quick-Refe
Page 104 and 105: Quick-Reference GuideTable 6-14.Deb
Page 106 and 107: Circuit Board DimensionsFigure A-1.
Page 108 and 109: Schematic DiagramP1594837261CONNECT
Page 110 and 111: Schematic DiagramEODR\OUT-AUXIN-TCL
Page 112 and 113: GlossaryCWindows that show code, te
Page 114 and 115: GlossaryIIC:Integrated circuit. A t
Page 116 and 117: Glossarysingle step: A form of prog
Page 118 and 119: Indexconditional assembly, directiv
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IndexinitializingCPU registers 6-10
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IndexTtag, definition B-6temporary
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