TMS320C5x DSP STARTER KIT USER'S GUIDE

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.float/.bfloat/.double/.efloat/.tfloatDirectives ReferenceSyntax .float value [,..., value n ].bfloat value [,..., value n ].double value [,..., value n ].efloat value [,..., value n ].tfloat value [,..., value n ]DescriptionThe .float directive places the floating-point representation of a single floating-pointconstant into two words in the current section. value must be a floating-pointconstant. Each constant is converted to a floating-point value in 32-bit IEEEfloating-point format.The IEEE floating-point format consists of three fields: A 1-bit sign field (s) An 8-bit biased exponent (exponent) A 23-bit normalized mantissa (mantissa)15 14 7 6 0s exponent mantissa15 0mantissa.bfloat.efloatThe .bfloat directive format is slightly different in that it has a 16-bit exponentand both a high and low mantissa:15 0exponent15 0mantissa (high)15 0mantissa (low)ExampleHere is an example of floating-point directives.Source file:.ds0400h.bfloat 1.5,3,6.bfloat –1.5,3,6.efloat 1.5,3,6.end5-18
Directives Reference.float/.bfloat/.double/.efloat/.tfloatListing file:00001 –––– 0400 .ds 0400h00002 0400 0000 .bfloat 1,5,3,60401 60000402 00000403 00000404 60000405 00010406 00000407 60000408 000200003 0409 0000 .bfloat –1,5,3,6040a a000040b 0000040c 0000040d 6000040e 0001040f 00000410 60000411 000200004 0412 6000 .efloat 1,5,3,60413 00000414 60000415 00010416 60000417 000200005 –––– –––– .end>>>>> LINE:5 .END ENCOUNTERED>>>>> FINISHED READING ALL FILES>>>>> ASSEMBLY COMPLETE: ERRORS:0 WARNINGS:0Assembler Directives5-19
Page 1 and 2:
TMS320C5xDSP Starter KitUser’s Gu
Page 3 and 4:
PrefaceRead This FirstAbout This Ma
Page 5 and 6:
Notational Conventions / Informatio
Page 7 and 8:
If You Need AssistanceIf You Need A
Page 9 and 10:
ContentsContentsPart I: Hands-On In
Page 11:
ContentsPart III: Debugger Descript
Page 14 and 15:
Running Title—Attribute Reference
Page 16 and 17:
Key Features1.1 Key FeaturesThis se
Page 18 and 19: 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 70 and 71: .if/.else/.endifDirectives Referenc
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
Page 120 and 121:
IndexinitializingCPU registers 6-10
Page 122 and 123:
IndexTtag, definition B-6temporary
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TMS320C5x DSP STARTER KIT USER'S GUIDE

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