TMS320C5x DSP STARTER KIT USER'S GUIDE
TMS320C5x DSP STARTER KIT USER'S GUIDE TMS320C5x DSP STARTER KIT USER'S GUIDE
Directives That Define Sections5.2 Directives That Define SectionsFive directives associate the various portions of an assembly languageprogram with the appropriate sections: The .data directive identifies portions of code to be placed in data memory.Data memory usually contains initialized data. The .ds directive functions like .data; however, with .ds you can specifyan optional address to initialize a new data address. The .entry directive identifies the starting address of the program counter.The current address is used by default, but you can specify an optional address. The .ps directive identifies portions of code to be placed in programmemory. With .ps you can specify an additional address to initialize a newprogram address. The .text directive identifies portions of code in the .text section. The .textsection usually contains executable code.Example 5–1 shows how you can use sections directives to associate code anddata with the proper sections. This is an output listing; column 1 shows line numbers,and column 2 shows the section program counter (SPC) values. (Eachsection has its own section program counter, or SPC. When code is first placedin a section, its SPC equals 0. When you resume assembling into a section, itsSPC resumes counting as if there had been no intervening code.After the code in Example 5–1 is assembled, the sections contain:.text Initialized bytes with the values 1, 2, 3, 4, 5, and 6.data Initialized bytes with the values 9, 10, 11, and 125-4
Directives That Define SectionsExample 5–1. Sections Directives00001 –––– –––– *********************************00002 –––– –––– * Initialize section addresses *00003 –––– –––– *********************************00004 –––– 0a00 .ps 0a00h00005 –––– 0e00 .ds 0e00h00006 –––– –––– *********************************00007 –––– –––– * Start assembling into .text *00008 –––– –––– *********************************00009 –––– –––– .text00010 0a00 0001 .byte 1,20a01 000200011 0a02 0003 .byte 3,40a03 000400012 –––– –––– *********************************00013 –––– –––– * Start assembling into .data *00014 –––– –––– *********************************00015 –––– –––– .data00016 0e00 0009 .byte 9,100e01 000a00017 0e02 000b .byte 11,120e03 000c00018 –––– –––– *********************************00019 –––– –––– * Resume assembling into .text *00020 –––– –––– *********************************00021 –––– –––– .text00022 0a04 0005 .byte 5,60a05 0006>>>>> FINISHED READING ALL FILES>>>>> ASSEMBLY COMPLETE: ERRORS:0 WARNINGS:0Note:You can use the .ps and .ds directives to assemble your code to the samememory locations. This won’t cause an assembly error; however, it is possibleto overwrite previously defined memory blocks.Assembler Directives5-5
- 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 42 and 43: Creating DSK Assembler Source Files
- Page 44 and 45: 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 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 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 92 and 93: Using Pulldown Menus in the Debugge
- Page 94 and 95: Using Pulldown Menus in the Debugge
- Page 96 and 97: 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
Directives That Define SectionsExample 5–1. Sections Directives00001 –––– –––– *********************************00002 –––– –––– * Initialize section addresses *00003 –––– –––– *********************************00004 –––– 0a00 .ps 0a00h00005 –––– 0e00 .ds 0e00h00006 –––– –––– *********************************00007 –––– –––– * Start assembling into .text *00008 –––– –––– *********************************00009 –––– –––– .text00010 0a00 0001 .byte 1,20a01 000200011 0a02 0003 .byte 3,40a03 000400012 –––– –––– *********************************00013 –––– –––– * Start assembling into .data *00014 –––– –––– *********************************00015 –––– –––– .data00016 0e00 0009 .byte 9,100e01 000a00017 0e02 000b .byte 11,120e03 000c00018 –––– –––– *********************************00019 –––– –––– * Resume assembling into .text *00020 –––– –––– *********************************00021 –––– –––– .text00022 0a04 0005 .byte 5,60a05 0006>>>>> FINISHED READING ALL FILES>>>>> ASSEMBLY COMPLETE: ERRORS:0 WARNINGS:0Note:You can use the .ps and .ds directives to assemble your code to the samememory locations. This won’t cause an assembly error; however, it is possibleto overwrite previously defined memory blocks.Assembler Directives5-5
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