TOPS-20 PASCAL Language Manual - Bitsavers

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USTNG PASCAL ON TOPS-20 Example 3 frl LOAD PLAN ICOMF'I LE / Cf~LF @PFUNT PLAN. L.S"J (~ !:)TAJ:~T The LOAD command first compiles the program because of the /COMPILE switch, then, if compilation js successful, loads the program. The /CREF switch generates a listing file with c ross- refe renee information. The PRINT command prints the listing. The program is then executed with the START command. 8-18
CHAPTER 9 PASDDT: THE PASCAL-20 DEBUGGER The PASCAL-20 debugger, P~SDDT, provides the means to monitor and modify the execution of a PASCAL program. PASDDT provides symbolic debugging capabilities that allow you to read and modify the values associated with variables by referring to the PASCAL identifiers within your program. 9.1 RUNNING PASDDT To use the debugger, you must program. First, compile the switch in the command string: compile and load PASDDT with the source program and include the /DEBUG @PASCAL PASCAL>filename/DEBUG PASCAL>/EXIT @ Then, load the program along with PASDDT by specifying the DEBUG command: @DEBUG filename The DEBUG command loads and starts the program with the debugger, PASDDT. currently in memory, If you want more control over where the debugger is placed, or you have the need for more options, you can use the TOPS-20 LINK program directly. Refer to the LINK Reference Manual for TOPS-20 information. When running PASDDT, the source file with the extension PAS should be located in the same directory as the EXE version of the file. This should also be the directory to which you are connected when running PASDDT. If you have specified a file with the %INCLUDE directive, PASDDT looks for a file with the same name. 9.2 USING SYMBOLIC VALUES Symbolic values are the identifiers defined within the source program. PASDDT allows access to identifiers available only in the current scope, and performs recognition on these identifiers. You can specify a location in the source code by using the line number shown in the listing file created when the program is compiled. See Section 8.4.7. 9-1
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TOPS-20 PASCAL Language Manual AA-L
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CONTENTS PREFACE CHAPTER 1 INTRODUC
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7 • 1 . 1 7 . 1 . 2 7 • 1 . 3 7
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G-l G-2 G-3 G-4 Status of Stack Aft
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• Appendix A lists the various me
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CHAPTER I INTRODUCTION PASCAL-20 is
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PROGRAM Calculator (INPUT, OUTPUT);
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INTRODUCTION 1.1.6 Compilation Unit
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INTRODUCTION 1.2.3 Identifiers PASC
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INTRODUCTION The semicolon and the
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INTRODUCTION In the following examp
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CHAPTER 2 PASCAL DATA TYPES This ch
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PASCAL DATA TYPES In addition to de
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PASCAL DATA TYPES You can use strin
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PASCAL DATA TYPES The base type can
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PASCAL DATA TYPES is BOOLEAN, then
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PASCAL DATA TYPES In the three-dime
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PASCAL DATA TYPES To assign values
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PASCAL DATA TYPES 2.3.1.5 Array Exa
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PASCAL DATA TYPES The fields in thi
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PASCAL DATA TYPES 2.3.2.2 Assigning
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PASCAL DATA TYPES For example, assu
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PASCAL DATA TYPES Sets are compatib
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PASCAL DATA TYPES Example 3 F I 1..
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PASCAL DATA TYPES Pointer type defi
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PASCAL DATA TYPES Example 2 VAR Cit
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EXPRESSIONS Table 3-1: Arithmetic O
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EXPRESSIONS TabJe 1-2: Result Types
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EXPRESSIONS The set operators (+, *
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EXPRESSIONS PROGRAM Level_.O (IN PU
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CHAPTEH 4 PROGRAM HEADING AND DECLA
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PROGRAM HEADING AND DECLARATION SEC
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PASCAL STATEMENTS Simple and compou
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PASCAL STATEMENTS Example q Ase~5 :
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PASCAL STATEMENTS The objects of th
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PASCAL STATEMENTS Example 1 CASE EN
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PASCAL STATE~ENTS Example 4 := 1 TO
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PASC~L STATEMENTS 5.5 THE WITH STAT
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PASCAL STATEMENTS Example FOR I :=
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CHAPTER ~ PROCEDURES AND FUNCTIONS
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PROCEDURES AND FUNCTIONS Table ~-l:
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PROCEDURES AND FUNCTIONS Table ~-1:
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PROCEDURES AND FUNCTIONS This progr
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PROCEDURES AND FUNCTIONS You can al
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PROCEDURES AND FUNCTIONS This progr
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PROCEDURES AND FUNCTIONS Boolean fu
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PROCEDURES AND FUNCTIONS Table h-3:
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PROCEDURES AND FUNCTIONS Data items
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PROCEDURES AND FUNCTIONS The actual
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PROCEDURES AND FUNCTIONS An optiona
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PROCEDURES AND FUNCTIONS Example 1
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PROCEDURES AND FUNCTIONS Fo rma t 1
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PROCEDURES AND FUNCTIONS As a resul
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PROCEDURES AND FUNCTIONS label sect
Page 123 and 124: PROCEDURES AND FUNCTIONS The functi
Page 125 and 126: PROCEDURES AND FUNrTIONS Example 1
Page 127 and 128: CHAPTER 7 INPUT AND OUTPUT This cha
Page 129 and 130: INPUT AND OUTPUT In executing this
Page 131 and 132: INPUT AND OUTPUT where: file variab
Page 133 and 134: INPUT AND OUTPUT When you reach the
Page 135 and 136: INPUT AND OUTPUT To specify only th
Page 137 and 138: INPUT AND OUTPUT 7.7.4 Record Type
Page 139 and 140: INPUT AND OUTPUT This example cause
Page 141 and 142: INPUT AND OUTPUT 7.9 THE PUT PROCED
Page 143 and 144: INPUT AND OUTPUT READ does not read
Page 145 and 146: INPUT AND OUTPUT This program fragm
Page 147 and 148: INPUT AND OUTPUT You must call REWR
Page 149 and 150: INPUT AND OUTPUT The following rule
Page 151 and 152: INPUT AND OUTPUT This example write
Page 153 and 154: INPUT l\ND OUTPUT Example 1 BEGIN W
Page 155: INPUT AND OUTPUT The first referenc
Page 158 and 159: USING PASCAL ON TOPS-20 8.2 FILE SP
Page 160 and 161: USING PASCAL ON TOPS-20 After plann
Page 162 and 163: USING P~SCAL ON TOPS-20 /TAKE The /
Page 164 and 165: USING PASCAL ON TOPS-20 If you omit
Page 166 and 167: USING PASCAL ON TOPS-20 The first c
Page 168 and 169: • AVERAGE SCORE SOURCE LISTING o
Page 170 and 171: USING PASCAL ON TOPS-20 The compile
Page 172 and 173: USING PASCAL ON TOPS-20 8.4.6.3 Cro
Page 176 and 177: PASDDT: THE PASCAL-20 DEBUGGER 9.3
Page 178 and 179: PASDDT: THE PASCAL-?O DEBUGGER cons
Page 180 and 181: PASDDT: THE PASCAL-20 DEBUGGER As s
Page 182 and 183: PASDDT: THE PASCAL-20 DEBUGGER Note
Page 186 and 187: PASDDT: THE PAS~AL-20 DEBUGGER ]. T
Page 190 and 191: P~SDDT: THE PASCAL-?O DEBUGGER To r
Page 193 and 194: ._------------- Table A-I: Run-time
Page 195 and 196: PASCAL MESSAGES -------------------
Page 197 and 198: PASCAL MESSAGES ? PASOl7 "BEGIN" ex
Page 199 and 200: PASCAL MESSAGES ? PASIOS Sign not a
Page 201 and 202: PASCAL MESSAGES ? PAS130 Expression
Page 203 and 204: PASCAL MESSAGES ? PAS157 Case label
Page 205 and 206: PASCAL MESSAGES ? PAS184 External p
Page 207 and 208: PASCAL MESSAGES ? PAS?II Incorrect
Page 209 and 210: PASCAL MESSAGES ? PAS253 Too many a
Page 211: PASCAL MESSAGES % PAS457 Nonstandar
Page 214 and 215: ASCII CHARACTER SET Table 8-1: The
Page 217 and 218: APPENDIX C SYNTAX SUMMARY This appe
Page 219 and 220: SYNTAX Sm1MARY ::= I I I I
Page 221 and 222: SYNTAX Sur~MARY ::= := ::= I
Page 223 and 224: SYNTAX SU~1MARY ::= ft ::= ::=
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SYNTAX SUr-1MARY ""= ::= ,
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-------- ---- ---- ----------------
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ISO COMPLIANCE 4. A program paramet
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ISO CO~PLIANCE The DISPOSE procedur
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ISO COMPLIANCE In the UNPACK(z,i. ,
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ISO COMPLIANCE In a FOR statement,
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APPENDIX F DIFFERENCES BETWEEN PASC
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DIFFERENCES BETWEEN PASCAL-20 AND V
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APPENDIX G PROCEDURE AND FUNCTION C
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PROCEDURE AND FUNCTION CALLING SEQU
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PROCEDURE ~ND FUNCTION CALLING SEQU
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INDEX /ABORT switch, 8-7 ABS functi
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Function (Cont.) EOF, 1-7, 6-14 EOL
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INDEX (Co n t. ) Set operator, 1-8,
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- Do Not Tear - Fold Here and Tape
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