TOPS-20 PASCAL Language Manual - Bitsavers

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9.4.8 9.4.9 9.4.10 9.4.11 REMOVE • SET SHOW • • TRACE 9-11 9-11 9-14 9-15 APPENDIX A PASCAL .MESSAGES APPENDIX B ASCII CHARACTER SET APPENDIX C SYNTAX SUMMARY C.l BACKUS-NAUR FORM . . • . • • • . • • • • • • • • • C-l APPENDIX D SUMMARY OF PASCAL-20 EXTENSIONS TO PROPOSED ISO STANDARD APPENDIX E ISO COMPLIANCE E.l E.2 E.3 E.4 IMPLEMENTATION-DEFINED FEATURES IMPLEMENTATION-DEPENDENT FEATURES ERROR HANDLING . . • . • . • EXCEPTIONS AND RESTRICTIONS • • • • E-l • • E-3 • • • • • E- 3 • • • • • E-8 APPENDIX F DIFFERENCES BETWEEN PASCAL-20 AND VAX-II PASCAL APPENDIX G G.l G.2 G.3 G.l.1 G.3.2 G.3.3 G.3.4 G.l.5 G.4 G.t) PROCEDURE AND FUNCTION CALLING SEQUENCES RUN-TIME STACK . . • • • . • . . • • • • . • G-l MECHANICS OF A PROCEDURE CALL • • G-2 PARAMETER PASSING Value Parameter Passed By Value ••.. • • • G- G-3 3 Value Parameter Passed By Address · G-3 Reference (VAR) Parameter .•.• • • • • • G-4 Procedure Or Function Parameter • • • • • G-4 Conformant Array Parameter. • • • • • • G-4 PARAMETER ACCESSING EXAMPLE • G-5 CONFORMANT ARRAY EXAMPLE • . • • • • • • • • • G- 5 INDEX Index-l FIGURES FIGURE 1-1 1-2 2-1 2-2 2-3 3-1 4-1 7-1 7-2 8-1 9-1 Structure of a PASCAL Program %TNCLUDE File Levels •..... Two-DimensionaJ Array Two D Three-Dimensional Array ChesslD Storing Components in an Array Scope of Identifiers •....•. PASCAL Data Types ..•• File Position After GET ...• File position after RESET Compiler Listing Format ..•.•. Scope . . . . . • . . . . . . . . • • • 1-3 1-12 · . . . . 2-9 2-10 2-11 • • • 1-8 · 4-5 · 7-6 7-19 8-12 · . • • . 9-2 vi
G-l G-2 G-3 G-4 Status of Stack After PUSHJ Stack Frame •.•..... External Proce~ure Declaration . Conformant Array Parameter ... · G-1 • • G-2 · • G-5 · G-6 TABLES TABLE 1-1 1-2 1-3 3-1 3-2 3-3 3-4 3-5 3-6 6-1 6-2 f)-3 7-1 7-2 7-3 7-4 8-1 8-2 8-3 8-4 A-I A-2 B-1 C-l F-I F-2 Feserved Words •....• · • I-f) Predeclared Identifiers • • 1-7 Special Symbols •. . . • • • • • . . 1-8 Arithmetic Operators ... • • • • . • 1-2 Result Types for Arithmetic Expressions · 1-3 Relational Operators . · 1-4 Logical Operators • • 3-5 t:e tOpe ra to rs · • • • • 3- 5 Precedence of Operators · 3-6 Predeclared Procedures. • fi-2 Predeclared Functions f)-13 Library Routines • fi-17 Default Values for TOPS-20 External File Specifications ••••.• Summary of File Attributes Default Values for Field Width . Carriage-Control Characters File Specification Defaults PASCAL Compiler Commands •..•.• • 7-9 · • • • 7 -12 · . • . 7-22 · • • • • 7 -26 · 8-3 · • 8-5 PASCAL Compiler Switches. · • • • • • 8-7 Source Switches .••.• • • • • • • • • 8 -10 Run-time Errors .•..•••• · A-I I/O Errors •.•.••. A-2 The ASCII Character Set • • • • • • • • • • B-1 BNF MetaSymbols ••• . • . . . . C-l Additional Language Elements • • • • • • • F- 2 Additional Predeclared Functions • • • • • • • F- 4 vi i
Page 1 and 2: TOPS-20 PASCAL Language Manual AA-L
Page 3 and 4: CONTENTS PREFACE CHAPTER 1 INTRODUC
Page 5: 7 • 1 . 1 7 . 1 . 2 7 • 1 . 3 7
Page 10 and 11: • Appendix A lists the various me
Page 13 and 14: CHAPTER I INTRODUCTION PASCAL-20 is
Page 15 and 16: PROGRAM Calculator (INPUT, OUTPUT);
Page 17 and 18: INTRODUCTION 1.1.6 Compilation Unit
Page 19 and 20: INTRODUCTION 1.2.3 Identifiers PASC
Page 21 and 22: INTRODUCTION The semicolon and the
Page 23 and 24: INTRODUCTION In the following examp
Page 25 and 26: CHAPTER 2 PASCAL DATA TYPES This ch
Page 27 and 28: PASCAL DATA TYPES In addition to de
Page 29 and 30: PASCAL DATA TYPES You can use strin
Page 31 and 32: PASCAL DATA TYPES The base type can
Page 33 and 34: PASCAL DATA TYPES is BOOLEAN, then
Page 35 and 36: PASCAL DATA TYPES In the three-dime
Page 37 and 38: PASCAL DATA TYPES To assign values
Page 39 and 40: PASCAL DATA TYPES 2.3.1.5 Array Exa
Page 41 and 42: PASCAL DATA TYPES The fields in thi
Page 43 and 44: PASCAL DATA TYPES 2.3.2.2 Assigning
Page 45 and 46: PASCAL DATA TYPES For example, assu
Page 47 and 48: PASCAL DATA TYPES Sets are compatib
Page 49 and 50: PASCAL DATA TYPES Example 3 F I 1..
Page 51 and 52: PASCAL DATA TYPES Pointer type defi
Page 53: PASCAL DATA TYPES Example 2 VAR Cit
Page 56 and 57:
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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Page 71:
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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
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PROCEDURES AND FUNCTIONS The functi
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PROCEDURES AND FUNrTIONS Example 1
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CHAPTER 7 INPUT AND OUTPUT This cha
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INPUT AND OUTPUT In executing this
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INPUT AND OUTPUT where: file variab
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INPUT AND OUTPUT When you reach the
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INPUT AND OUTPUT To specify only th
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INPUT AND OUTPUT 7.7.4 Record Type
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INPUT AND OUTPUT This example cause
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INPUT AND OUTPUT 7.9 THE PUT PROCED
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INPUT AND OUTPUT READ does not read
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INPUT AND OUTPUT This program fragm
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INPUT AND OUTPUT You must call REWR
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INPUT AND OUTPUT The following rule
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INPUT AND OUTPUT This example write
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INPUT l\ND OUTPUT Example 1 BEGIN W
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INPUT AND OUTPUT The first referenc
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USING PASCAL ON TOPS-20 8.2 FILE SP
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USING PASCAL ON TOPS-20 After plann
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USING P~SCAL ON TOPS-20 /TAKE The /
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USING PASCAL ON TOPS-20 If you omit
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USING PASCAL ON TOPS-20 The first c
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• AVERAGE SCORE SOURCE LISTING o
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USING PASCAL ON TOPS-20 The compile
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USING PASCAL ON TOPS-20 8.4.6.3 Cro
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USTNG PASCAL ON TOPS-20 Example 3 f
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PASDDT: THE PASCAL-20 DEBUGGER 9.3
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PASDDT: THE PASCAL-?O DEBUGGER cons
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PASDDT: THE PASCAL-20 DEBUGGER As s
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PASDDT: THE PASCAL-20 DEBUGGER Note
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PASDDT: THE PAS~AL-20 DEBUGGER ]. T
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P~SDDT: THE PASCAL-?O DEBUGGER To r
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._------------- Table A-I: Run-time
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PASCAL MESSAGES -------------------
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PASCAL MESSAGES ? PASOl7 "BEGIN" ex
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PASCAL MESSAGES ? PASIOS Sign not a
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PASCAL MESSAGES ? PAS130 Expression
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PASCAL MESSAGES ? PAS157 Case label
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PASCAL MESSAGES ? PAS184 External p
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PASCAL MESSAGES ? PAS?II Incorrect
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PASCAL MESSAGES ? PAS253 Too many a
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PASCAL MESSAGES % PAS457 Nonstandar
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ASCII CHARACTER SET Table 8-1: The
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APPENDIX C SYNTAX SUMMARY This appe
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SYNTAX Sm1MARY ::= I I I I
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SYNTAX Sur~MARY ::= := ::= I
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SYNTAX SU~1MARY ::= ft ::= ::=
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SYNTAX SUr-1MARY ""= ::= ,
Page 228 and 229:
-------- ---- ---- ----------------
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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
Page 241 and 242:
DIFFERENCES BETWEEN PASCAL-20 AND V
Page 243 and 244:
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
Page 253:
INDEX (Co n t. ) Set operator, 1-8,
Page 256:
- Do Not Tear - Fold Here and Tape
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