Contents | Intel 9800758-02 manual

CONTENTS

CHAPTER!	PAGE
INTRODUCTION TO BASIC-SO
Operating System Interface	. .. 1-1
Invoking BASIC-80	1-1
Manipulating Files from BASIC-80	.. 1-2
Listing the Directory of a Disk	.. 1-3
Renaming a File	.. 1-3
Changing File Attributes	.. 1-3
Deleting a File	.. 1-3
Loading a Program	. .. 1-4
Saving a Program	. .. 1-4

CHAPTER 2

LANGUAGE ELEMENTS

Instructions	2-1
Commands	2-1
Statements	2-1
Functions	2-5
Representing Data	2-5
Syntax	2-5
Numeric Data	2-5
Constants	2-6
Integer Constants	2-6
Decimal Integer Constants	2-6
Hexadecimal Integer Constants	2-6
Octal Integer Constants	2-7
Single-Precision Floating-Point Constants	2-7
Double-Precision Floating-Point Constants	2-7
Variables	2-7
String Data	2-8
String Constants	2-8
String Variables	2-8
Converting Data	2-9
Array Variables	2-9
String Arrays	2-10
Operators and Precedence of Evaluation	2-11
Arithmetic Operators	2-11
Relational Operators	2-11
Logical Operators	2-12
String Operator	2-12
Expressions	2-12
Numeric Expressions	2-12
String Expressions	2-12

CHAPTER 3

ENTERING AND EDITING PROGRAMS

Entering Instruction Lines	3-1
Correcting Entry Errors	3-1
Editing Program Text	3-2
D Subcommand	3-3
L Subcommand	3-4
I Subcommand	3-4
H Subcommand	3-4
X Subcommand	3-4
S Subcommand	3-5
K Subcommand	3-5
C Subcommand	3-6
Q Subcommand	3-6

	PAGE
A Subcommand	. .. 3-6
E Subcommand	. .. 3-6
Carriage Return	. .. 3-6

CHAPTER 4

ERROR HANDLING

BASIC-80 Error Messages	4-1
Syntax Error Messages	4-1
Overflow, Underflow, and Divide-by-Zero	4-1
Overflow	4-1
Underflow	4-2
Divide-by-Zero	4-2
Integer Operations	4-2
Error Trapping	4-2
Trace Facility	4-3
Error Simulation	4-4
Restarting Program Execution	4-4

CHAPTER 5

DISK FILE INPUTIOUTPUT

Sequential File I/O	5-1
Opening a Sequential File	5-1
Writing to a Sequential File	5-2
Reading from a Sequential File	5-2
Closing a Sequential File	5-3
Random File I/O	5-4
I/O Buffers	5-4
Defining a Random I/O Field-FIELD	5-4
Opening and Closing a Random Disk File	5-6
Reading from a Random I/O File	5-6
Writing to a Random I/O File	5-7

CHAPTER 6

COMMANDS AND STATEMENTS

CHAPTER 7

FUNCTIONS

APPENDIX A

BASIC-SO ERROR CODES

APPENDIXB

BASIC-SO RESERVED WORDS

APPENDIXC

BASIC-SO COMMAND CHARACTERS

APPENDIXD

ASCII CODES

APPENDIXE

CALLING NON-BASIC-SO SUBROUTINES

APPENDIXF

RMX/80 BASIC-80

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Intel 9800758-02 manual Contents

Contents

BASIC-SO Reference Manual A108/0979/7500 FL Preface Page Contents Illustrations Invoking BASIC-80 Chapter Introduction to BASIC-80 Introduction to BASIC-80 ExamplesBasic filename MEMTOPaddress Filename Renaming a File Listing the Directory of a DiskChanging File Attributes Deleting a File Save LP ,A You can now run, list, or edit the program Statements Commands BASIC-80 Statements BASIC-80 Commands Contd BASIC-80 Functions BASIC-80 Statements Contd BASIC-80 Functions Contd Functions Representing Data Integer Constants ConstantsDecimal Integer Constants Hexadecimal Integer Constants Double-Precision Floating-Point Constants Octal Integer ConstantsSingle-Precision Floating-Point Constants String Variables String ConstantsThis is a string constant $ = Enter next data string YI,1 L4! = Csng l4 String Arrays BASIC-SO Operators in Order of Precedence Contd Arithmetic Operators String Operator Logical OperatorsNumeric Expressions String Expressions Entering and Editing Programs 30 A=8 30 A=8*5230 A=8*52 30 A=8*37 30 A--=8xx*522537 Control-R a = 8*37 Command 3D press 3, then D results SubcommandInteger D If AB then If AB then 120 Else Null SET At this point, the other editing subcommands may be used Syntax of the X subcommand is Integer C character character Print Undefined SET The E subcommand is enteredMove the cursor to PRINT. Enter 2C RE L Print Undefined SET. Enter a L Overflow, Underflow, and Divide-by-Zero BASIC-80 Error MessagesSyntax Error Messages Error Trapping Trace Facility Error Handling Error SimulationRestarting Program Execution If line 40 is replaced with Open 1,#1,F1DATES Opening a Sequential File Writing to a Sequential File Refer to for further details of Print UsingReading from a Sequential File If executed four times, it would read all eight values Value of R$ would be Closing a Sequential File Field #3, 20 AS N$ BuffersDefining a Random 1/0 Field-FIELD Field #3, 20 AS N$, 9 AS SS$ Disk File Input/Output Reading from a Random 1/0 File Opening and Closing a Random Disk FileAny of the parameters can be variables To read the next record Integer Writing to a Random 1/0 FileSingle-precision value Double-precision value MKI$ Attrib Fdrive numberfilename, WO Attrib Fdrive numberfilename, W1Auto first lineJ, increment Clear expression,address Close Commands and Statements Rules for function name are the same as for variable name DEF FNX Defsng Defdbl Defstr Defint Delete DIM DIR ErrorEdit END Exit Error expressionField FOR-NEXT-STEP Gosub GETFor variable=expression to expression Step expression GET I file number ,record number Goto IF-THEN-ELSEInput LET KillLine Input List Load LSET, Rset NEW Merge 9 16 Next Open On ... GosubOn ... Goto Poke Option BaseOUT String Fields Print UsingPrint If X$=SEVEN and Y$=EIGHT, the results of line 40 would be Numeric fields PUT Prun Read Randomize REM Return Resume RUN line numberlstring expression ,F SaveLine number RUN filename 60 END ? 5,8,2 TRON, Troff Width Wait ATN ABS Functions CHR$Cint CVI CVS Csng10 A# = 1.00/3.00 AO/o = EOF Dskf Ok· FIX Inputs HexsINP LEFT$ INTInstr LOC LENLOF LOG OCT$ MID$MKI$ MKS$ MKD$ Peek expression RightsPOS integer RIGHT$ string,integer SIN SGNSpaces 10 a =1 SPC integer SPCIf A$ = 2 then Print Correct Else Goto SQRexpression TAN expression STR$ expressionTAB expression 60 AO/o = Here is an example of how the USRn statement is used Table A-I. BASIC-80 Error Codes Appendix a BASIC-SO Error Codes Table A-I. BASIC-SO Error Codes Contd Appendix B BASIC-SO Reserved Words Page Level To halt program execution and return to commandTo tab across the line To resume program execution after it is stopped byPage Appendix D Ascii Codes Table D-l. Ascii Code List BEL Table D-2. Ascii Code Definition Appendixe Calling Subroutines Figure B-1. Internal Representation of Numbers and Strings RESULT=USR%1VARPTRA, VARPTRB, VARPTRC» PRINTA+B+C= Result Some Real Examples Figure E-2 /8085 Assembly Language Program Figure E-3. PL/M-80 Program Appendix F RMX/SO BASIC-SO ISIS-II BASIC-SO Initializing the Predefined RMX/SO BASIC-SO Configuration OOOOH-OFFFH Table F-l. Sample Configuration Jumper Wiring BASIC-80 Source Files Generating Boot-Loaded and PROM-Based VersionsBASIC-80 Object Files BASIC-80 Executable Files Generating a Boot-Loaded RMX/80 BASIC-80 This option is used to allocate memory. It is 1 if the boot That are not boot loadedSetting baud rates, refer to the RMX/SO Users Guide This option enables your user-written I/O drivers if you ISBC 80/20-4 Generating a PROM-Based RMX/80 BASIC-80 Prom F1 RMX820.L1BSTART, & FOBASCM.OBJ,& FORMXBAS.LlB F1 DFSDIR. L1BDIRECTORY ,RENAM E,& F1 MTI810.L1B Adding BASIC-SO to an Existing RMX/SO Configuration Configuring DFS on an iSBC 80/10Configuration Requirements ISBC SO/10 System Clock Public Variables Open 0,#1, L1LlST Adding User-Written I/O Drivers to RMX/SO BASIC-SO Figure F-S. Sample User-Written 1/0 Driver Routine Burning a BASIC-80 Program Into Prom Altering BASIC-80 Workspace Baprom F1HEATER.BAS Page Index Ase BASIC-80 RIGHT$,7-1O Request for Readerscomments 111111