Intel 9800758-02 4"4;0"1"

Introduction

to

BASIC-80

1-4

Loading

a

Program

The LOAD command loads a

BASIC-SO

program from disk. The program can be

stored in either ASCII

or

internal format.

To

load a program named ANL YZE from

a disk in drive

1:

LOAD ":F1 :ANLYZE"

OK

You can now run, list, or edit the program.

Saving

a Program

The SAVE command copies your program from Intellec memory to disk. You must

specify a filename, enclosed in quotation marks:

SAVE ":F1 :ANLYZ"

The SAVE command can also be used to list the contents

of

the current file on a line

printer or other output device. For example, to list the current file on a line printer,

you would enter:

SAVE

":LP:"

,A

4"4;0"1"

You can only write data to one disk in any disk drive each time you invoke

BASIC.

If

you write to a disk in a given drive, remove that disk and insert

another, and try to write to the new disk, you lose all data on the

new

disk.

The exception to this

is

on systems with more than one drive.

It

is

permissi-

ble to change a disk on a drive if that drive has not been written to since

another drive has been written to.

As

an example, if your

BASIC-SO

pro-

gram writes

on

a file in drive 0, and you then remove that disk, insert

another and write on it, the contents

of

that second disk

will

be lost.

If,

however, your program wrote on a disk in drive 1 between writing on the

different disks in drive 0, there would be no problem.

There are no restrictions on reading from disks.

BASIC-80

Contents

Main BASIC-SO REFERENCE MANUAL r I ii PREFACE Page CHAPTER! CHAPTER AND APPENDIX CONTENTS 4 RMX/80 HANDLING 5 ILLUSTRATIONS TABLES CHAPTER 1 INTRODUCTION TO BASIC-80 Operating System Interface Invoking BASIC-80 Examples Manipulating Files from BASIC-SO Listing the Directory of "filename", to a Disk 4"4;0"1" CHAPTER 2 LANGUAGE ELEMENTS Instructions Commands Statements Language Elements BASIC-80 Table 2-1. BASIC-80 Commands 2-2 (Cont'd.) Table 2-2. BASIC-80 Statements BASIC-SO Table 2-2. BASIC-80 Statements Language Elements = (Cont'd.) Table 2-3. BASIC-80 Functions Table 2-3. BASIC-80 Functions (Cont'd.) Returns Example Functions Representing Data Syntax Numeric Data Constants o. Integer Constants Decimal Integer Constants Hexadecimal Integer Constants Octal Integer Constants Variables AI String Data String Constants String Variables Converting Data l4! (l4) Array Variables Y(I,1) String Arrays 8. If of Order Operators and Precedence of Evaluation Arithmetic Operators Relational Operators Logical Operators String Operator Expressions Numeric Expressions String Expressions CHAPTER 3 ENTERING AND EDITING PROGRAMS Entering Instruction Lines Correcting Entry Errors Editing Program Text D Subcommand [integer] D L Subcommand I Subcommand H Subcommand X Subcommand S Subcommand K Subcommand C Subcommand Q Subcommand Carriage A Subcommand 40. CHAPTER 4 ERROR HANDLING + = Error Error Trapping ? ? 3 -3 Trace Facility Error Simulation B = A Restarting Program Execution CHAPTER 5 DISK FILE INPUT/OUTPUT Sequential File 1/0 Opening a Sequential File Writing to a Sequential File Reading from a Sequential File Closing a Sequential File Random File I/O Defining a Random 110 Buffers FILE "rMBER 3 Opening and Closing a Random Disk File Reading from a Random File ="; 1/0 Writing to a Random File = ATTRIB CHAPTER 6 COMMANDS J[, ":Fdrive AND STATEMENTS "W1" CLOSE [,[1] CONT DATA I I DEF FN(X) DEFSNG DEFDBL DEFSTR DEFINT DEFUSRn =" "; = DIM DIR O. will + ";8;" EXIT FIELD 110 number of characters AS string variable [,number of characters AS string variable] ... FOR-NEXT-STEP GET [I] file number [,record number] GOSUB line number IF-THEN-ELSE ? INPUT Ok KILL LET LINE INPUT LIST LOAD LSET, RSET = 10 CO MERGE NEW NEXT NULL ERROR ON GOTO ON ... GOSUB ON ... "#" GOTO OPEN OPTION BASE OUT POKE PRINT [II "!"; I;] ... PRINT USING Numeric fields tttt PRUN PUT RANDOMIZE >= READ REM B+C)/3 RENAME RENUM A RESUME RETURN A=11 220 RUN numberlstring RUN IN BREAK TRON, STOP SWAP TROFF WAIT WIDTH ABS CHAPTER 7 FUNCTIONS ?5 Ase ATN ?5 COBl 10 CHR$ A#=1/3 CINT cos 10 1 2 3 AO/o .1666667 ERL 1/0 ERR X/Y <> EXP ? Ok FRE HEXS INP "1", = INPUTS INT ? ? LEFT$ = LEN LOC LOF LOG MID$ [,J]) = MKI$ MKS$ MKD$ OCT$ PEEK P~S RIGHTS = RND o SIN ?8 SPACES NOTE saR STRINGS OK STR$ = TAB 1 TAN 4 USRn VAL VARPTR APPENDIX A BASIC-SO ERROR CODES A-I Error BASIC-80 < Table O. 0, Error APPENDIX B BASIC-SO RESERVED WORDS Page APPENDIX C BASIC-80 COMMAND CHARACTERS Page D-l. * = > Table < Table D-2. ASCII D-2 FS Codes BASIC-SO Code APPENDIXE CALLING NON-BAStC-SO SUBROUTINES Preparing Subroutines NOTE Calling Subroutines ~~D~ESS ILS_f_I~~I Numbers and Strings of Figure B-1. Internal Representation Some Real Examples BASIC-SO Calling Non-BASIC-SO Subroutines E9 E-5 EXTERNAL o E.H o Figure E-2. 8080/8085 Assembly Language Program Calling a Non-BASIC-SO BASIC-SO Program Figure E-4. FORTRAN-80 APPENDIX F RMX/SO BASIC-SO RMX/80 is What Initializing the SO/30 Predefined RMX/SO BASIC-SO Configuration Single Board Computer Hardware Reference Manual, chapter 2. Table F-l. Reference Manual for details). The supplied cable attaches from iSBC RAM RMX/SO RMX/80 Generating for Software Requirements Generating a Boot-Loaded RMX/80 BQOPS.ASM BASIC-80 CPU BOOTED CONTR UIO HIRAM BOTMEM PROM Programming Manual for details) User's Guide for further information.) RMX/80 Generating a PROM-Based Reference Manual shows one way to RMX/80 BASIC-80 o Configuring PROM-Based With or Without DFS. iSBC An o Page Configuring on an iSBC an Adding BASIC-SO to DFS Public Variables and Linking 13,10,26 Adding RMX/SO to Programs BASIC-SO Adding USR BASIC-SO Adding liD Drivers to I/O User-Written Figure F-S. Sample User-Written F-15 RMX/80 1/0 BASIC-SO Altering BASIC-80 Workspace Burning a BASIC-80 Program Into PROM PROM Program- mer Reference Manual, 9800133F. PROM Universal Mapper Operator's Manual, 9S00236A. Page INDEX Index BASIC-SO Ase, 110 # REQUEST COMMENTS READER'S FOR BUSIN ESS REPLY NO U.S.A. IN MAIL Page INTEL