Turbo Basic

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Table F-3 Keyboard Scan CodesKey Scan Code in Hex Key Scan Code in HexEsc 01 Left/Right arrow OF!I 02 Q 10@2 03 W 11#3 04 E 12$4 05 R 13o/oS 06 T 14A6 07 y 15&7 08 U 16*S 09 I 17(9 OA 0 18)0 OB P 19- - OC {[ lA+= OD }] IBBackspace OE Enter lCCtrl ID 1\ 2BA IE Z 2CS IF X 2DD 20 C 2EF 21 V 2FG 22 B 30H 23 N 31) 24 M 32K 25 . 34., 27 7/ 3528 RightShift 3629 PrtScr* 37LeftShift 2A Alt 38Spacebar 39 7Home 47Caps Lock 3A SUp arrow 48FI 3B 9PgUp 49F2 3C 4AF3 3D 4Left arrow 4BF4 3E 5 4CF5 3F 6Right arrow 4DF6 40 + 4EF7 41 lEnd 4FFS 42 2Down arrow 50F9 43 3PgDn 51FlO 44 Olns 52FII D9 Del 53FI2DANum Lock 45Scroll Lock 46Reference Materials 431
432 <strong>Turbo</strong> <strong>Basic</strong> Owner's Handbook
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Turbo Basic ~Owner;'s HandbookCopyr
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A First Program ...................
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Nondelimited Sequential Files .....
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GOSUB statement ...................
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RSET statement ....................
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Output ............................
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IntroductionTurbo Basic is a self-c
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TypographyThe body of this manual i
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c H A p T E R 1About BASICLike Main
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soon as you press the Enter key (th
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Turbo Basic's enormous compilation
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c H A p T E R 2Touring Turbo BasicT
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your AUTO EXEC. BAT file (see Appen
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• Run to execute programs or comp
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Block operations can be performed w
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_ •. --------------------",Turbo
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As its name implies, the selections
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I..ILI 1 •••••roaa=lfte(I
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Use the Directory option in the Fil
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The System WindowsTurbo Basic provi
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c H A p T E R 3Turbo Basic: The Pro
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The editor uses approximately 50 co
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Basic Movement CommarulsHere are so
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Use Overwrite mode to replace old t
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Miscellaneous Editing CommandsThis
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When the search string is specifIed
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The CompilerTurbo Basic's compiler
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Turbo Basic's context-sensitive hel
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Be certain to choose unique file na
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detected, you are placed in the edi
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• Bounds• Overflow• Stack tes
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Note that Overflow checking occurs
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.... ---_._----- .-ltes .... 'e ---
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Save Options/Window/SetupS saves th
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When a run-time error occurs, Turbo
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c H A p T E R 4Turbo Basic: The Lan
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Examples include:SORTSUBROUTINE:Ex;
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Reseroed WordsTurbo Basic reserves
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Numbers in Turbo·BasicThe care and
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y Interpretive BASIC. (For more inf
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A numeric constant with a decimal p
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VariablesA variable is an identifie
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In an enhancement to Interpretive B
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Even though this code compiles with
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ExpressionsAn expression consists o
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Relational OperatorsRelational oper
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An OR mask sets selected bits of an
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FunctionsThere are two types of fun
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Line 170 determines the value FNFac
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Consider this program that defines
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ActionReturn a valueCalling methodP
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Doing sO'will not, however, change
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Local arrays are automatically deal
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equal to 170; 3 passes this test, s
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Note that the space character canno
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parent of this directory. For examp
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to write it all back at the end. In
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Consider the following program and
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double-precision values into Micros
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And following is a sample program u
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Device I/OTurbo Basic supports so-c
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Line 1, Column 1 Columns (1-80)80~L
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Absolute and Relative CoordinatesMo
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c H A p T E R 5Turbo Basic Referenc
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pathA string expression describing
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$COM metastatementFunctionSyntaxRem
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$EVENT metastatementFunctionSyntaxR
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$INCLUDE metastatementFunctionSynta
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$INLINE metastatementFunctionSyntax
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$SOUND metastatementFunctionSyntaxR
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$STATIC metastatementFunctionSyntax
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ASC functionFunctionSyntaxRemarksRe
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See AlsoExampleConvert degrees to r
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BIN$ functionFunctionSyntaxRemarksS
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BSAVE statementFunctionSyntaxRemark
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Integer% = 1Longlnt& = 2SinglePrel
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See AlsoExampleREG as a function re
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CDBLfunctionFunctionSyntaxRestricti
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CHAIN statementFunctionSyntaxRemark
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CHDIR statementFunctionSyntaxRemark
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CINT functionFunctionSyntaxRemarksD
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oExampleaspect is a numeric express
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PRINTI display no longer existing s
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CLOSE statementFunctionSyntaxRemark
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COLOR statement (graphics mode)Func
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Example I This program demonstrates
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RestrictionsBackground values of 0
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PRINT IICOM Port input: II;ComPortI
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COMMON statementFunctionSyntaxRemar
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COS functionFunctionSyntaxRemarksSe
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CSRLIN functionFunctionSyntaxRemark
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FOR I% = 1 TO 5 I read data from fi
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DATA statementFunctionSyntaxRemarks
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DATE$ system variableFunctionSyntax
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DEF FN/END DEF statementFunctionSyn
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See AlsoExampleLOCALSHAREDSTATIC$ST
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Restrictionsvariable j's first appe
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, define segment for POKE and BSAVE
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DIM statementFunctionSyntaxRemarksD
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DO/LOOP statementFunctionSyntaxDO/L
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FunctionSyntaxRemarksDRAW draws sha
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RestrictionsExampleIn each instance
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ENDMEM functionFunctionSyntaxRemark
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ENVIRON$ functionFunctionSyntaxRema
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ERADRfunctionFunctionSyntaxRemarksS
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ERDEV, ERDEV$functionsFunctionSynta
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IIan insufficient number of dataele
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EXIT statementFunctionSyntaxRemarks
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PRINT RND(Dummy%)I this is the same
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FIELD statementFunctionSyntaxRemark
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FIX functionFunctionSyntaxRemarksSe
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The counter variable in the NEXT st
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GET statement (fiks)FunctionSyntaxR
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Turbo Basic stores the graphics dat
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CALL CreateFile, create data file,
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GOTO statementFunctionSyntaxRemarks
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IF statementFunctionSyntaxRemarksDi
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IF block statementFunctionSyntaxIF
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INCR statementFunctionSyntaxRemarks
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ExamplePRINT "Enter some characters
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INPUT statementFunctionSyntaxRemark
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I read a line of text from theI seq
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INS TAT functionFunctionSyntaxRemar
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INT function.FunctionSyntaxRemarksS
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KEY statementFunctionSyntaxRemarksK
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KEY(n) statementFunctionSyntaxRemar
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KILL statementFunctionSyntaxRemarks
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LCASE$ functionFunctionSyntaxRemark
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LEN functionFunctionSyntaxRemarksEx
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LINE statementFunctionSyntaxRemarks
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UNE INPUT statementFunctionSyntaxRe
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I input an entire line regardless o
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LOCAL statementFunctionSyntaxRemark
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LOF functionFunctionSyntaxRemarksEx
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LPOS functionFunctionSyntaxRemarksS
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LSET statement, FunctionSyntaxRemar
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MID$ functionFunctionSyntaxRemarksS
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MKDIR statementFunctionSyntaxRemark
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Example OPEN "MKILSD.DTA" AS 11 LEN
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MTIMERfunction and statementFunctio
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OCT$ functionFunctionSyntaxRemarksS
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ON ERROR statementFunctionSyntaxRem
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ON/GOTO statementFunctionSyntaxRema
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ON KEY(IO) GOSUB GoodByeI turn FlO
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ON PLAY statementFunctionSyntaxRema
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ON STRIG statementFunctionSyntaxRem
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ON TIMER statementFunctionSyntaxRem
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See AlsoExampleThe two forms of the
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, move the file pOinter to the end
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See AlsoExampleThe msec argument of
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OUT statementFunctionSyntaxRemarksE
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For example, the following pattern
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PALETTE, PALETTE USING statementsFu
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PEEK functionFunctionSyntaxRemarksS
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PEN statementFunctionSyntaxRemarksS
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PLAY statementFunctionSyntaxRemarks
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See AlsoExampleMF"Music Foreground"
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POINT functianFunctionSyntaxRemarks
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POS functianFunctionSyntaxRemarksSe
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PRINT statementFunctionSyntaxRemark
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PRINT # and PRINT # USING statement
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PRINT USING statementFunctionSyntax
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PSET statementFunctionSyntaxRemarks
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PUT statement (graphics)FunctionSyn
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PUT$ functionFunctionSyntaxRemarksS
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READ statementFunctionSyntaxRemarks
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ExampleDEFINT a-zDIM a(100)DIM Fill
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RESET 'statementFunctionSyntaxRemar
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RESUME statementFunctionSyntaxRemar
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RIGHT$ functionFunctionSyntaxRemark
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RND functionFunctionSyntaxRemarksSe
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RUN statementFunctionSyntaxRemarksE
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SCREEN statementFunctionSyntaxRemar
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SEEK statementFunctionSyntaxRemarks
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SELECT statementFunctionSyntaxRemar
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SHARED statementFunctionSyntaxRemar
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SIN functionFunctionSyntaxRemarksSe
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SPACE$ functionFunctionSyntaxRemark
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SQRfunctionFunctionSyntaxRemarksExa
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STICK/unctionFunctionSyntaxRemarksS
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STR$ functionFunctionSyntaxRemarksS
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STRIG statementFunctionSyntaxRemark
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SUB/END SUB, SUB INLINE statements,
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See AlsoExamplecreates three local
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SYSTEM statementFunctionSyntaxRemar
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TAN functionFunctionSyntaxRemarksSe
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TIMER functionFunctionSyntaxRemarks
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THON and THOFF commandsFunctionSynt
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UBOUND functionFunctionSyntaxRemark
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VAL functionFunctionSyntaxRemarksSe
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VARPTR$ functionFunctionSyntaxRemar
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VIEW statementFunctionSyntaxRemarks
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WAlT statementFunctionSyntaxRemarks
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Example I set the value of I to 0I
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Example, set to medium resolution g
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See Alsocreates a 4 trillion point
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Page 398 and 399: A p p E N o x ANumeric Consideratio
Page 400 and 401: And -531 decimal equals two's compl
Page 402 and 403: Increasing SignificanceWord '-1 S-I
Page 404 and 405: A p p E N D x BEvent TrappingTurbo
Page 406 and 407: DispHelpText:oldcsrx = POS(O) : old
Page 408 and 409: A p p E N o x cAssembly Language In
Page 410 and 411: The CALL INTERRUPT StatementThe CAL
Page 412 and 413: As an example, function FNFreeSpace
Page 414 and 415: 4,5: Number of elements in the arra
Page 416 and 417: INLINE Assembly ExampleSuppose you
Page 418 and 419: A p p E N D x DComparing Turbo Basi
Page 420 and 421: MOTORThe cassette port has not prov
Page 422 and 423: Structured StatementsIn an enhancem
Page 424 and 425: Compiler ImplementationCompiler imp
Page 426 and 427: A p p E N D x EError MessagesThere
Page 428 and 429: • Trying to perform invalid mathe
Page 430 and 431: 62 Input past endYou tried to read
Page 432 and 433: 403 $IF nesting overflow·Condition
Page 434 and 435: 428 Numeric scalar variable expecte
Page 436 and 437: 453 Undefined name constantYou used
Page 438 and 439: 476 CLEAR parameter error - use MEM
Page 440 and 441: 499 Destination file write errorWhi
Page 442 and 443: A p p E N D x FReference MaterialsT
Page 444 and 445: Extended Key CodesExtended key code
Page 448 and 449: A p p E N D x GA DOS PrimerIf you a
Page 450 and 451: There's one thing you need to remem
Page 452 and 453: "Where Am If The $p $g PromptYou pr
Page 454 and 455: • To move to the root directory:
Page 456 and 457: A p p E N o x HSummary of Functions
Page 458 and 459: Error HandlingERADRERDEV/ERRDEV$ERL
Page 460 and 461: GraphicsCIRCLEDRAWLINEPAINTPEEKPEN
Page 462 and 463: Metastatements$COM$DYNAMIC$EVENT$IF
Page 464 and 465: ScreenCLSCOLORCOLORCSRLINLOCATEPOSS
Page 466 and 467: A p p E N D x ICustomizing Turho Ba
Page 468 and 469: Once you press Enter to modify a ke
Page 470 and 471: Color Display ModeTurbo Basic will
Page 472 and 473: Index457
Page 474 and 475: CHR$ function, 148and ASC, 131and P
Page 476 and 477: GGET statement (files), 106, 108, 1
Page 478 and 479: ON COM(n) statement, 270ON ERROR st
Page 480 and 481: Statements, 59-60Static arrays, 76a
Page 482 and 483: BorlandSoftwareINTERNATIONAL 4585 S
Page 484 and 485: The Organizer For The Computer Age!
Page 486 and 487: 1 : 'rl'~ _AIASEIThe high-performan
Page 488 and 489: If you use an IBM® PC, you needT U
Page 490 and 491: Version 3.0 with 8081 support and B
Page 492 and 493: nIRBO PASCAl.DATARJlSE100tsox®Is T
Page 494 and 495: mRBOPASCAl..EDJ2OR 2t:ol,BOX®It's
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GAM.EWo.Rrcs®~.2VR80,PASCA£' ,Sec
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"'" ",,,,,D.-Enhances Turbo Prolog
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Includes treeMicroCalc spreadsheetw
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l,rIIEl; 111 IA1AIA"~rj • • AIA
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BorlandSoftwareOBDBll fODAY_______j
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YOUNprobably know us for our Turbo
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