Graphic Characters
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LIMITED WARRANTY
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One Tandy Center
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Fort Worth, Texas 76102
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CONTENTS
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This Reference Manual and You
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Setting up the System
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Notes on Using the Recorder
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Special Notes:
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1 / General Information
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Operating Modes
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Special Function Keys
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Variable Names
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Variable Types
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Arithmetic Operators
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Relational Operators
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String Operators
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Order of Operations
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Intrinsic Functions
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Graphics
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Error Messages
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Abbreviations
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Keyboard Rollover
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Glossary for LEVEL II BASIC
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2 / Commands
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CLOAD? "
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CSAVE"1"
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CSAVE"A"
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DELETE 5
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DELETE 11-18
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3 / Input-Output
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@ position, item list
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PRINT TAB
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(expression)
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PRINT USING
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PRINT #-1
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INPUT #-1
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Sample Program
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10 INPUT#-1,A1,B$,L$
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20 PRINT A1,B$,L$
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40 GOTO 10
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4 / Program Statements
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10 DEFINT A,I,N
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10 DEFINT I-N
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100 DEFSNG I,W-Z
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10 DEFDBL S-Z, A-E
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10 DEFSTR L-Z
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10 CLEAR 1000
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ON ERROR GOTO
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Data Conversion
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Typing of Constants
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Type Conversion
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5 / Strings
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String Input/Output
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String Comparisons
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String Operations
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String Space
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(string)
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(string, n)
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STRING$
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Coding/Decoding Program
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Instring Subroutine
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6 / Arrays
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Other Types of Arrays
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7 / Arithmetic Functions
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100 K%=CINT(X#)+CINT(Y#)
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100 Y=COS(X+3.3)
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100 PRINT CSNG(A#+B#)
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100 PRINT EXP(-X)
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100 Y=ABS(A-FIX(A))
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100 Z=INT(A*100+.5)/100
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100 PRINT LOG(3.3*X)
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8 / Special Features
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ERR /2+1
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(address)
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CALL 0A7FH
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JP 0A9AH
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(variable name)
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Logical Operators
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20 GOTO 10
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9 / Editing
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ENTER key
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Space-bar
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100 FOR I=1 TO 10_
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100 FOR I=_
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L (List Line)
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X (Extend Line)
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I (Insert)
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A (Cancel and Restart)
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E (Save Changes and Exit)
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Q (Cancel and Exit)
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H (Hack and Insert)
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D (Delete)
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100 FOR I=1 TO 1_
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10 / Expansion Interface
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Line Printer
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LPRINT CHR$(10)
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LINE ONE
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LINE TWO
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LINE THREE
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POKE 16424,40
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POKE 16425,0
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Mini-Disks - (DISK BASIC)
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Additions to LEVEL II
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Expansion of RAM Memory
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11 / Saving Time and Space
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Speeding Up Execution
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Appendix
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A / Level II Summary
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Commands
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Input/Output Statements
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Program Statements
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String Functions
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Arithmetic Functions*
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Special Functions
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LEVEL II Reserved Words*
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B / Error Codes
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Explanation of Error Messages
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Hard-To-Find Errors
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C / TRS-80 Character Codes
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Decimal/Hexadecimal Codes
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Control Codes: 0-31
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Graphics Codes: 128-191
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Graphic Characters
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D / Memory Map
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Important Addresses
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F / Derived Functions
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G / Base Conversions
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H / User Programs
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Sort Routine
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Space-Ship Lander
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Customer Information
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Target Practice
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Using Your Cassette Deck
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LEVEL II
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Hints and Tips
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