GWBASIC User's Manual

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GW-BASIC <strong>User's</strong> Guide BEEP Statement Purpose: To sound the speaker at 800 Hz (800 cycles per second) for one-quarter of a second. Syntax: BEEP Comments: BEEP, CTRL-G, and PRINT CHR$(7) have the same effect. Examples: 2340 IF X>20 THEN BEEP If X is out of range, the computer beeps. file:///C|/Documents%20and%20Settings/Lorenzo/Desktop/GW%20Basic/BEEP.html28/03/2004 21.29.13
GW-BASIC <strong>User's</strong> Guide BLOAD Command Purpose: To load an image file anywhere in user memory. Syntax: BLOAD filename[,offset] Comments: filename is a valid string expression containing the device and filename. offset is a valid numeric expression within the range of 0 to 65535. This is the offset into the segment, declared by the last DEF SEG statement, where loading is to start. If offset is omitted, the offset specified at BSAVE is assumed; that is, the file is loaded into the same location it was saved from. Note BLOAD does not perform an address range check. It is possible to BLOAD anywhere in memory. You must not BLOAD over the GW-BASIC stack space, a GW-BASIC program, or the GW- BASIC variable area. While BLOAD and BSAVE are useful for loading and saving machine language programs, they are not restricted to them. The DEF SEG statement lets you specify any segment as the source or target for BLOAD and BSAVE. For example, this allows the video screen buffer to be read from or written to the diskette. BLOAD and BSAVE are useful in saving and displaying graphic images. Examples: 10 DEF SEG=&HB800 20 BLOAD"PICTURE", 0 The DEF SEG statement in line 10 points the segment at the screen buffer. The DEF SEG statement in line 10 and the offset of 0 in line 20 guarantee that the correct address is used. The BLOAD command in line 20 loads the file named picture into the screen buffer. Note file:///C|/Documents%20and%20Settings/Lorenzo/Desktop/GW%20Basic/BLOAD.html (1 of 2)28/03/2004 21.29.13
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GWBASIC User's Manual User's Guide
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GWBASIC User's Manual FILES Command
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GWBASIC User's Manual PSET Statemen
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GW-BASIC User's Guide Chapter 1 Wel
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GW-BASIC User's Guide The Glossary
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GW-BASIC User's Guide 2.2.2 Indirec
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GW-BASIC User's Guide Sample GW-BAS
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GW-BASIC User's Guide system assume
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GW-BASIC User's Guide Note Reuse of
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GW-BASIC User's Guide moves the cha
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GW-BASIC User's Guide CTRL-G Causes
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GW-BASIC User's Guide BASIC User's
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GW-BASIC User's Guide Note ↵ (arr
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GW-BASIC User's Guide Appendix H Ke
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GW-BASIC User's Guide KEY(n) n is a
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GW-BASIC User's Guide STRIG Trappin
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GW-BASIC User's Guide KEY(n) Statem
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GW-BASIC User's Guide LOC(x) Return
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GW-BASIC User's Guide 15 KEY OFF:CL
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GW-BASIC User's Guide and check the
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GW-BASIC User's Guide Chapter 3 Rev
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GW-BASIC User's Guide until the RUN
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GW-BASIC User's Guide To save a fil
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GW-BASIC User's Guide Hexadecimal H
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GW-BASIC User's Guide The GW-BASIC
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GW-BASIC User's Guide The arithmeti
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GW-BASIC User's Guide Modulus arith
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GW-BASIC User's Guide EQV X Y X EQV
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GW-BASIC User's Guide RUN FILENAME
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GW-BASIC User's Guide OPTION BASE S
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GW-BASIC User's Guide LET Statement
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GW-BASIC User's Guide . . 400 R=1:
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GW-BASIC User's Guide ● Sequentia
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GW-BASIC User's Guide The program i
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GW-BASIC User's Guide PUT #1, CODE%
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Page 77 and 78: GW-BASIC User's Guide 59-60Unprinta
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Page 91 and 92: GW-BASIC User's Guide DEF USR State
Page 93 and 94: GW-BASIC User's Guide USR Function
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Page 99 and 100: GW-BASIC User's Guide _ Underscore.
Page 101 and 102: GW-BASIC User's Guide Data represen
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Page 109 and 110: GW-BASIC User's Guide graphics A ha
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Page 115 and 116: GW-BASIC User's Guide single-densit
Page 117 and 118: GW-BASIC User's Guide ABS Function
Page 119 and 120: GW-BASIC User's Guide CHR$ Function
Page 121: GW-BASIC User's Guide AUTO Command
Page 125 and 126: GW-BASIC User's Guide BSAVE Command
Page 127 and 128: GW-BASIC User's Guide Note ● Valu
Page 129 and 130: GW-BASIC User's Guide CDBL Function
Page 131 and 132: GW-BASIC User's Guide INT Function
Page 133 and 134: GW-BASIC User's Guide CHAIN Stateme
Page 135 and 136: GW-BASIC User's Guide MERGE Command
Page 137 and 138: GW-BASIC User's Guide CIRCLE Statem
Page 139 and 140: GW-BASIC User's Guide COLOR Stateme
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Page 155 and 156: GW-BASIC User's Guide LINE Statemen
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Page 159 and 160: GW-BASIC User's Guide tile_length i
Page 161 and 162: GW-BASIC User's Guide PRESET and PS
Page 163 and 164: GW-BASIC User's Guide CLEAR Command
Page 165 and 166: GW-BASIC User's Guide CLOSE Stateme
Page 167 and 168: GW-BASIC User's Guide COM(n) Statem
Page 169 and 170: GW-BASIC User's Guide CONT Command
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GW-BASIC User's Guide CVI, CVS, CVD
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GW-BASIC User's Guide DATA Statemen
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GW-BASIC User's Guide RESTORE State
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GW-BASIC User's Guide the value of
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GW-BASIC User's Guide DEFINT/SNG/DB
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GW-BASIC User's Guide DEF and SEG m
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GW-BASIC User's Guide POKE Statemen
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GW-BASIC User's Guide EDIT Command
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GW-BASIC User's Guide ENVIRON State
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GW-BASIC User's Guide ENVIRON$ Func
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GW-BASIC User's Guide SHELL Stateme
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GW-BASIC User's Guide EOF Function
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GW-BASIC User's Guide ERDEV and ERD
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GW-BASIC User's Guide ERROR Stateme
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GW-BASIC User's Guide EXP Function
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GW-BASIC User's Guide FIELD Stateme
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GW-BASIC User's Guide GET Statement
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GW-BASIC User's Guide FOR ... NEXT
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GW-BASIC User's Guide FRE Function
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GW-BASIC User's Guide The number of
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GW-BASIC User's Guide GOTO Statemen
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GW-BASIC User's Guide OCT$ Function
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GW-BASIC User's Guide Testing Equal
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GW-BASIC User's Guide 1070 TIMEOUT%
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GW-BASIC User's Guide INPUT Stateme
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GW-BASIC User's Guide PRINT Stateme
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GW-BASIC User's Guide STRING$ Funct
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GW-BASIC User's Guide PRINT USING S
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GW-BASIC User's Guide ** A double a
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GW-BASIC User's Guide WIDTH Stateme
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GW-BASIC User's Guide INPUT# Statem
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GW-BASIC User's Guide 100 PRINT "TY
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GW-BASIC User's Guide IOCTL Stateme
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GW-BASIC User's Guide KILL Command
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GW-BASIC User's Guide MID$ Function
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GW-BASIC User's Guide LEN FUNCTION
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GW-BASIC User's Guide LINE INPUT# S
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GW-BASIC User's Guide LLIST Command
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GW-BASIC User's Guide LOC Function
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GW-BASIC User's Guide Makes the cur
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GW-BASIC User's Guide It is expecte
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GW-BASIC User's Guide LOG Function
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GW-BASIC User's Guide MID$ Statemen
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GW-BASIC User's Guide NAME Command
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GW-BASIC User's Guide ON ERROR GOTO
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GW-BASIC User's Guide ON ... GOSUB
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GW-BASIC User's Guide reclen is an
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GW-BASIC User's Guide ● Files may
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GW-BASIC User's Guide RESET Command
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GW-BASIC User's Guide Examples: The
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GW-BASIC User's Guide when using GE
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GW-BASIC User's Guide PCOPY Command
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GW-BASIC User's Guide n = 5 Returns
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GW-BASIC User's Guide . (period) A
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GW-BASIC User's Guide PMAP Function
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GW-BASIC User's Guide The following
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GW-BASIC User's Guide If the string
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GW-BASIC User's Guide PUT Statement
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GW-BASIC User's Guide RANDOMIZE Sta
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GW-BASIC User's Guide RND Function
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GW-BASIC User's Guide . . . 129 FOR
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GW-BASIC User's Guide RESUME Statem
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GW-BASIC User's Guide RMDIR Command
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GW-BASIC User's Guide SAVE Command
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GW-BASIC User's Guide SGN Function
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GW-BASIC User's Guide SOUND Stateme
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GW-BASIC User's Guide SPACE$ Functi
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GW-BASIC User's Guide SQR Function
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GW-BASIC User's Guide STOP Statemen
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GW-BASIC User's Guide VAL Function
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GW-BASIC User's Guide STRIG(n) Stat
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GW-BASIC User's Guide SYSTEM Comman
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GW-BASIC User's Guide TAN Function
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GW-BASIC User's Guide 08:00:05 The
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GW-BASIC User's Guide TRON/TROFF Co
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GW-BASIC User's Guide 0 1 Mode The
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GW-BASIC User's Guide VARPTR$ Funct
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GW-BASIC User's Guide The following
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GW-BASIC User's Guide WAIT Statemen
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GW-BASIC User's Guide WINDOW Statem
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GW-BASIC User's Guide WRITE Stateme
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GWBASIC User's Manual

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