Difference between revisions of "OPEN"

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OPEN is used to open a file, COM(serial) or LPT(parallel) port.
 
OPEN is used to open a file, COM(serial) or LPT(parallel) port.
  
Open can use 5 different modes:  
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''Syntax 1:'' OPEN FileName$ FOR Mode AS #FileNumber
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''FileName$:'' as a string file name using the DOS 8.3 convention naming limits.
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''Modes:'' Open can use 5 different modes:  
  
 
   [[OUTPUT]]: Creates a new file or erases an existing file for program output
 
   [[OUTPUT]]: Creates a new file or erases an existing file for program output
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   [[RANDOM]]: Creates a new file or uses input and/or output from an existing file
 
   [[RANDOM]]: Creates a new file or uses input and/or output from an existing file
 
   [[INPUT]] : Only reads input from an existing file
 
   [[INPUT]] : Only reads input from an existing file
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''FileNumber:'' as an Integer number or value from [[FREEFILE]]

Revision as of 07:47, 28 August 2009

OPEN is used to open a file, COM(serial) or LPT(parallel) port.

Syntax 1: OPEN FileName$ FOR Mode AS #FileNumber


FileName$: as a string file name using the DOS 8.3 convention naming limits.


Modes: Open can use 5 different modes:

 OUTPUT: Creates a new file or erases an existing file for program output
 APPEND: Creates a new file or appends data output to an existing file
 BINARY: Creates a new file or uses input and/or output from an existing file
 RANDOM: Creates a new file or uses input and/or output from an existing file
 INPUT : Only reads input from an existing file

FileNumber: as an Integer number or value from FREEFILE