Difference between revisions of "OPEN"
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''Bytes:'' Integer number of bytes used in a RANDOM record as defined in a [[FIELD]] or [[TYPE]] definition. | ''Bytes:'' Integer number of bytes used in a RANDOM record as defined in a [[FIELD]] or [[TYPE]] definition. | ||
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| + | ''See also:'' [[CLOSE]] | ||
Revision as of 09:08, 28 August 2009
OPEN is used to open a file, COM(serial) or LPT(parallel) port.
Syntax 1: OPEN FileName$ FOR Mode AS #FileNumber [LEN = Bytes]
FileName$: as a string file name using the DOS 8.3 naming convention limits.
Modes: Open can use 5 different access modes:
OUTPUT: Creates a new file or erases an existing file for new program output APPEND: Creates a new file or appends program output to existing file BINARY: Creates a new file or uses input and/or output from existing file RANDOM: Creates a new file or uses input and/or output from existing file INPUT : Only reads input from an existing file
FileNumber: as a low Integer number or a value from the FREEFILE function.
Bytes: Integer number of bytes used in a RANDOM record as defined in a FIELD or TYPE definition.
See also: CLOSE