FLUSH
Contents |
Action
Write current buffer of File to Card and updates Directory
Syntax
FLUSH #bFileNumber
FLUSH
Remarks
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BFileNumber |
Filenumber, which identifies an opened file such as #1 or #ff |
This function writes all information of an open file, which is not saved yet to the Disk. Normally the Card is updated, if a file will be closed or changed to another sector.
When no file number is specified, all open files will be flushed.
Flush does not need additional buffers. You could use FLUSH to be absolutely sure that data is written to the disk. For example in a data log application which is updated infrequently. A power failure could result in a problem when there would be data in the buffer.
See also
INITFILESYSTEM , OPEN , CLOSE, PRINT, LINE INPUT, LOC, LOF , EOF , FREEFILE , FILEATTR , SEEK , BSAVE , BLOAD ,KILL , DISKFREE , DISKSIZE , GET , PUT , FILEDATE , FILETIME , FILEDATETIME , DIR , FILELEN , WRITE , INPUT
ASM
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Calls |
_FileFlush |
_FilesAllFlush |
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Input |
r24: filenumber |
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Output |
r25: Errorcode |
C-Flag: Set on Error |
Partial Example
$include "startup.inc" 'open the file in BINARY mode Open "test.biN" For Binary As #2 Put #2 , B ' write a byte Put #2 , W ' write a word Put #2 , L ' write a long Ltemp = Loc(#2) + 1 ' get the position of the next byte Print Ltemp ;" LOC"' store the location of the file pointer Print Lof(#2);" length of file" Print Fileattr(#2);" file mode"' should be 32 for binary Put #2 , Sn ' write a single Put #2 , Stxt ' write a string Flush #2 ' flush to disk Close #2
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