FLUSH

FLUSH

Top  Previous  Next

Action

Write current buffer of File to Card and updates Directory

 

 

Syntax

FLUSH #bFileNumber

FLUSH

 

 

Remarks

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

Calls

_FileFlush

_FilesAllFlush

Input

r24: filenumber

 

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