AH=3EH - 8086 INT 21H

AH = 3Eh - "CLOSE" - CLOSE FILE
Entry: BX = file handle
Return:
CF clear if successful, AX destroyed
CF set on error, AX = error code (06h)
Note: if the file was written to, any pending disk writes are performed, the time and date stamps are set to the current time, and the directory entry is updated

Syntax

MOV AH,3EH
INT 21H

Example

MOV AH,3EH
INT 21H

Output / Return Value

Return:
    CF clear if successful, AX destroyed
    CF set on error, AX = error code (06h)

Limitations

Alternatives / See Also

Reference