Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
Int 21h Function 15h
 Detail                                    Up Contents Index Back
────────────────────────────────────────────────────────────────────────────
 
  Interrupt:   21h     Function:   15h
 
  Title:       Sequential Write
 
  See also:    Write to File or Device
 
  Description:
 
     Writes the next sequential block of data into a file and then
     increments the file pointer appropriately.
 
     Input                         Output
 
     AH = 15h                      AL = 00h (if write successful)
     DS:DX = segment:offset of        = 01h (if disk full)
             previously opened        = 02h (if segment wrap)
             file control block
                                    -♦-