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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

   ◄Summary►  ◄Notes►  ◄Example►  ◄Back►
──────────────────────────────────────────────────────────────────────────────
 
  Description:  Initialize or Scroll Down Window      [MDA] [CGA] [PCjr]
                                                      [EGA] [MCGA] [VGA]
 
  Initializes a specified window of the display to ASCII blank characters
  with a given attribute, or scrolls down the contents of a window by a
  specified number of lines.
 
  Input                                                     Output
  ══════════════════════════════════════════════            ═══════
  AH=07H                                                    Nothing
  AL=number of lines to scroll (if zero, entire
   window is blanked)
  BH=attribute to be used for blanked area
  CH=y coordinate, upper-left corner of window
  CL=x coordinate, upper-left corner of window
  DH=y coordinate, lower-right corner of window
  DL=x coordinate, lower-right corner of window
                                    -♦-