HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

                   INT 21,44,6 / IOCTL,6 - Get Input Status


       AH = 44h
       AL = 06
       BX = handle


       on return
       CF = 0 if successful
          = 1 if error
       AX = error code if CF set  (see DOS ERROR CODES)
       AL = 00  if EOF (files), or not ready (char devices)
          = FF  if not EOF (files), or ready (char devices)


       - used to determine if a file or device is ready for input
       - can be used to determine EOF unless EOF caused by INT 21,42

Esc or Alt-X to exit int 21,44,6 Home/PgUp/PgDn/End ←↑↓→
Converted to HTML in 2006 by Timo Bingmann