HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

                        INT 15,91 - Interrupt Complete

       AH = 91h

       on return:
       CF = 0 if successful
          = 1 if error
       AH = when CF set, 80h for PC & PCjr, 86h for XT (BIOS 11/8/82)
       AL = type code:
          = 00  disk
          = 01  diskette
          = 02  keyboard
          = 03  pointing device
          = 80  network (ES:BX = NCB)
          = FC  fixed disk reset (PS/2)
          = FD  diskette motor start
          = FE  printer

       - should not be used by applications software
       - used by the BIOS to indicate device interrupt is complete
       - used for multitasking OS development

Esc or Alt-X to exit int 15,91 Home/PgUp/PgDn/End ←↑↓→