HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

               INT 33,19 - Get User Alternate Interrupt Address

       AX = 19h
       CX = user interrupt call mask (see below)


       on return:
       BX:DX = user interrupt vector
       CX = user interrupt call mask or zero if not found

               │F-8│7│6│5│4│3│2│1│0│ user interrupt mask in CX
                 │  │ │ │ │ │ │ │ └─── alt key pressed during event
                 │  │ │ │ │ │ │ └──── ctrl key pressed during event
                 │  │ │ │ │ │ └───── shift key pressed during event
                 │  │ │ │ │ └────── right button up event
                 │  │ │ │ └─────── right button down event
                 │  │ │ └──────── left button up event
                 │  │ └───────── left button down event
                 │  └────────── cursor moved
                 └──────────── unused

       - returns vector to function defined by INT 33,18
       - searches the event handlers defined by INT 33,18 for a routine
         with a call mask matching CX

Esc or Alt-X to exit int 33,19 Home/PgUp/PgDn/End ←↑↓→