HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

              INT 28 - DOS Idle Loop / Scheduler  (Undocumented)

       - issued by DOS during keyboard poll loop
       - indicates DOS may be carefully re-entered by TSR
       - used by TSR programs to popup and make DOS disk I/O calls
       - supported by OS/2 compatibility box
       - default behavior is to simply perform an IRET
       - any DOS functions above 0Ch may be called while in this handler
       - INT 21,3F and INT 21,40 may not use a handle that refers to
         CON while in this handler
       - see also  INDOS

Esc or Alt-X to exit int 28 Home/PgUp/PgDn/End ←↑↓→
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