HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

                   INT 21,46 - Force Duplicate File Handle

       AH = 46h
       BX = existing file handle
       CX = second file handle

       on return:
       AX = error code if CF set  (see DOS ERROR CODES)

       - if file handle in CX is currently open, current file
         identified by CX is closed and the handle in BX is
         dupped and placed in CX
       - after duping file handles move together through file
       - similar to INT 21,45

Esc or Alt-X to exit int 21,46 Home/PgUp/PgDn/End ←↑↓→
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