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__dpmi_set_protected_mode_interrupt_vector
==========================================

Syntax
------

     #include <dpmi.h>
     
     int __dpmi_set_protected_mode_interrupt_vector(int _vector, __dpmi_paddr *_address);

Description
-----------

Please refer to DPMI Specification: for details on DPMI function   
call operation.  Also see DPMI Overview: for general information.   

DPMI function AX = 0x0205

This function installs a protected-mode interrupt (not exception)
handler.  You must pass a selector:offset pair.  Hardware interrupts
will always be reflected to protected mode if you install a handler.
You must explicitely `sti' before `iret' because `iret' won't always
restore interrupts in a virtual environment.

Return Value
------------

-1 on error, else zero.