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_inp, _inpw, _inpd
Inputs a byte (_inp), a word (_inpw), or a double word (_inpd) from a port.
int _inp( unsigned short port ); unsigned short _inpw( unsigned short port ); unsigned long _inpd( unsigned short port );
The _inp, _inpw, and _inpd functions read a byte, a word, and a double word, respectively, from the specified input port. The input value can be any unsigned short integer in the range 0 – 65,535.
Because these functions read directly from an I/O port, they might not be used in user code in Windows NT, Windows 2000, Windows XP, and Windows Server 2003. For information about using I/O ports in these operating systems, use the Win32 Communications API.
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.