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Functions RTIn, RTInW, RTInD

These functions read a byte, word, or dword value from an I/O port:

BYTE  RTIn (unsigned int addr); 
WORD  RTInW(unsigned int addr); 
DWORD RTInD(unsigned int addr);

Parameters

addr

The I/O port to read from.

return value

The value read from the specified I/O port.

Functions RTOut, RTOutW, RTOutD