io.h

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extern int ioperm(unsigned long from, unsigned long num, int turn_on);

extern int iopl(int level);

extern void outdw(unsigned short port, unsigned long dword);

extern void outw(unsigned short port, unsigned short word);

extern void outb(unsigned short port, unsigned char byte);

extern unsigned long indw(unsigned short port);

extern unsigned short inw(unsigned short port);

extern unsigned char inb(unsigned short port);

/* @} End of a file */