Logo Search packages:      
Sourcecode: mailleds version File versions  Download package


 * port.h 
 * Low level I/O functions taken from led-stat.txt
 * Jan 22 95

 Two files were used: the first is a routine written by a roomate
 (damianf@wpi.edu) used to blast raw bytes at a port, and read them. Please
 contact him for more info, or if you want to use it in a progrm of your own.

#ifndef PORT_H
#define PORT_H

static inline int port_in( int port )
  unsigned char value;
  __asm__ volatile ("inb %1,%0"
                    : "=a" (value)
                    : "d" ((unsigned short)port));
  return value;

static inline void port_out( unsigned short int port, unsigned char val )
  __asm__ volatile (
                    "outb %0,%1\n"
                    : "a" (val), "d" (port)
#endif /* PORT_H */
/**** END OF FILE ****/

Generated by  Doxygen 1.6.0   Back to index