#define uchar     unsigned char  
#define uint      unsigned int   

#define NULL	  ((void *)0L)

#define	OK	   	   0  
#define TRUE	   0  

#define	ERROR	   1  
#define	FALSE	   1  

#define FULL       2  
#define NORMAL     1  
#define EMPTY      0  


#define IDLE 	   PCON |= 1