ex1_extern.h

基于摩托罗拉S12标准源程序 包括：SCIO,Timer

#define ENABLE	    1
#define DISABLE	    0
#define	EXIT	      0
 
/*-------- Constant -------*/
#define	OK				  1
#define	NOTOK			  0 
#define	NORMAL			0
#define	ERASING			1 
#define	PROGRAM			2 
#define	CR          0x0D
#define	SPACE       0x20
#define	LF          0x0A
//*#define	NULL            0x00
#define	BS          0x08
#define	DEL         0x7F 
#define	EMPTY       0x30
#define	COLON			  0x3A
#define	ESC         0x1B
#define	DOT				  0x2E
#define	TAB         0x09			
#define	CRYSTAL			16000000		/*16Mhz*/
#define	MS80			((CRYSTAL/2)*(8))/1000 
#define Eclock			8000000

typedef unsigned char  byte;

#ifdef Banked
#pragma CODE_SEG CodeForcedToPPage33								 
#else
#pragma CODE_SEG DEFAULT
#endif

// main.c
void init_system(void);

//utility.c
void init_SCI0(void); 
void tx_char0(char data);
void printf0(char *str);
void delay1(void);
void send_asc(byte cdata);
void hex_asc(byte cdata);