www.pudn.com > 8051_pppsrc.zip > COMM.H, change:2000-10-09,size:1216b

#ifndef __COMM_H 
#define __COMM_H	1 
 
#include "Notation.h" 
 
#define	COM1	0x3F8 
#define COM2	0x2F8 
#define COM4	0x2E8 
 
#define RBR		0	// Receive Buffer 
#define THR		0	// Transmitter Buffer 
#define DIVISOR_BAJO	0	// Latch divisor low 
#define DIVISOR_ALTO	1       // Latch divisor high 
#define	IER		1	// Interrupt Enable Register 
#define IIR		2	// Interrupt ID Register 
#define LCR		3	// Line Control Register 
#define MCR		4	// Modem Control Register 
#define LSR		5	// Line Status Register 
#define MSR		6	// Modem Status Register 
 
 
#define LATCH_DIVISOR	128 
#define HABILITA_INT	8 
 
#define	RX_ENABLE	1	//RxRDY Enable IRQ 
#define TX_ENABLE	2	//Tx Biuffer Empty IRQ 
#define MODEM_STATUS	8	//Modem handshake lines have changed 
 
#define PIC_ICR		0x20	// PIC address 
#define PIC_IMR		0x21	// PIC IRQ Mask Register 
#define COM1_ISR	0x0C	// COM1 Vector Table Index 
#define COM2_ISR	0x0B	// COM2 Vector Table index 
#define COM4_ISR	0x08 + 9	// COM2 Vector Table index 
 
//////////////// Functions to Export //////////////////// 
void InitCommDriver (void); 
void OpenComm (Word CommPort); 
void CloseComm (void); 
void AssignCommEventProc (EventProc Proc); 
void WriteComm (Byte c); 
 
 
#endif