Serial Comm RS232 from 8051 to pc problem.

Hi all,

I have done one simple serial rs232 c program in keil and when download in eprom it produce no output on the termulator.This program is to do serial transmission from 8051 to pc.

Here is the code:

/* RS232 SIMPLE TRIAL */

#include <stdio.h>
#include <reg51.h>


/*Function to initialize RS232 serial port*/
void serial_init()
{
	SCON=0X50;		//Setup for 8-bit data
	TMOD=0X20;		//Setup Timer 1 for auto-reload
	TH1=0XFD;		//Setup for 9600 baud
	TR1=1;			//Turn on Timer 1
	T1=1;			//Indicate Ready to Transmit
}

/*This func display a null-terminated string on the rs232 port*/

void send_serial(unsigned char*s)
{
 while(*s!=0x0)
 {
  SBUF=*s;
  while(!T1)
  {  }
  T1=0;
  s++;
  }
}

/*Start of main program*/

main()
{
 unsigned char crlf[]={0x0D,0x0A,0x0};
 serial_init();
 for (;;)
 {
  send_serial("Another test");
  send_serial(crlf);
 }
}

since i am using off chip memory i have set it to 0x0000. But when i turn on the board, there is no data displayed except letter 'n'. Why this thing happen? I am using Maxim 232.

your help is much appreciated.