I am sorry for increasing thje noise / entropy level of this nice list.
  Actaully, I am feeling stuck up, that is why I am bothering you people once again.
   
  After doing some more reading from every where, I changed my code to the one pasted below, but still I am no where...
  Can any body correct me Pls...
   
  #include <16f84.h>
  #define EEPROM_SCL  PIN_A0
#define EEPROM_SDA  PIN_A1
  #use i2c(master,sda=EEPROM_SDA, scl=EEPROM_SCL)
  #define EEPROM_ADDRESS byte
#define EEPROM_SIZE    256
  //EEPROM = 24LC00, it can be any model.
// Configure PIC to use: XT clock, no code protection 
// Disable Power Up Timer, no Watchdog Timer,
  #fuses XT, NOPROTECT, NOPUT, NOWDT
  // tell compiler clock is 4MHz.  This is required for DELAY_MS()
// and for serial I/O, all of which use software delay loops.
#use delay (clock=4000000)
  
// declare that we'll manually establish the data direction of
// each I/O pin on ports A&B.
#use fast_io ( a )
#use fast_io ( b )
   
  #byte   PORT_A  =   5           /* set variable that maps to memory */
#byte   PORT_B  =   6           /* set variable that maps to memory */
   
  void init_ext_eeprom(void)
{
   output_low(eeprom_scl);
   output_high(eeprom_sda);
}
  
void write_ext_eeprom(byte address, byte data) 
{
   i2c_start();   
   i2c_write(0xa0);
   PORT_B=0;   // to debug, program never execyte this statemen.
   i2c_write(address);
   i2c_write(data);
   i2c_stop();
   delay_ms(11);
}
  
byte read_ext_eeprom(byte address) 
{
   byte data;
     i2c_start();
   i2c_write(0xa0);
   i2c_write(address);
   i2c_start();
   i2c_write(0xa1);
   data=i2c_read(0);
   i2c_stop();
   return(data);
}
   
  void main(void)
{
   byte data;
   
   set_tris_a (0b00000000);              /* set up I/O's */   
   set_tris_b (0b00000000);              /* set up I/O's */
   
   PORT_A=0;   
   PORT_B=0;
   
   init_ext_eeprom();
   
   while(1)
   {
      data=0xff;   //just to debug
      
      PORT_B=data;
      
      delay_ms(500);    
      
      write_ext_eeprom(5,data);
      
      PORT_B=0;      //just to debug
      
      data= read_ext_eeprom(5);
      
      PORT_B=data;
      
      delay_ms(500);      
   }      
}

  In the while loop of main, I am trying to use portb for debug purposes. Before write_ext_eeprom(5,data);, every thing goes fine but it seems that in this function, the program gets hooked up and does nothing further.
   
  Adam

       
---------------------------------
Ahhh...imagining that irresistible "new car" smell?
 Check outnew cars at Yahoo! Autos.
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist