This is for those peoples that was looking to interface an E2PROM to
16F877:
Routines (in hitech c) for read and write to I2C EEPROMS:


read_serial_I2C(unsigned char device)
       {
        SEN = 1;                // START
 while (SEN == 1);     //wait until star condition finish
 SSPIF = 0;
          SSPBUF = device+0;     // E2PROM "name" (like 10100000) +
WRITEcommand
 while (SSPIF == 0);
 SSPIF = 0;
          SSPBUF = MSB_address; // most significant byte of the 16bits
address
 while (SSPIF == 0);
 SSPIF = 0;
          SSPBUF = LSB_address;
 while (SSPIF == 0);
 PEN = 1;    //generate na stop
 while (PEN == 1);   //wait until stop sequence finish
 SEN = 1;   //START again
 while (SEN == 1);
 SSPIF = 0;
          SSPBUF = device+1; // 24LC02 + READcommand
 while (SSPIF == 0);  //wait until the SSPBUF is full of data
 now the byte that was at address MSB_address and LSB_address is
available at SSPBUF variable.


record_I2C(unsigned char device)
       {
   SEN = 1;
   while (SEN == 1) ;
   SSPIF = 0;
   SSPBUF = device+0;
   while (SSPIF == 0);
   SSPIF = 0;
   SSPBUF = MSB_address;
   while (SSPIF == 0);
   SSPIF = 0;
   SSPBUF = LSB_address;
   while (SSPIF == 0);
   SSPIF = 0;
   SSPBUF = record_data;  //record in memory (EEPROM) the 8bit type
"record_data"
   while (SSPIF == 0);
   PEN = 1;
   while (PEN == 1) ;
       };

now the variable is recorded in EEPROM.


That's it guys,

Beto.