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I have been working on FTDI FT2232H chip to interface with I2C devices. I have started to learn AN_177 application note pdf. I have no EEPROM to expreience,no oscilloscope to see waveforms. My goal is to comprehend the code itself and taking notes for my future projects. Here is the line that i dont completely understand: buffer[bytesToTransfer++]=registerAddress; /* Addressed inside EEPROM */

/* poll to check completition */
    while((writeComplete==0)&& (retry<I2C_WRITE_COMPLETION_RETRY))
    {
        bytesToTransfer=0;
        bytesTransfered=0;
        buffer[bytesToTransfer++]=registerAddress; /* Addressed inside EEPROM  */
        status = I2C_DeviceWrite(ftHandle, slaveAddress, bytesToTransfer,buffer, &bytesTransfered, I2C_TRANSFER_OPTIONS_START_BIT|I2C_TRANSFER_OPTIONS_BREAK_ON_NACK);

        if((FT_OK == status) && (bytesToTransfer == bytesTransfered))
        {
            writeComplete=1;
            printf("  ... Write done\n");
        }
        retry++;
    }

You can see and understand that the while loop is the polling part. I checked the datasheet of 24LC024H I2C EEPROM and they mentioned about Acknowladge Polling (Page 10) is a feature of this kind of EEPROMs'. Acknowladge Polling basicly checks when the device is ready to send data. There is a flow diagram too... you could take a look.
In the 24LC024H datasheet related to Acknowladge Polling they say polling part consist of START + Control Byte (or Slave address) + R/W bit, not include address inside EEPROM (Word address in I2C protocol) . So why FTDI guys included this line of code? Am I missing something?
Sorry for my bad english.
Best regards..