I'm afraid your code is unreadable!

Did you check it in the 'Preview' before posting?

At a guess, I'd say you're using TABs for spacing - don't do it, because this is what you will get!
See: http://www.8052.com/faqs.phtml?FAQ=120199

Use spaces instead - with an increment of just 3 or 4 spaces for each level of indentation.

For exaple:

void code phrase1()
{
   static unsigned char string1[]="CALIBRATE  "; // You must ensure that there are 10 chars INCLUDING WHITE SPACE
                                                 // or else @ will show up on display
                                                 // and phrase must be written in UPPERCASE LETTERS
                                                 // or else garbage will show up on display!!!!
   unsigned char z;                              
   for (z=0;z<=9;z++)
   {
      P0 = (string1[z] & 0xBF);  // Parse the data array for 10 array elements        
      write_enable();            // Must strobe the write pin on the rising edge
                                 // to latch char into memory position
                                 // for each char in array 
   }
}