Internal eeprom - erase block

[skimask]

Hi everyone!
I can read and write now using the pic16f84a but I can't do that using pic16f877a.
Is there any lines I have to add inorder to allow reading and writing the eeprom?
I've read the 16f877a datasheet. It is stated there that I have to disable all interrupts before writing. I've tried that but still won't work.
A working simple code for reading and writing the internal eeprom of pic16f877a is all I need.
Please help me...
Thank you in advance.

Well, since you stated that you have beening trying to get it to work, why do YOU post YOUR code, and I'm sure WE can HELP YOU figure out what YOU are doing WRONG.

And how many times do you have to post the same question, and/or hijack other threads?