> Jinx, I tried that write code segment and that didn't work also

I'm certain the code is fine. This is what I'm using currently on the
18F452 and it works OK. It's the 18F equivalent of the 628 code

save    bsf     eecon1,wren   ;enable write
         mov     0x55,eecon2
         mov     0xaa,eecon2
         bsf     eecon1,wr     ;initiate write cycle

wrend   btfsc   eecon1,wr     ;wait for WR bit to clear
         bra     wrend2
         bcf     eecon1,wren
         return

> Also, I tried writing to it with the programmer and reading it back
> with the programmer but it came back as 00's

Trying another 628 should tell you what's going on

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