How does bochs calculate the eip after executing an instruction ?

hi:

   I am debuging kernel with bochs , and find a problem .

   Here is an instruction at address 0x1110,its length is 2 bytes.
   after bochs execute this instruction,eip should be 0x11102,but bochs gives 0x1113 to me ?
   what is the probable reason ?

thanks! 

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