Im so sorry,
made a fault in subtracting the index. Here is the right way.

Enter with pointer in w
Exit with Value1 to Value4 in w
...
addwf    pcl,f
xorlw    ( 0 xor VALUE1 xor VALUE2 xor 1 )
xorlw    ( 1 xor VALUE2 xor VALUE3 xor 2 )
xorlw    ( 2 xor VALUE3 xor VALUE4 xor 3 )
xorlw    ( 3 xor VALUE4 )
...

Germain

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