hi Barf and thank you for your reply but I can't follow you.

so let's take the example with the "POWER": 807F 1AE5
* DSF each should be two digits?
so-
D: 80
S: 7F
F: 1A
and what about the left over "E5"?

* if I follow you I now need to convert DSF lke so:
D= 0x80 -> 0b10000000 -> now why we need to reverseit?
S= 0x7F -> 0b1111111 -> reverse that too? to what?
F= 0x1A -> 0b11010 -> same question
and again, what about the left over of "E5"?

* besides, why we need to reverse the bits?

thank you for your answer, I would really appreciate if you can explain the process in details.