Hello Tibono,
I think that the score is the sum of 2 parts :
material points = (@223h) with 77AB : 01 1E 03 05 03 09 , the king has a value of 30 pawns.
positionnal points = (@222h)
And so 256 positionnal points = one material point = 1 pawn = 1 :
Code:
8B21 : EE 22 02 inc X0222
8B24 : D0 03 bne L8B29
8B26 : EE 23 02 inc X0223
8B29 L8B29:
I agree with your understanding.
Cordially.