Channel D (A-B) function is calculated incorrectly

[dementianati]

Patch for Process.c to correct problem with (A-B) calculation.

The code confuses + and - signs, so the calculation offsets the display incorrectly. The following diff to the Process.c file corrects this.

. # diff Process.c Process_corrected.c
.
. 37c37
. < s16 Posi_412, Posi_41, Posi_42, Posi_4_2, Posi_4F1, Posi_4F2, Posi_4F3, Posi_4F4;
. ---
. > s16 Posi_412, Posi_41_2, Posi_41, Posi_42, Posi_4_2, Posi_4F1, Posi_4F2, Posi_4F3, Posi_4F4;
. 326a327
. > Posi_41_2 = _4_posi - _1_posi + _2_posi;
. 539c540
. < Tmp = Posi_412 + Va - Vb;
. ---
. > Tmp = Posi_41_2 + Va - Vb;

[pmos69]

Thank you, and sorry for the delay.
Not really been able to do any further work on this due to lack of time.
Patch commited.