Board ordering in fitter packet data

[V1 V0]

[U1 U0]

[X3 X2]

[X1 X0]

Alternatively, where the boards are indexed in increasing z:

[5, 3, 4, 2, 7, 6, 1, 0]

TP + GBT BCID matching

Currently, the BCID reported in the TP is taken from the second packet in the GBT buffer (where we have alternating packets from the two ADDCs).

This currently corresponds to packets from ADDC B, which feeds in data from MMFE8 boards 0-3.

ADDC and TP configuration

ADDC A: [A1 A2 A3 A4]

ADDC B: [B1 B2 B3 B4]