To make room for the FPP's 1877s in ROC4, three 1881s and an 1877 were removed. They were taken to the BigBite Electronics cabinet.
The contents of the three 1881s (three helicity twisted pairs, a ribbon of PiR, and a Synch twisted pair) were combined into a single 1881 now located in slot 25. The 1875 which contains the S1 and S2m TDCs is now in slot 24, and the 1877 containing, among other things, the Cerenkov TDCs is now in slot 23.
This leaves 12 free slots between those three and the VDC TDCs for FPP.
ROC3 and ROC4 were turned off for this procedure, and it would probably be a good idea not to turn them back on until Larry has had a chance to make sure they don't get angry at the change in cards.
The appropriate databases will be updated momentarily.