G'day James, I've not used either of these chips, CWG, or PPS, but I've looked briefly at the two datasheets. Moving from PIC16F1508 to PIC16F18854 adds silicon IP for a peripheral pin select (PPS) module. Block diagrams in the '18854 CWG section refer to signal names in the IP rather than signal names exposed in registers or at pins. So my guess is that "Gx1OEx <3:0> bits" are internal signals; and the datasheet is in error at that point. On your related question; from the description of the '18854 PPS section, especially figure 13-1 simplified PPS block diagram, and section 13.3 on bidirectional pins, it doesn't seem likely to me that your hitching of outputs will affect the inputs. Consider them default-assigned, along with the other inputs also default-assigned to RB0 and RB1. So if you don't want to use the CWGxIN signals, make sure you have not selected them in the CWGxISM register. (per table 20-2). --=20 James Cameron http://quozl.netrek.org/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .