In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Tracy Allen wrote:

Interesting.  How about CMP_OE?...

The comparator is enabled (bit 7 of CMP_B=0), and comparator output is enabled (bit 6 of CMP_B=0), then RB.0 is the comparator output and overrides TRIS and the RB.0 states.   But when CMP_OE=1, then RB.0 and !RB.0 manage that pin.

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