In fact it’s probably easier to XOR the PORTB because it makes more sense ... 0xFF ;temporarity use intReg2 as a bit mask out PINB, intReg2 ;writing to PINB effectivley does an Exclusive OR ...

and white solder mask. I think AND!XOR is hands-down the best at documenting their badges, but within a limit of the puzzles they design into them. In this case, most people would reach for the ...