When C1Out is 1 you set PortB.0 HIGH and when C1Out is 0 you set PortB.1 HIGH. But there is no code in the loop to set
either of the outputs LOW again.
Code:
lop:
if C1Out = 1 THEN
PortB.0 = 1 ' One on
PortB.1 = 0 ' The other off
ELSE
PortB.0 = 0 ' On off
PortB.1 = 1 ' The other on
ENDIF
GOTO lop
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