第8.8章 PORTB Interrupt-on-Change An input change on PORTB<7:4> sets flag bit RBIF(INTCON<0>). The interrupt can be enabled/disabled by setting/clearing enable bit, RBIE (INTCON<3>). Interrupt priority for PORTB interrupt-on-change is determined by the value contained in the interrupt priority bit, RBIP (INTCON2<0>).