iAmqq

1.若無#define USE_AND_OR則
          OpenTimer1((T1_ON & T1_IDLE_CON & T1_GATE_ON & T1_PS_1_8 &
                          T1_SYNC_EXT_ON & T1_SOURCE_INT), PR1_VALUE);

2.若有#define USE_AND_OR則
          OpenTimer1((T1_ON | T1_IDLE_CON | T1_GATE_ON | T1_PS_1_8 |
                        T1_SYNC_EXT_ON | T1_SOURCE_INT), PR1_VALUE);
                       

不過目前僅有PIC24F有支援USE_AND_OR.
PIC24H,dsPIC30及dsPIC33僅有AND mask(方式一)

PS:MPLAB IDE V8.4 C30 V3.22