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2个开关控制1个灯泡
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.title “vectors.asm” .ref _c_int0,_nothing .sect “.vectors” reset: b _c_int0 int1: b _nothing int2: b _nothing int3: b _nothing int4: b _nothing int5: b _nothing int6: b _nothing #include “register.h” Initial() { asm(“setc SXM”); asm(“clrc OVM ”); asm(“clrc CNF”); asm(“setc INTM ”); *SCSR1=0x83FE; *WDCR=0x0E8; *IMR=0x0000; *IFR=0x0FFFF; *MCRA=*MCRA&0x0FF; *PBDA TDIR=*PBDA TDIR|0