請教smart2210的startup.s文件內(nèi)中斷向量在如下的中斷向量中,irq中斷的跳轉(zhuǎn)地址算得是:0x18-0xff0= 0xffff f028但是在lpc2210芯片中,0xffff f028是一個沒有定義的空間。請問這是怎么回事? entry;interrupt vectors;中斷向量表reset ldr pc, resetaddr ldr pc, undefinedaddr ldr pc, swi_addr ldr pc, prefetchaddr ldr pc, dataabortaddr dcd 0xb9205f80 ldr pc, [pc, #-0xff0] ldr pc, fiq_addr
movff 0xfe0,0xfe4 0003d8 ffe4 0003da 6ee4 movwf 0xe4,0x0 0003dc eccf call 0x519e,0x0 0003de f028... ... retfie 0x000021e eccf call 0x519e,0x0 void interrupthandlerhigh( void ) 000220 f028 00519e cfda movff 0xfda,0xfe4 0051a0