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Re: 請問有關效能問題.....
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高級會員
 
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各位高手大家好.....
有關上面這個問題.... 我看了一下Spec. 有了一些心得..........在此提出...如有誤請多多指教...!!! PIC18F2455的Data Memory有規劃16個Bank.... 因此一般如果我們用Movwf在做存取時會先下Banksel來指定要被存取的Bank...存取速度快... 而Wovff是做兩個暫存器之間的存取... 其過程忽略BSR的值...... 需預先載入....完整的12Bits的位址..... 所以效能比較差........ sorry....不太會表達....煩請高手多多指教和補充....^^
發表於: 2006/8/2 18:46
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請問有關效能問題.....
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高級會員
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各位高手大家好..............
bb res 1 define aa 0x00 movlw aa movwf bb 有人說以下的寫法效能比較差.... movff aa, bb 我是覺得效能應該都一樣啦.... 請教各位高手......真的有差嗎...?
發表於: 2006/7/31 15:38
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