P81例4.9 用查表法计算平方(一)

ORG 0000H

MOVDPTR，#TABLE ;表首地址送DPTRMOV A，#05;被查数字05?AMOVC A，@A+DPTR;查表求平方SJMP $

TABLE：DB 0,1,4,9,16,25,36,49,64,81

END

P81例4.9 用查表法计算平方(二)

ORG0000H

0000H MOV A，#05;05 ?A0002H ADDA，#02;修正累加器A0004H MOVC A，@A+PC;查表求平方0005H SJMP $

0007H：DB 0,1,4,9,16,25,36,49,64,81

END