RAM扩展编程将内存某连续地址的内容送到外部RAM中并求和用LED显示结果

ORG0000HajmpmainORG0100Hmain:MOVR0,#10HMOVR1,#30HMOVR2,#00HMOVDPTR,#7800HMOVP1,#00HMOVA,#00HLOOP1:MOV@R1,AINCAINCR1DJNZR0,LOOP1CLRAMOVR0,#10HMOVR1,#30HMOVR2,#00HLOOP2:MOVA,@R1MOVDPL,R2MOVX@