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1、点阵动态显示图形或文字P0口输出列数据，P2口输出行数据，本显示为8*8LED点阵显示，显示的图案是个心。请看程序：org0000hstart:loop3:movr3,#2movr4,#0movp0,#0ffhloop1:movr0,#0lcallxianshidjnzr3,loop1lcalldeyincr4movr3,#2cjner4,#17,loop1sjmploop3xianshi:movr2,#8mova,r4movr1,aloop4:movdptr,#tabbmova,r0movca,@a+dptrmov
2、p0,aincr0movdptr,#tabamova,r1movca,@a+dptrmovp2,aincr1lcalldeydjnzr2,loop4movr1,#0retdey:movr6,#0fhmovr7,#08hpp:djnzr7,$djnzr6,ppretdelay:movr5,#0ffhmovr4,#18hppp:djnzr7,$djnzr6,ppprettaba:db0ffh,0bdh,0bdh,08h,0bdh,0bdh,0ffh,0ffh,0ffh,0bdh,0bdh,081h,0bdh,0bdh,0
3、ffh,0ffh,0ffh,0bdh,0bdh,081h,0bdh,0bdh,0ffh,0ffhtabb:db01h,02h,04h,08h,10h,20h,40h,80hend
