汇编语言练习7.9

;datasg段的每个单词的前4个单词变成大写assume cs:codesg,ss:stacksg,ds:datasg;栈段stacksg segmentdw 0,0,0,0,0,0,0,0stacksg ends;数据段datasg segmentdb '1. display      'db '2. brows        'db '3. replace      'db '4. modify       'datasg ends;代码段codesg segmentstart:mov ax, stacksgmov ss, axmov sp, 16mov ax, datasgmov ds, axmov bx, 0mov cx, 4s0:push cxmov si, 3mov cx, 4s:mov al, [bx+si]and al, 11011111bmov [bx+si], alinc siloop sadd bx, 16pop cxloop s0mov ax,4c00hint 21Hcodesg endsend start