实验10：编写子程序之显示字符串

编译环境：masm

运行结果：正确

assume cs:codedata segmentdb 'Welcome to masm!',0data endscode segmentstart:  mov dh,8mov dl,3mov cl,2mov ax,datamov ds,axmov ax,0B800hmov es,axmov si,0mov di,0call show_strok:mov ax,4c00hint 21hshow_str:dec dhmov al,160mul dhmov bx,axdec dlmov al,2mul dladd bx,axmov dl,cls:  mov cl,ds:[si]jcxz okmov es:[bx+di],clmov byte ptr es:[bx+di+1],00000010binc siadd di,2loop scode endsend start