小狗爱晴天

程序的目的是输出“Hello World！" 程序代码： D_SEG SEGMENT STRING DB 'Hello World!',13,10,'$' ;定义字符串STRING,并以'$'为结束符 D_SEG ENDS C_SEG SEGMENT ASSUME CS:C_SEG,DS:D_SEG ;定义CS,DS,入口 START: M

程序目的：设置输出字体的格式，具体见程序注释 程序代码： D_SEG SEGMENT STR1 DB 'Hello World!' ;定义字符串 D_SEG ENDS C_SEG SEGMENT ASSUME CS:C_SEG,DS:D_SEG ;定义CS,DS,入口 START: MOV AX,0B800H MOV ES,AX ;将显存地址0B800H

程序目的：从键盘上键入字符，并将该字符加1再输出 程序代码： D_SEG SEGMENT CHAR1 DB 1 DUP(0) ;定义字符 D_SEG ENDS C_SEG SEGMENT ASSUME CS:C_SEG , DS:D_SEG ;定义CS,DS,入口 START : MOV AX ,0B800H MOV ES ,AX ;将显存地址0B800H赋值