用汇编语言编写的简单文本编辑器

这是一个文本编辑器的源码：自己用MASM编译一下，肯定能用
red_chr macro                              ;读取字符宏定义
        mov ah,0
        int 16h
endm
string  macro p1                          ;输入字符光标
        mov ah,9
        lea dx,p1
        int 21h
endm
win macro opr1,opr2,opr3,opr4,opr5,opr6    ;建立窗口
         mov ah,06h
         mov al,opr1
         mov bh,opr2
         mov ch,opr3
         mov cl,opr4
         mov dh,opr5
         mov dl,opr6
         int 10h
endm
pos_curse macro op1,op2,op3               ;定义光标位置
         mov ah,2
         mov bh,op1
         mov dh,op2
         mov dl,op3
         int 10h
endm
pos_get  macro                             ;显示光标位置
         mov ah,03h
         mov bh,0

         int 10h
endm
data     segment                           ;定义数据段
         menu     db 'File  Edit  Help $'
        
         mass_1   db 'F1 Active file     F10 Active help','$'
         manu_1   db ' New      ',13,10,'$'
         manu_2   db ' Open     ',13,10,'$'
         manu_3   db ' Save     ',13,10,'$'
         manu_4   db ' Save as  ',13,10,'$'
         manu_5   db ' Exit     ','$'
         handle   dw ?
         message1 db ' Please input file name:','$'
         message2 db ' Please input save file name:','$'
         message3 db ' Please input open file name:','$'
         message4 db ' ***The file is not save! Save it now? (Y/N)***: ','$'
         path     db 50 dup(0),'$'
         buffer   db 2000 dup(?)
         bak      db 3850 dup(0)
         line     db ?
         row      db ?
         char     db ?
    help_mas1 db ' welcome use editor! $'       ;帮助内容
    help_mas2 db 'please the first active help! $'
    help_mas3 db 'good lucky!! $'
    help_mas4 db '==========================================================$'
    help_mas5 db 'Press F1 to active file. $'
    help_mas6 db 'You can use DOWN cursor key to choose the fuction $'
    help_mas7 db 'Press F10 to show the help massage.Press Esc To Quit$'
    date  db  'today ??/??/','$'      ;调用日期