程序代码：

.model tiny                            
.stack                                 ;栈段
.data                                  ;数据段
    Hello    db    'Hello World!','$'
.code                                  ;代码段
start:
org 100h
jmp    Main
org 103h
Print    Macro    Str
        Mov     ax,     data               ;但这句会报错，显示"Improper operand type :DATA",我该怎样将.data段变成数据段呢？
        Mov     ds,     ax
        lea    dx,    Str
    call        DisplayStr
    endm
Main:
    Print Hello

    Mov    ax,    04c00h
    int        21h
DisplayStr:
    Mov    ah,    9h
    int        21h
    ret
end start

程序代码：

.model small                
Print    Macro    Str
        Mov     ax,@data
        Mov     ds,ax
        lea        dx,Str
        call    DisplayStr
        endm    
.stack                                 ;栈段
.data                                  ;数据段
    Hello    db    'Hello World!','$'
.code                                  ;代码段
start:
    Print    Hello
    Mov        ax,04c00h
    int        21h
DisplayStr:
    Mov        ah,9h
    int        21h
    ret
end start

[此贴子已经被作者于2020-7-22 14:02编辑过]