汇编语言 字符串的复制

方法一：

assume cs:code, ds:data

data segment

db    'welcome to mams!'

db    '----------------'

data ends

code segment

start:

mov ax, data

mov ds, ax

mov es, ax

mov si, 0

mov di, 16

mov cx, 16

copyData:

mov dl, ds:[si]

mov es:[di], dl

inc si

inc di

loop copyData

mov ax, 4C00H

int 21H

code ends

end start

方法二：

assume cs:code, ds:data

data segment

db    'welcome to mams!'

db    '----------------'

data ends

code segment

start:

mov ax, data

mov ds, ax

mov es, ax

mov si, 0

mov di, 16

mov cx, 8

copyData:

mov dx, ds:[si]

mov es:[di], dx

add si, 2

add di, 2

loop copyData

mov ax, 4C00H

int 21H

code ends

end start

方法三：

assume cs:code, ds:data

data segment

db    'welcome to mams!'

db    '----------------'

data ends

stack segment

dw    0, 0, 0, 0, 0, 0, 0, 0

dw    0, 0, 0, 0, 0, 0, 0, 0

stack ends

code segment

start:

mov ax, stack

mov ss, ax

mov sp, 32

mov ax, data

mov ds, ax

mov es, ax

mov si, 0

mov di, 16

mov cx, 8

copyData:

push ds:[si]

pop es:[di]

add si, 2

add di, 2

loop copyData

mov ax, 4C00H

int 21H

code ends

end start

方法四：

assume cs:code, ds:data

data segment

db    'welcome to mams!'

db    '----------------'

data ends

code segment

start:

mov ax, data

mov ds, ax

mov si, 0

mov cx, 8

copyData:

mov dx, ds:[si]

mov ds:[si + 16], dx

add si, 2

loop copyData

mov ax, 4C00H

int 21H

code ends

end start

程序运行的结果：