汇编语言(王爽 第三版)实验十三

assume cs:code
code segment
start:    mov ax,cs
mov ds,ax
mov si,offset show
mov ax,0
mov es,ax
mov di,200h
mov cx,offset showend-offset show
cld
rep movsb

mov ax,0
mov es,ax
mov word ptr es:[7ch*4],200h
mov word ptr es:[7ch*4+2],0

mov ax,0b800h
mov es,ax
mov di,160*12
mov bx,offset s-offset se
mov cx,80
s:    mov byte ptr es:[di],'!'
mov byte ptr es:[di+1],2
add di,2
int 7ch
se:    nop
mov ax,4c00h
int 21h

show:    push bp
mov bp,sp
dec cx
jcxz return
add [bp+2],bx

return:    pop bp
iret
showend:nop
code ends
end start

assume cs:code
code segment
s1:    db 'Good,better,best,','$'
s2:    db 'Never let it rest,','$'
s3:    db 'Till good is better,','$'
s4:    db 'And better,best,','$'
s:    dw offset s1,offset s2,offset s3,offset s4
row:    db 2,4,6,8

start:    mov ax,cs
mov ds,ax
mov bx,offset s
mov si,offset row
mov cx,4
ok:    mov bh,0
mov dh,[si]*160
mov dl,0
mov ah,2
int 10h

mov dx,[bx]
mov ah,9
int 21h

inc si
add bx,2
loop ok

mov ax,4c00h
int 21h
code ends
end start