在学习到王爽汇编语言的第13章最后实验题的时候,有一个这样的实验题。
题目:下面的程序,分别在屏幕的第2,4,6,8行显示4句英文诗,补全程序。
程序如下:
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,———
mov di,0
mov ah,2
int 10h
mov dx,————
mov ah,9
int 21h
————
————
loop ok
mov ax,4c00h
int 21h
code ends
end start
我的填空是:
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]
mov di,0
mov ah,2
int 10h
mov dx,[bx]
mov ah,9
int 21h
add bx,2
inc si
loop ok
mov ax,4c00h
int 21h
code ends
end start