求高手帮忙看看思路和语句还有什么不对的么

P.s__葬爱 · 发表于 2012-11-27 09:10:48

题目：求0-9任意数的平方并输出
代码段：
data segment
x dw ?
msg db‘this is an error!$'
data ends
code segment
  assume cs: code,ds:data
start:
  mov ax,data
  mov ax,x
  mov ah,1
  int 21h
  mov ds,ax
  cmp x,0
  jl exit0
  cmp x,9
  jg exit0
  mov ax,x
  imul ax,ax
  mov ah,9
  int 21h
exit0:
  mov ah,9
  mov dx,offset ,msg
  mov ah,4h
  int 21h
code ends
end start

菇凉’ · 发表于 2012-11-27 13:24:16

{:7_165:}看不懂

s0512 · 发表于 2012-11-27 14:31:27

data segment
x dw 0,0,'$' 
msg db 'this is an error!$'
data ends
code segment
assume cs: code,ds:data
start:
mov ax,data 
mov ds,ax 
mov ah,1
int 21h
mov bx,0 
cmp al,30h
jb exit0
cmp al,39h
ja exit0
mov ah,0
and al,00001111b
mul al 
call htod
mov ah,9
int 21h
mov ah,01
int 21h
exit0:
lea dx, msg
mov ah,9 
int 21h 
mov ax,4c00h
int 21h
htod:
push bx
push dx
push si
mov si,0
mov bl,10
star: div bl
cmp ah,0
je h_ok
add ah,30h 
mov dh,0
mov dl,ah
push dx
inc si
xor ah,ah
jmp star
h_ok: mov cx,si
mov bx,0 
h_s: pop word ptr ds:[bx] 
inc bx
loop h_s 
pop si
pop dx 
pop bx
ret 
code ends
end start

DEBUG下查看正常。。。
但直接运行有乱码。。。
超出我能力范围了。。。

s0512 · 发表于 2012-11-27 15:24:27

本帖最后由 s0512 于 2012-11-27 15:29 编辑

data segment
x dw 0,0,'

 
msg db 'this is an error!


data ends
code segment
assume cs: code,ds:data
start:
mov ax,data 
mov ds,ax 
mov ah,1
int 21h
mov bx,0 
cmp al,30h
jb exit0
cmp al,39h
ja exit0
mov ah,0
and al,00001111b
mul al 
call htod
lea dx,x
mov ah,9
int 21h
mov ah,01
int 21h
exit0:
lea dx, msg
mov ah,9 
int 21h 
mov ax,0100h
int 21h
htod:
push bx
push dx
push si
mov si,0
mov bl,10
star: div bl
cmp ah,0
je h_ok
add ah,30h 
mov dh,0
mov dl,ah
push dx
inc si
xor ah,ah
jmp star
h_ok: mov cx,si
mov bx,0 
h_s: pop word ptr ds:[bx] 
inc bx
loop h_s 
pop si
pop dx 
pop bx
ret 
code ends
end start

s0512 · 发表于 2012-11-27 15:30:02

楼主试下，有问题没

s0512 · 发表于 2012-11-27 15:31:06

木有长进，一点功能写N长！

阔怀 · 发表于 2015-8-29 10:29:52

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