why divide overflow - 编程论坛

#2

zaixuexi2011-11-28 18:02

div cx -> div cl
你另外那个帖子还没结呢:https://bbs.bccn.net/thread-353281-1-1.html
一起结了吧

#3

烟雾中的迷茫2011-11-28 22:06

程序代码：

data segment

num dw 543
data ends
code segment

assume cs:code,ds:data
start:

mov ax,data

mov ds,ax

mov si,0

mov cx,10

mov ax,num

mov bh,0
again:

div cl

mov bl,al

push bx

inc si

mov al,0

cmp al,0

jz exit

jmp again
exit:

pop bx

mov dl,bl

mov ah,02h

int 21h

dec si

cmp si,0

jnz exit

mov ah,4ch

int 21h
code ends

end start

版主啊改了虽然无错误，但是输出结果有错，在帮忙看看撒，哦对了，上面那个贴子是没分的，我想结结不了啊呵呵

#4

烟雾中的迷茫2011-11-28 22:29

程序代码：

data segment

num dw 125
data ends
code segment

assume cs:code,ds:data
start:

mov ax,data

mov ds,ax

mov si,0

mov cx,10

mov ax,num

mov bh,0
again:

div cl

mov bl,al

push bx

inc si

cmp al,0

jz exit

mov al,0

jmp again
exit:

pop bx

add bl,30h

mov dl,bl

mov ah,02h

int 21h

dec si

cmp si,0

jnz exit

mov ah,4ch

int 21h
code ends

end start

修改后的但是还是有问题丫丫的

#5

zaixuexi2011-11-29 11:23

题目先描述一下吧

#6

烟雾中的迷茫2011-11-29 12:59

哦其实我只是想实现从键盘输入的ASKII数能在屏幕上以十进制显示出来(使用push，pop堆栈）

#7

zaixuexi2011-11-29 14:42

程序代码：

data segment
    num dw  1066
data ends
code segment
    assume cs:code,ds:data
start:
    mov ax,data
    mov ds,ax
    mov si,0           ;short int count = 0;
    mov cl,10          ;unsigned char k = 10;
    mov ax,num         ;short int num = 125;
    mov bh,0           ;short int tmp = 0;
again:
    div cl
    mov bl,ah          ;*(unsigned char*)&tmp = HIBYTE(num / k);
    push bx            ;*--sys_stack = tmp;
    inc si             ;count++;
    mov ah,0
    cmp al,0
    jnz again          ;if (num / k != 0) goto again;
exit:
    pop bx             ;tmp = *sys_stack++;
    add bl,30h
    mov dl,bl
    mov ah,02h         ;putchar(tmp + '0');
    int 21h
    dec si             ;count--;
    cmp si,0
    jnz exit           ;if (count != 0) goto exit
    mov ah,4ch
    int 21h            ;exit(0);
code ends
end start

#8

烟雾中的迷茫2011-11-29 20:42

呵呵还是版主行啊不过如果是5477在大一点就不行了就又是上面的提示

[ 本帖最后由烟雾中的迷茫于 2011-11-29 20:43 编辑 ]

#9

zaixuexi2011-11-29 21:15

程序代码：

data segment
    num dw  1
data ends
code segment
    assume cs:code,ds:data
start:
    mov ax,data
    mov ds,ax
    mov cx,0ffffh      ;short int times = 65535;
next:
    push cx
    mov si,0           ;short int count = 0;
    mov cx,10          ;short int k = 10;
    mov ax,num         ;short int num = 1;
    xor bx,bx          ;short int tmp = {0};
again:
    xor dx,dx
    div cx
    mov bx,dx          ;tmp = num % k;
    push bx            ;*--sys_stack = tmp;
    inc si             ;count++;
    cmp ax,0
    jnz again          ;if (num / k != 0) goto again;
exit:
    pop bx             ;tmp = *sys_stack++;
    add bl,30h
    mov dl,bl
    mov ah,02h         ;putchar(tmp + '0');
    int 21h
    dec si             ;count--;
    cmp si,0
    jnz exit           ;if (count != 0) goto exit
    mov dl,20h
    int 21h            ;putchar(' ');
    inc word ptr ds:[num]    ;num++;
    pop cx
    loop next          ;while (times--);
    mov ah,4ch
    int 21h            ;exit(0);
code ends
end start

有时候也要自己学着调试(走),慢慢的学会编(跑),再学会设计(飞),不管学什么语言如果连调试都不会,将来出去是要被人笑话的.

#10

zaixuexi2011-11-29 21:18

版主不行,还叫版主么,哈哈哈

#11

烟雾中的迷茫2011-11-30 17:00

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