实验12
本帖最后由 雪球丶 于 2020-3-18 21:09 编辑实验9代码
assume cs:code
code segment
start:
mov ax,cs
mov ds,ax
mov si,offset do0
mov ax,0
mov es,ax
mov di,200h ;将do0写到0:200处
mov cx,offset do0end-offset do0
cld
rep movsb
;设置中断向量表
mov ax,0
mov es,ax ;将es指向中断向量表
mov word ptr es:,200h
mov word ptr es:,0
mov ax,4c00h
int 21h
do0: jmp short do0start
db 'divide error!'
do0start:
mov ax,cs
mov ds,ax
mov si,202h ;ds:si指向字符串
mov ax,0b800h ;显存地址
mov es,ax ;es指向显存
mov di,12*160+34*2 ;第十二行第34列开始显示
mov ah,04h ;红字
mov cx,13 ;12个ascii字符
s: mov al,ds:
mov es:,ax
inc si
add di,2
loop s
mov ax,4c00h
int 21h
do0end: nop
code ends
end start
测试程序代码
assume cs:code
code segment
start:
mov ax,0FFFFH
mov cl,1
div cl
mov ax,4c00h
int 21h
code ends
end start
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