chen22.asm

微机原理——接口应用编程源码

stack segment stack
dw 64 dup(?)
stack ends
data segment
q6 db 'I am a good student'
q7 db 'I am a student'
data ends
code segment
     assume cs:code, ds:data
start:
mov ax,data 
mov ds,ax
push ds

mov ax,0000h
mov ds,ax
mov ax ,offset IRQ6
add ax,2000h
mov si,0038h
mov [si],ax
mov ax,0000h
mov si,003ah
mov [si],ax
pop ds

mov al, 13h
out 20h,al
mov al,08h
out 21h,al
mov al,09h
out 21h,al
mov al,0bfh
out 21h,al

IRQ6:
STI
call delly
mov ax,0136h
int 0Ah
mov al,20h
out 20h,al
IRET
DELLY PROC
PUSH AX 
PUSH CX
MOV CX ,1000H
A:
MOV AX,1000H
LOOP A
POP CX
POP AX
DELLY ENDP
CODE ENDS
END START