?? sound.asm
字號:
data segment
a1 db 'hello!',0dh,0ah,'$'
data ends
code segment
assume cs:code,ds:data
start:mov ax,data
mov ds,ax
mov dx,offset a1
mov ah,09h
int 21h
mov cx,10
mov di,988
mov bx,1000
sing: call sound
loop sing
mov ah,4ch
int 21h
;---------sound-------
sound proc near
push ax
push bx
push cx
push di
mov al,0b6h
out 43h,al
mov dx,0020h
mov ax,34deh
div di
out 42h,al
mov al,ah
out 42h,al
in al,61h ;read PB
mov ah,al
or al,3
out 61h,al
wait1: mov cx,07fffh
delay:loop delay
dec bx
jnz wait1
mov al,ah
out 61h,al
pop di
pop cx
pop bx
pop ax
ret
sound endp
code ends
end start
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