[SOLVED] PC speaker does not work

[Klakap]

Good day!
I tried to play sound from the PC speaker code:
BITS 16

Code: Select all

start:
mov ax, 07C0h ; Set 4K stack space after this bootloader
add ax,, 288 ; (4096 + 512) / 16 apartments under paragraph
mov ss, ax
mov sp, 4096

mov ax, 07C0h ; Set data segment to where we're loaded
mov ds, ax

mov ax, 1000
call os_speaker_tone

jmp $

os_speaker_tone:
pusha

mov cx, ax ; Store note value now

mov al, 182
out 43h, al
mov ax, cx ; Set the frequency
out 42h, al
mov al, ah
out 42h, al

in al, 61 h ; Switch PC speaker
or al, 03h
of the 61 h, al

popa
ret

(This is a function of MikeOS.) But the sound does not work. When I run MikeOS, so sound worked. Please what do I do?

[iansjack]

Silly question, but - does your computer actually have a speaker (connected)?

[Klakap]

As far as I know, in the MikeOS PC speaker does not connect and the sound works. But when I copied the method from MikeOS that plays sound(os_speaker_tone) so after call his, I didn't get result!

[iansjack]

You didn't answer my silly question.

Never mind.

[Klakap]

MikeOS and my OS I run through qemu. I don't know whether it is in qemu a Pc speaker connected or not.

[Klakap]

I already found the problem, it was sufficient to run the kernel:

qemu-system-i386 -soundhw pcspk -kernel kernel

PC speaker works!