How do I play music with BIOS POST beepers?

[s355]

I want to play the can-can song. First I want only the melody. If polyphony is possible I want to do all parts.

 

[USAFRet]

How do I play music with BIOS POST beepers?

Rewrite the BIOS.

 

[punkncat]

I mean, if you are being serious here....

The BIOS speaker is typically a piezo. They are triggered by voltage and don't (typically) do anything aside from the one noise level and tone. So, you would first have to locate piezo that each had the specific tone you were looking for. Beyond that you would have to design a relay set being commanded by some other control board/device that would activate each relay as needed to play the tone and thus the tune. I am sure there are other more elegant ways to make this happen but my electrical background is based in alarm components. You can do almost anything with an array of relays.

 

[s355]

Rewrite the BIOS.

This speaker will be removed and used on a separate circuit.

 

[USAFRet]

This speaker will be removed and used on a separate circuit.

And that means what, exactly?

Currently, the BIOS is coded to do a certain action when a certain condition is met.
You'd have to make the BIOS do something different.

 

[TerryLaze]

Running dos you can run a sound driver that will use the PC beeper to play anything you want.
It's called speaker.drv

This speaker will be removed and used on a separate circuit.

Then it's just a normal speaker and you can search for general "sound circuitry" on the net

 

[USAFRet]

Running dos you can run a sound driver that will use the PC beeper to play anything you want.
It's called speaker.drv

Ah, but this is before DOS happens, in the BIOS POST.

 

[TerryLaze]

Ah, but this is before DOS happens, in the BIOS POST.

He just meant the beeper that you can hear when the bios posts, at least that's what I understood and also the only thing that would make sense.
No normal person has used the term pc beeper or speaker for the last 20 years or something so it makes sense that most people don't know what to call it.