speaker programming

[serat]

Hi again,

How will the below codes generate some tone although you disable the speaker?

How do the codes work?

; disables the speaker, and stop using channel 2
mov dx, 0x61
out dx, 0

; generates tone from speaker
out dx, 11111101b


thanks

[pathos]

If I'm not mistaken, those lines of code are just examples on how to do it, now actually to be executed in order.