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What part of the motherboard controls PC speaker beeps?

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First post, by Dugaro

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I heard that the PC Speaker uses a PIT (Intel 8254/8253/8255) to control the beeps. Is this true? Looking through the motherboard of my IBM PC300GL, I dont see anything of an 8254, 8253, or 8255 anywhere AT ALL.

If this is not true, what does really control the beeps? Can I unsolder it not affecting the machine? Ask me anything about it.

Dugaro, Commander of the IBM PS/2

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Reply 1 of 1, by SquallStrife

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On anything later than a PC 5150, the PIT is integrated into some other chip. In a modern computer it's probably the ICH or Southbridge.

If you want to silence it, just disconnect the speaker. If it's a piezo buzzer mounted on the motherboard, you'll just need to desolder that.

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