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Programmable Interval Timer: Difference between revisions
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→Channel 2: put in link to programming pc speaker
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=== Channel 2 ===
The output of PIT channel 2 is connected to the PC speaker, so that frequency of the output determines the frequency of the sound produced by the speaker. This is the only channel where the gate input can be controlled by software (via. bit 0 of I/O port 0x61), and the only channel where it's output can be read by software (via. bit 5 of I/O port 0x61). Details of how to program the PC speaker
== I/O Ports ==
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