15 lines
555 B
Markdown
15 lines
555 B
Markdown
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---
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title: "pit.h"
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summary: "communicates with the _Programmable Interval Timer_"
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---
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#### `PIT_CHANNEL_0_PORT` - macro
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The IO port, where channel 0 of the PIT (which is capable of firing IRQs) can be configured.
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#### `PIT_DIVISOR` - macro
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The standard divisor, that noxos loads into channel 0 of the PIT.
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`32768` fires an interrupt every `~27ms`, what is perfect for preemptive multithreading.
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#### `pit_set_divisor(divisor)` - function (void)
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Loads **_divisor_** into channel 0 of the PIT.
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If **_divisor_** is smaller than 100, it will be set to 100.
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