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io.h

Provides basic input/output functionalities.

`io_out_byte(port, data)` - function (void)

Writes one byte of data to port. This is a wrapper around the assembly outb instruction.

`io_in_byte(port)` - function (uint8_t)

Reads one byte from port and returns it. This is a wrapper around the assembly inb instruction.

`io_wait()` - function (void)

Waits one IO cycle. Should be used to give the devices enough time to respond.