17 lines
487 B
Markdown
17 lines
487 B
Markdown
|
---
|
||
|
|
title: "io.h"
|
||
|
|
summary: "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.
|