Files
jsix_import/src/kernel/io.cpp
F in Chat for Tabs 8f529046a9 [project] Lose the battle between tabs & spaces
I'm a tabs guy. I like tabs, it's an elegant way to represent
indentation instead of brute-forcing it. But I have to admit that the
world seems to be going towards spaces, and tooling tends not to play
nice with tabs. So here we go, changing the whole repo to spaces since
I'm getting tired of all the inconsistent formatting.
2021-08-01 17:46:16 -07:00

23 lines
358 B
C++

#include "io.h"
uint8_t
inb(uint16_t port)
{
uint8_t val;
__asm__ __volatile__ ( "inb %1, %0" : "=a"(val) : "Nd"(port) );
return val;
}
void
outb(uint16_t port, uint8_t val)
{
__asm__ __volatile__ ( "outb %0, %1" :: "a"(val), "Nd"(port) );
}
void
io_wait(unsigned times)
{
for (unsigned i = 0; i < times; ++i)
outb(0x80, 0);
}