21 lines
346 B
C
21 lines
346 B
C
|
#include "io.h"
|
||
|
|
||
|
void outb(uint16_t port, uint8_t val)
|
||
|
{
|
||
|
asm volatile("outb %0, %1" : : "a"(val), "Nd"(port));
|
||
|
}
|
||
|
|
||
|
uint8_t inb(uint16_t port)
|
||
|
{
|
||
|
uint8_t ret;
|
||
|
asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port));
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
void wait(void)
|
||
|
{
|
||
|
asm volatile("jmp 1f\n\t"
|
||
|
"1:jmp 2f\n\t"
|
||
|
"2:");
|
||
|
}
|