#include #include void outb(uint16_t port, uint8_t value) { // Send byte to port asm volatile("outb %1, %0" : : "dN" (port), "a" (value)); } uint8_t inb(uint16_t port) { uint8_t ret; asm volatile("inb %1, %0" : "=a" (ret) : "dN" (port)); return ret; } void outw(uint16_t port, uint16_t value) { asm volatile("outw %1, %0" : : "dN" (port), "a" (value)); } uint16_t inw(uint16_t port) { uint16_t ret; asm volatile("inw %1, %0" : "=a" (ret) : "dN" (port)); return ret; }