Yokotashi

$cat parport.c
#include <stdio.h>
#include <sys/io.h>

int port = 0;

int
init_parport(int p)
{
        int err;

        err = ioperm(port = p, 3, 1);
        if (err)
                perror("ioperm");
        return err;
}

int
done_parport()
{
        int err = ioperm(port, 3, 0);

        if (err)
                perror("ioperm");
        return err;
}

unsigned char
parport_read()
{
        return inb(port+1);
}

int
parport_write(unsigned char x)
{
        outb(x, port);
        return 0;
}

int
parport_write2(unsigned char x)
{
        outb(x, port+2);
        return 0;
}