#include "devices.h"#include "devtbl.h"/* device table:    This table should contain all of the device driver functions    (cntrl/open/close/read/write) for each device in the system.    This allows all devices to be accessed through read/write/ioctl    functions; thus, making the application code somewhat independent    of the underlying hardware.  This scheme is taken from XINU.*/struct device devtbl[] = {     { tty0init, tty0ctrl, nodriver, nodriver,       /* TTY0 */        tty0read,   tty0write, "PPC403_UARTA" },    { tty1init, tty1ctrl,   nodriver,   nodriver,       /* TTY1 */        tty1read,   tty1write, "PPC403_UARTB" },    { 0,0,0,0,0,0,(char *)0 }};