- ttyinput, nodev, nulldev, ttstart, ttymodem,
-#if NBK > 0
- bkopen, bkclose, bkread, ttwrite, bkioctl,
- bkinput, nodev, nulldev, ttstart, nullmodem,
+ ttyinput, enodev, nullop, ttstart, ttymodem, /* 0- termios */
+
+ enodev, enodev, enodev, enodev, enodev, /* 1- defunct */
+ enodev, enodev, enodev, enodev, enodev,
+
+ enodev, enodev, enodev, enodev, enodev, /* 2- defunct */
+ enodev, enodev, enodev, enodev, enodev,
+#if NTB > 0
+ tbopen, tbclose, tbread, enodev, tbioctl,
+ tbinput, enodev, nullop, ttstart, nullmodem, /* 3- TABLDISC */