rx.c a working rx01 driver. Two interleave factors are supported, non-interleaved (IBM standard) and DEC interleaving, used in RT-11. Special minor device numbers are used to access the different interleaving factors, see the source code for details. rxreg.h this is /usr/include/sys/rxreg.h. In contains register definitions for the rx01 driver Keith Packard 5440 SE 41st Portland, OR 97202 ...!tektronix!azure!keithp ...!tektronix!reed!motel6!keith