Provided by: freebsd-manpages_12.2-1_all bug


     ctau — driver for synchronous Cronyx Tau WAN adapters


     device ctau

     Additional options:
     device sppp
     options NETGRAPH
     options NETGRAPH_CRONYX

     In /boot/device.hints:"isa"


     The ctau driver is not present in FreeBSD 13.0 and later.


     The ctau driver needs either sppp(4) or netgraph(4).  Which one to use is determined by the
     NETGRAPH_CRONYX option.  If this option is present in your kernel configuration file, the
     ctau driver will be compiled with netgraph(4) support.  Otherwise, it will be compiled with
     sppp(4) support.

     The base I/O port address specified in /boot/device.hints must match the port address set by
     the jumpers on the board.  The DMA I/O channel and interrupt request numbers are configured
     by software at adapter initialization.  Legal values are:

     Port:  0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0x300, 0x320, 0x340, 0x360,
            0x380, 0x3a0, 0x3c0, 0x3e0
     IRQ:   3, 5, 7, 10, 11, 12, 15
     DMA:   5, 6, 7

     The ctau driver supports autodetection.  As for all non-PNP hardware, using autodetection
     could lead to some potential problems with other devices during the hardware detection
     process.  It is always better to specify hardware resources manually.

     Refer to sconfig(8) for information about the ctau adapter configuration.


     The ctau driver supports the following cards:

        Cronyx Tau (RS-232/V.35)
        Cronyx Tau/R (RS-530/RS-449)
        Cronyx Tau/E1 (fractional E1)
        Cronyx Tau/G703 (unframed E1)


     cp(4), cx(4), sppp(4), ifconfig(8), sconfig(8), spppcontrol(8)


     The ctau driver was added in FreeBSD 5.3 and FreeBSD 4.10.  The ctau driver for previous
     versions of FreeBSD is available from