cx — driver for synchronous/asynchronous Cronyx Sigma WAN adapters

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

       The cx 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 cx 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:  0x240, 0x260, 0x280, 0x300, 0x320, 0x380
       IRQ:   3, 5, 7, 10, 11, 12, 15
       DMA:   5, 6, 7

       The  cx  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 cx adapter configuration.

       The cx driver supports the following cards:

       •   Cronyx Sigma-22, Sigma-24
       •   Cronyx Sigma-100
       •   Cronyx Sigma-400, Sigma-401, Sigma-404, Sigma-410, Sigma-440
       •   Cronyx Sigma-500
       •   Cronyx Sigma-703
       •   Cronyx Sigma-800, Sigma-801, Sigma-810, Sigma-840

       The cx driver was updated in FreeBSD 5.2 and FreeBSD 4.10.  In most of the previous versions  of  FreeBSD
       the  cx  driver  is  out  of  date.   The  cx  driver  for previous versions of FreeBSD is available from
       http://www.cronyx.ru/.

Debian                                            March 2, 2020                                            CX(4)

       cx — driver for synchronous/asynchronous Cronyx Sigma WAN adapters

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

       To compile this driver into the kernel, place the following line in your kernel configuration file:

             devicecx

       Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

             if_cx_load="YES"

       Additional options:
       devicespppoptionsNETGRAPHoptionsNETGRAPH_CRONYX

       In /boot/device.hints:
       hint.cx.0.at="isa"hint.cx.0.port="0x240"hint.cx.0.irq="15"hint.cx.0.drq="7"