is a user mode driver for the Baycom EPP modem family. It currently
supports the conventional EPP modem (using the IDT 72xxx FIFO's)
and the FPGA (Xilinx XCS10) variant. The driver automatically
initializes the FPGA modem depending on the requested mode.
In order to keep the resident memory footprint small (approx
20kBytes plus standard system shared libraries like libc),
the initialization code is contained in a shared library called
This driver is able to automatically attach itself to the
kernel network stack as a network interface (usually called
ax0). To do this it requires the Linux Kernel MKISS driver
accepts the following options:
Display an overview of the available command line parameters and exit.
Increases the verbosity of the output. May be cumulated.
Specifies the base address of the EPP capable parallel port to which
the modem is connected. Use the
prefix to specify hexadecimal numbers.
Specifies various ``firmware'' options.
Do not start up in background as a daemon. Also log received
and transmitted packets to stdout.
Log to syslog.
Kill running baycomepp daemons. Don't start the driver proper.
Start up in EPP FSK mode. Requires the FPGA version.
Start up in EPP AFSK mode. Requires the FPGA version.
Start up in ECP FSK mode. Requires the FPGA version.
Start up in conventional EPP FSK mode. Requires the conventional version.
Set the name of the interface (requires Linux 2.2.x)
Set the hardware address (callsign) of the interface
Set the ip address of the interface
Set the netmask of the interface
Set the broadcast address of the interface
uses FPGA internal clock; don't use if an external oscillator is on board.
uses the external oscillator; recommended if the internal modem is used, as the
frequency of the FPGA oscillator is not accurate enough.
uses the internal modem
uses a DF9IC type modem connected to the high speed modem connector
sets the clock divider for the internal modem (baud=fquartz/16/divider)