dcons(4)
NAME
dcons - dumb console device driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: options GDB device firewire device dcons Alternatively, to load the driver as a module at boot time, place the following line in your kernel configuration file: options GDB and in loader.conf(5): dcons_load="YES"
DESCRIPTION
- The dcons device is a simple console device which just reads
- from and
writes to an allocated buffer for input and output respec - tively. It is
of no use by itself and it is supposed that the buffer is - accessed via a
bus like firewire(4) or kvm(3) for interaction. - The buffer consists of 4 channels. There are 2 ports, one
- for the console TTY and another is GDB port, then each port has an in
- put channel and
an output channel.
FILES
/dev/dcons
/etc/ttys
EXAMPLES
- If you want to run getty(8) on dcons, insert the following
- line into
ttys(5) and send a HUP signal to init(8) using kill(1).
dcons "/usr/libexec/getty std.9600" vt100 on- secure
- Once the fwohci(4) device is initialized to allow physical
- access, the
buffer can be accessed from another host via a firewire(4) - bus using the
dconschat(8) application. See dconschat(8) for more de - tails.
SEE ALSO
AUTHORS
Hidetoshi Shimokawa <simokawa@FreeBSD.org>
BUGS
- This driver is currently under development.
- BSD October 7, 2005