DCONS(4) | Device Drivers Manual | DCONS(4) |
NAME¶
dcons — dumb console device driverSYNOPSIS¶
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:
device firewire
device dcons
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 respectively. 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 input 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 aHUP
signal to init(8) using
kill(1).
dcons "/usr/libexec/getty std.9600" vt100 on secure
dcons_gdb="1"
SEE ALSO¶
dcons_crom(4), ddb(4), firewire(4), fwohci(4), gdb(4), ttys(5), conscontrol(8), dconschat(8), fwcontrol(8)AUTHORS¶
Hidetoshi Shimokawa ⟨simokawa@FreeBSD.org⟩BUGS¶
This driver is currently under development.January 26, 2008 | Debian |