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DCONS(4)               FreeBSD Kernel Interfaces Manual               DCONS(4)

NAME
     dcons - dumb console device driver

SYNOPSIS
     device dcons

     options DDB
     options ALT_BREAK_TO_DEBUGGER

     device firewire

DESCRIPTION
     The dcons device is the simple console device which just reads from and
     writes to an allocated buffer for input and output respectivly.  It is 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 console
     tty and other is GDB ports then each port has a input channel and a
     output channel.

EXAMPLE
     If you want to run getty(8) on dcons, insert following line into
     /etc/ttys(5) and send a HUP signal to init(8) using kill(1).

           dcons   "/usr/libexec/getty std.9600"   vt100   on  secure

     Once fwochi(4) device is initialized to allow physical access, the buffer
     can be accessed from another host via FireWire bus using dconschat(8)
     application. See dconschat(8) for more details.

FILES
     /dev/dcons
     /etc/ttys

SEE ALSO
     dcons_crom(4), ddb(4), firewire(4), fwohci(4), dconschat(8),
     fwcontrol(8), ttys(5)

AUTHORS
     Hidetoshi Shimokawa <simokawa@FreeBSD.org>

BUGS
     This driver is still under development.

FreeBSD 11.0-PRERELEASE        February 11, 2003       FreeBSD 11.0-PRERELEASE

NAME | SYNOPSIS | DESCRIPTION | EXAMPLE | FILES | SEE ALSO | AUTHORS | BUGS

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