NAME
dmv —
DEC DMV-11 point-to-point serial
communications device
SYNOPSIS
dmv0 at uba0 csr 167000 vector dmvrint dmvxint
DESCRIPTION
NOTE: This driver has not been ported from
4.4BSD yet.
The
dmv interface provides access to a point-to-point
communications device which runs at up to 56 Kb/s. DMV-11s communicate using
the DEC DDCMP link layer protocol.
The host's address must be specified with an
SIOCSIFADDR
ioctl(2), and the destination
address specified with a
SIOCSIFDSTADDR
ioctl(2), before the interface
will transmit or receive any packets.
ROUTING
The driver places a HOST entry in the kernel routing tables for the address
given in the
SIOCSIFDSTADDR
ioctl(2). To use the DMV as a
link between local nets, the route to the remote net must be added manually
with the
route(8) command, or
by the use of the routing process
routed(8) on each end of the
link.
DIAGNOSTICS
- dmvprobe: can't start device.
- dmvprobe: device init failed, bsel4=%o,
bsel6=%o.
- The probe routine was unable to start the device.
- dmvinit: dmv%d not running.
- dmvrestart: can't start
device.
- dmv%d: device init failed, bsel4=%o,
bsel6=%o.
- The initialization/restart routine was unable to start the
device.
- dmv%d: far end on-line.
- The other end of the connection has come online.
- dmv%d: far end restart.
- The other end of the line has restarted.
- dmv%d: bad control %o.
- A bad parameter was passed to the
dmvload routine.
- dmvxint: dmv%d bad rcv pkt addr 0x%x
len 0x%x.
- A bad packet was received.
- dmv%d: bad packet address
0x%x.
- An input packet was received which contained a type of
address unknown to the driver.
- dmvxint: dmv%d unallocated packet
0x%x.
- A protocol error has occurred with the board.
- dmvoutput, dmv%d can't handle
af%d.
- A packet for an unsupported address family has been
sent.
- dmv%d: output timeout, bsel0=%b
bsel2=%b.
- A device timeout occurred.
Numerous other device errors may be displayed.
SEE ALSO
inet(4),
vax/dmc(4),
vax/intro(4)
HISTORY
The
dmv driver appeared in
4.3BSD-Tahoe.