1.\" Copyright (c) 1988, 1991 Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)dmv.4 6.2 (Berkeley) 03/27/91 7.\" 8.Dd 9.Dt DMV 4 vax 10.Os BSD 4.3 11.Sh NAME 12.Nm dmv 13.Nd 14.Tn DEC 15.Tn DMV-11 16point-to-point communications device 17.Sh SYNOPSIS 18.Cd "device dmv0 at uba0 csr 167000 vector dmvrint dmvxint" 19.Sh DESCRIPTION 20The 21.Nm dmv 22interface provides access to a point-to-point communications 23device which runs at up to 56 Kb/s. 24.Tn DMV-11 Ns s 25communicate 26using the 27.Tn DEC 28.Tn DDCMP 29link layer protocol. 30.Pp 31The host's address must be specified with an 32.Dv SIOCSIFADDR 33.Xr ioctl 2 , 34and the destination address specified with a 35.Dv SIOCSIFDSTADDR 36.Xr ioctl , 37before the interface will transmit or receive any packets. 38.Sh ROUTING 39The driver places a 40.Tn HOST 41entry in the kernel routing tables for the 42address given in the 43.Dv SIOCSIFDSTADDR 44.Xr ioctl . 45To use the 46.Tn DMV 47as a 48link between local nets, the route to the remote net must be added manually 49with the 50.Xr route 8 51command, or by the use of the routing process 52.Xr routed 8 53on each end of the link. 54.Sh DIAGNOSTICS 55.Bl -diag 56.It dmvprobe: can't start device. 57.It "dmvprobe: device init failed, bsel4=%o, bsel6=%o." 58The probe routine was unable to start the device. 59.Pp 60.It dmvinit: dmv%d not running. 61.It dmvrestart: can't start device. 62.It "dmv%d: device init failed, bsel4=%o, bsel6=%o." 63The initialization/restart routine was unable to start the device. 64.Pp 65.It dmv%d: far end on-line. 66The other end of the connection has come online. 67.Pp 68.It dmv%d: far end restart. 69The other end of the line has restarted. 70.Pp 71.It dmv%d: bad control %o. 72A bad parameter was passed to the 73.Em dmvload 74routine. 75.Pp 76.It "dmvxint: dmv%d bad rcv pkt addr 0x%x len 0x%x." 77A bad packet was received. 78.Pp 79.It "dmv%d: bad packet address 0x%x." 80An input packet was received which contained a type of 81address unknown to the driver. 82.Pp 83.It "dmvxint: dmv%d unallocated packet 0x%x." 84A protocol error has occured with the board. 85.Pp 86.It "dmvoutput, dmv%d can't handle af%d." 87A packet for an unsupported address family has been sent. 88.Pp 89.It "dmv%d: output timeout, bsel0=%b bsel2=%b." 90A device timeout occurred. 91.El 92.Pp 93Numerous other device errors may be displayed. 94.Sh SEE ALSO 95.Xr dmc 4 , 96.Xr intro 4 , 97.Xr inet 4 98.Sh HISTORY 99The 100.Nm 101driver appeared in 102.Bx 4.3 tahoe . 103