1.\" Copyright (c) 1986, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)de.4 8.1 (Berkeley) 06/05/93 7.\" 8.Dd 9.Dt DE 4 vax 10.Os BSD 4.2 11.Sh NAME 12.Nm de 13.Nd 14.Tn DEC DEUNA 1510 Mb/s Ethernet interface 16.Sh SYNOPSIS 17.Cd "device de0 at uba0 csr 174510 vector deintr" 18.Sh DESCRIPTION 19The 20.Nm de 21interface provides access to a 10 Mb/s Ethernet network through 22a Digital Equipment 23.Tn UNIBUS 24Network Adapter 25.Pq Tn DEUNA . 26.Pp 27Each of the host's network addresses 28is specified at boot time with an 29.Dv SIOCSIFADDR 30.Xr ioctl 2 . 31The 32.Nm de 33interface employs the address resolution protocol described in 34.Xr arp 4 35to dynamically map between Internet and Ethernet addresses on the local 36network. 37.Pp 38The interface normally tries to use a 39.Dq trailer 40encapsulation 41to minimize copying data on input and output. 42The use of trailers is negotiated with 43.Tn ARP . 44This negotiation may be disabled, on a per-interface basis, 45by setting the 46.Dv IFF_NOTRAILERS 47flag with an 48.Dv SIOCSIFFLAGS 49.Xr ioctl . 50.Sh DIAGNOSTICS 51.Bl -diag 52.It de%d: hardware address %s. 53This is a normal autoconfiguration message noting the 6 byte physical 54ethernet address of the adapter. 55.Pp 56.It de%d: oerror, flags=%b tdrerr=%b (len=%d). 57The hardware indicated an error 58in transmitting a packet to the cable. 59The status and error flags are reported. 60.Pp 61.It de%d: ierror, flags=%b lenerr=%b (len=%d). 62The hardware indicated an error 63in reading a packet from the cable. 64The status and error flags are reported. 65.Pp 66.It de%d: can't handle af%d. 67The interface was handed 68a message with addresses formatted in an unsuitable address 69family; the packet was dropped. 70.Pp 71.It de%d: buffer unavailable. 72The interface received more packets 73than it had buffers allocated to receive them. 74.Pp 75.It de%d: address change failed, csr0=%b csr1=%b. 76The interface was unable to reprogram 77its physical ethernet address. 78This may happen with very early models of the interface. 79This facility is used only when 80the controller is not the first network interface configured for 81.Tn XNS . 82.El 83.Pp 84The following messages indicate a probable hardware error performing 85the indicated operation during autoconfiguration or initialization. 86The two control and status registers 87should indicate the nature of the failure. 88See the hardware manual for details. 89.Pp 90.Bl -diag 91.It de%d: reset failed, csr0=%b csr1=%b. 92.It de%d: ppcb failed, csr0=%b csr1=%b. 93.It de%d: read addr failed, csr0=%b csr1=%b. 94.It de%d: wtring failed, csr0=%b csr1=%b. 95.It de%d: wtmode failed, csr0=%b csr1=%b. 96.El 97.Sh SEE ALSO 98.Xr netintro 4 , 99.Xr inet 4 , 100.Xr arp 4 101.Sh HISTORY 102The 103.Nm 104driver appeared in 105.Bx 4.3 . 106