1*47674Scael.\" Copyright (c) 1983, 1991 Regents of the University of California. 2*47674Scael.\" All rights reserved. 320736Smckusick.\" 4*47674Scael.\" %sccs.include.redist.man% 520736Smckusick.\" 6*47674Scael.\" @(#)pcl.4 6.3 (Berkeley) 03/27/91 7*47674Scael.\" 8*47674Scael.Dd 9*47674Scael.Dt PCL 4 vax 10*47674Scael.Os BSD 4.2 11*47674Scael.Sh NAME 12*47674Scael.Nm pcl 13*47674Scael.Nd 14*47674Scael.Tn DEC CSS 15*47674Scael.Tn PCL-11 B 16*47674ScaelNetwork Interface 17*47674Scael.Sh SYNOPSIS 18*47674Scael.Cd "device pcl0 at uba? csr 164200 vector pclxint pclrint" 19*47674Scael.Sh DESCRIPTION 2020736SmckusickThe 21*47674Scael.Nm pcl 22*47674Scaeldevice provides an 23*47674Scael.Tn IP Ns -only 24*47674Scaelinterface to the 25*47674Scael.Tn DEC CSS 26*47674Scael.Tn PCL-11 2720736Smckusicktime division multiplexed network bus. 2820736SmckusickThe controller itself is not accessible to users. 29*47674Scael.Pp 30*47674ScaelThe hosts's address is specified with the 31*47674Scael.Dv SIOCSIFADDR 32*47674Scael.Xr ioctl 2 . 3320736SmckusickThe interface will not transmit or receive any data before 3420736Smckusickits address is defined. 35*47674Scael.Pp 36*47674ScaelAs the 37*47674Scael.Tn PCL-11 38*47674Scaelhardware is only capable of having 15 interfaces per network, 3920736Smckusicka single-byte host-on-network number is used, with range [1..15] to match 40*47674Scaelthe 41*47674Scael.Tn TDM 42*47674Scaelbus addresses of the interfaces. 43*47674Scael.Pp 4420736SmckusickThe interface currently only supports the Internet protocol family 45*47674Scaeland only provides 46*47674Scael.Dq natural 47*47674Scael(header) encapsulation. 48*47674Scael.Sh DIAGNOSTICS 49*47674Scael.Bl -diag 50*47674Scael.It pcl%d: can't init. 51*47674ScaelInsufficient 52*47674Scael.Tn UNIBUS 53*47674Scaelresources existed to initialize the device. 5420736SmckusickThis is likely to occur when the device is run on a buffered 5520736Smckusickdata path on an 11/750 and other network interfaces are also 5620736Smckusickconfigured to use buffered data paths, or when it is configured 5720736Smckusickto use buffered data paths on an 11/730 (which has none). 58*47674Scael.Pp 59*47674Scael.It pcl%d: can't handle af%d. 6020736SmckusickThe interface was handed a message with addresses formatted in an 6120736Smckusickunsuitable address family; the packet was dropped. 62*47674Scael.Pp 63*47674Scael.It pcl%d: stray xmit interrupt. 6428333SanneAn interrupt occurred when no output had previously been started. 65*47674Scael.Pp 66*47674Scael.It pcl%d: master. 67*47674ScaelThe 68*47674Scael.Tn TDM 69*47674Scaelbus had no station providing ``bus master'' timing signals, 7020736Smckusickso this interface has assumed the ``master'' role. This message should 71*47674Scaelonly appear at most once per 72*47674Scael.Tn UNIBUS INIT 73*47674Scaelon a single system. 7420736SmckusickUnless there is a hardware failure, only one station may be master at at time. 75*47674Scael.Pp 76*47674Scael.It pcl%d: send error, tcr=%b, tsr=%b. 7720736SmckusickThe device indicated a problem sending data on output. 7820736SmckusickIf a ``receiver offline'' error is detected, it is not normally logged 79*47674Scaelunless the option 80*47674Scael.Dv PCL_TESTING 81*47674Scaelhas been selected, as this causes a lot 8220736Smckusickof console chatter when sending to a down machine. However, this option 83*47674Scaelis quite useful when debugging problems with the 84*47674Scael.Tn PCL 85*47674Scaelinterfaces. 86*47674Scael.Pp 87*47674Scael.It pcl%d: rcv error, rcr=%b rsr=%b. 8820736SmckusickThe device indicated a problem receiving data on input. 89*47674Scael.Pp 90*47674Scael.It pcl%d: bad len=%d. 9120736SmckusickAn input operation resulted in a data transfer of less than 9220736Smckusick0 or more than 1008 bytes of 9320736Smckusickdata into memory (according to the word count register). 94*47674ScaelThis should never happen as the maximum size of a 95*47674Scael.Tn PCL 96*47674Scaelmessage 9720736Smckusickhas been agreed upon to be 1008 bytes (same as ArpaNet message). 98*47674Scael.El 99*47674Scael.Sh SEE ALSO 100*47674Scael.Xr intro 4 , 101*47674Scael.Xr inet 4 102*47674Scael.Sh HISTORY 103*47674ScaelThe 104*47674Scael.Nm 105*47674Scaelinterface appeared in 106*47674Scael.Bx 4.2 . 107