1*47674Scael.\" Copyright (c) 1983, 1991 Regents of the University of California. 2*47674Scael.\" All rights reserved. 320730Smckusick.\" 4*47674Scael.\" %sccs.include.redist.man% 520730Smckusick.\" 6*47674Scael.\" @(#)kg.4 6.2 (Berkeley) 03/27/91 7*47674Scael.\" 8*47674Scael.Dd 9*47674Scael.Dt KG 4 vax 10*47674Scael.Os BSD 4.2 11*47674Scael.Sh NAME 12*47674Scael.Nm kg 13*47674Scael.Nd 14*47674Scael.Tn KL-11 Ns / Tn DL-11W 15*47674Scaelline clock 16*47674Scael.Sh SYNOPSIS 17*47674Scael.Cd "device kg0 at uba0 csr 0176500 vector kglock" 18*47674Scael.Sh DESCRIPTION 19*47674ScaelA 20*47674Scael.Tn KL-11 21*47674Scaelor 22*47674Scael.Tn DL-11W 23*47674Scaelcan be used as an alternate real 2420730Smckusicktime clock 2520730Smckusicksource. When configured, certain system 2620730Smckusickstatistics and, optionally, system profiling work 2720730Smckusickwill be collected each time the clock interrupts. For 28*47674Scaeloptimum accuracy in profiling, the 29*47674Scael.Tn DL-11W 30*47674Scaelshould be 3120730Smckusickconfigured to interrupt at the highest possible priority 3220730Smckusicklevel. The 33*47674Scael.Nm kg 3420730Smckusickdevice driver automatically calibrates itself to the 3520730Smckusickline clock frequency. 36*47674Scael.Sh SEE ALSO 37*47674Scael.Xr kgmon 8 , 38*47674Scael.Xr config 8 39*47674Scael.Sh HISTORY 40*47674ScaelThe 41*47674Scael.Nm 42*47674Scaeldriver appeared in 43*47674Scael.Bx 4.2 . 44