2.11BSD#431 - /usr/src/sys/pdp/clock.c

   1: /*
   2:  * Copyright (c) 1986 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)clock.c	1.1 (2.10BSD Berkeley) 12/1/86
   7:  */
   8: 
   9: #include "param.h"
  10: #include "clock.h"
  11: 
  12: clkstart()
  13: {
  14:     register u_short    *lks;
  15: 
  16:     lks = LKS;
  17:     if (fioword((caddr_t)lks) == -1) {
  18:         lks = KW11P_CCSR;
  19:         if (fioword((caddr_t)lks) == -1) {
  20:             printf("no clock!!");
  21:             return;
  22:         }
  23:         *KW11P_CCNT = 0;
  24:         *KW11P_CCSB = 1;
  25:         *lks = K_IENB | K_LFRATE | K_MODE | K_RUN;
  26:     }
  27:     else
  28:         *lks = K_IENB;
  29: }
  30: 
  31: #if defined(PROFILE) && !defined(ENABLE34)
  32: /*
  33:  * Profiling expects to have a KW11-P in addition to the
  34:  * line-frequency clock, and it should enter at BR7.
  35:  */
  36: isprof()
  37: {
  38:     if (fioword((caddr_t)KW11P_CCSR) == -1)
  39:         panic("no profile clock");
  40:     *KW11P_CCSB = 100;      /* count set = 100 */
  41:     *KW11P_CCSR = K_IENB | K_10KRATE | K_MODE | K_RUN;
  42: }
  43: #endif

Defined functions