CLOCK(4)             NetBSD/sparc Kernel Interfaces Manual            CLOCK(4)

NAME
     clock, oclock -- Clock driver for Sun SPARC computers

SYNOPSIS
     clock0 at mainbus0                # sun4c
     clock0 at obio0                   # sun4m
     clock0 at obio0 addr 0xf2000000   # sun4/300

     ooclock0 at obio0 addr 0xf3000000 # sun4/200
     ooclock0 at obio0 addr 0x03000000 # sun4/100

DESCRIPTION
     The clock device contains common timer, clock and eeprom routines for the
     NetBSD kernel.

     All system use the timer interrupt to drive the hard clock.  The second
     interrupt is used to drive statistics clock, except sun4/100 and sun4/200
     machines, which don't have a spare timer device.

HARDWARE
     The clock driver provides support for the following chips:

           Dallas DS1287A
           Intersil 7170
           Mostek Mk48T02
           Mostek Mk48T08

SEE ALSO
     sparc/timer(4)

HISTORY
     The clock appeared in NetBSD 1.0.

NetBSD 5.0_STABLE              February 24, 2006             NetBSD 5.0_STABLE
