mcclock(4) - NetBSD Manual Pages

MCCLOCK(4)              NetBSD Kernel Interfaces Manual             MCCLOCK(4)


NAME

     mcclock -- MC146816, DS1287, and compatibles real-time clock


SYNOPSIS

   algor
     mcclock* at isa? port 0x70

   alpha
     mcclock* at gbus? offset ?
     mcclock* at ioasic? offset ?
     mcclock* at isa? port 0x70
     mcclock* at jensenio? port ?

   arc
     mcclock* at jazzio?

   cobalt
     mcclock0 at mainbus? addr 0x10000070

   evbmips
     mcclock* at isa? port 0x70

   pmax
     mcclock* at ibus0 addr ?
     mcclock* at ioasic? offset ?

   sgimips
     mcclock* at mace0 offset 0x3a0000

   shark
     mcclock* at ofisa?

   sparc64
     rtc* at ebus?


DESCRIPTION

     The mcclock driver provides support for the MC146818, DS1287 and compati-
     bles real-time clock (RTC).  Note, that the kernel expects the RTC to run
     in UTC.


SEE ALSO

     intro(4), ebus(4), ioasic(4), isa(4)

NetBSD 11.99                     June 19, 2026                    NetBSD 11.99