rtc(3) plan9 man page | unix.com

RTC(3)							     Library Functions Manual							    RTC(3)

NAME
       rtc - real-time clock and non-volatile RAM

SYNOPSIS
       bind #r /dev

       /dev/rtc
       /dev/nvram

DESCRIPTION
       The rtc device supports the Mostek MK48T12-15 Zeropower/Timekeeper and similar devices with real-time clocks and non-volatile RAM.

       The rtc file behaves just like /dev/time (see cons(3)).	The real-time clock is maintained on-board; /dev/time is set from the file server.
       Neither is necessarily more accurate.

       The nvram file provides (if permission allows) access to the local non-volatile RAM.  For example, boot(8) reads  the  machine's  key  from
       there (see auth(8)).

SEE ALSO
       auth(8), boot(8)

SOURCE
       /sys/src/9/*/devrtc.c

																	    RTC(3)