Plan 9 - man page for rtc (plan9 section 3)
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rtc - real-time clock and non-volatile RAM
bind #r /dev
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)).
All times are GMT -4. The time now is 01:01 PM.