3 rtc \- real-time clock and non-volatile RAM
13 device supports devices
14 with real-time clocks and non-volatile RAM.
18 file behaves just like
22 The real-time clock is maintained on-board;
24 is set from the file server. Neither is necessarily more accurate.
28 file provides (if permission allows)
29 access to the local non-volatile RAM.
32 reads the machine's key
40 .B /sys/src/9/*/devrtc.c