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OESF Forums > Distros, Development, and Model Specific Forums > Model Specific Forums > Cxx0 Hardware
richie
Hi

Does anyone know how the Cx00 series holds the date and time between shutdown's or battery changes? I know the SL5500 used a ni-cad with limited charge/discharges cycles, 100 cycles only if I remember rightly and I'm interested to know if the Cx00 relies on a ni-cad or super cap.

thanks
Rich
craigtyson
They dont have anything other than the main battery + flash memory. While its possable to shutdown a 5500, swap the battery and power on without rebooting or losing any open files, with the C series this is not possable.
richie
QUOTE(craigtyson @ Jul 20 2005, 08:30 PM)
They dont have anything other than the main battery + flash memory.  While its possable to shutdown a 5500, swap the battery and power on without rebooting or losing any open files, with the C series this is not possable.
*


There is nothing to even hold the time and date?

cheers
Rich
mikew
It appears to remember the date/time that you pulled the battery, looks as if it adds a couple of minutes to this & offers this as the default as part of the boot up process.

Mike
Bundabrg
QUOTE(richie @ Jul 21 2005, 08:01 AM)
QUOTE(craigtyson @ Jul 20 2005, 08:30 PM)
They dont have anything other than the main battery + flash memory.  While its possable to shutdown a 5500, swap the battery and power on without rebooting or losing any open files, with the C series this is not possable.
*


There is nothing to even hold the time and date?

cheers
Rich
*



Somehow it holds the time somewhere. It does this through the use of 'sltime'. You call 'sltime-set' to set the time, and 'sltime' to retrieve the time.
I've got it set to call 'sltime -set' on suspend, shutdown, and 'sltime' in one of the startup scripts. As my Z hardly crashes, and when it doesn I quickly restart, I don't tend to lose time.

Still, it would be nice if it had a hardware RTC.

- Bundabrg
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