The only time there is any exposure is during a write operation. When the processor board is used to run the 5370, how often is data written and what is the exposure interval?
I would be willing to bet that Linux already has a power-fail NMI input. I would bet that you can find out what the worst-case PF NMI latency is and then ensure that the PS output stays up at least that long without having to worry about a battery or "super cap". (I bet PF latency is under 1ms.) In that case, all you need to do is assert the PF interrupt line. Hmm, check to see if it is already there and based on nothing more than sagging Vcc/Vdd. I bet it is and therefore this whole discussion may be moot. But the idea of making the boot partition RO and the /var partition R/W makes a whole lot of sense to me. -- Brian Lloyd, WB6RQN/J79BPL 706 Flightline Drive Spring Branch, TX 78070 br...@lloyd.com +1.916.877.5067 _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
