Re: [Freedos-user] Question about FDAPM
Thanks Eric! I had noticed that FDAPM POWEROFF did both a flush and spindown, but after a couple of seconds it says "Warming up...Back...Back on..." so I wasn't quite sure what it had done. In any case, it sounds like I should be ok holding down the power button at that point. This particular laptop has a very minimal bios, at least the part I can access. On Sat, Dec 26, 2020 at 10:43 AM Eric Auer wrote: > > Hi Marv! > > FDAPM FLUSH (no slash needed) does not rely on the BIOS, > it is just meant to give caches hints to write back all > pending writes. Note that none of the caches shipping > with FreeDOS will pool or delay writes, so you actually > do not need to flush with those :-) > > As soon as the last app returns to the prompt, you can > expect that DOS has written all data and closed files. > > The flush command should work for the following caches: > msclient (not a cache, but network drives), CD Blitz, > PC-Cache, QuickCache, Super PC Kwik / QCache, SMARTDRV. > It also tells DOS and BIOS disks to reset some state. > > The latter could help to make sure that things are > written from the built-in cache of your SD card to > the permanent storage of that card. I would expect > most drives - including SSD and SD ones - to default > to not delay writes unless you enable that? And how > long would such delays be at most? Are there rules > about it? Or experiences here on the list? > You could use the SPINDOWN command to tell disks/SD > to shut down - that should give them a hint to flush > their built-in caches :-) Actually, FDAPM POWEROFF > implies flush and spindown anyway. > > Regards, Eric > > > > ___ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user > -- It's all fun and games until someone divides by zero. ___ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
Re: [Freedos-user] Question about FDAPM
Hi Marv! FDAPM FLUSH (no slash needed) does not rely on the BIOS, it is just meant to give caches hints to write back all pending writes. Note that none of the caches shipping with FreeDOS will pool or delay writes, so you actually do not need to flush with those :-) As soon as the last app returns to the prompt, you can expect that DOS has written all data and closed files. The flush command should work for the following caches: msclient (not a cache, but network drives), CD Blitz, PC-Cache, QuickCache, Super PC Kwik / QCache, SMARTDRV. It also tells DOS and BIOS disks to reset some state. The latter could help to make sure that things are written from the built-in cache of your SD card to the permanent storage of that card. I would expect most drives - including SSD and SD ones - to default to not delay writes unless you enable that? And how long would such delays be at most? Are there rules about it? Or experiences here on the list? You could use the SPINDOWN command to tell disks/SD to shut down - that should give them a hint to flush their built-in caches :-) Actually, FDAPM POWEROFF implies flush and spindown anyway. Regards, Eric ___ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
Re: [Freedos-user] Question about FDAPM suspend versus clock
Hi! 12--2004 23:03 [EMAIL PROTECTED] (Eric Auer) wrote to [EMAIL PROTECTED]: EA Hi, I got a report that FDAPM SUSPEND mode stops the timer tick clock EA (so far so good) and fails to update it to current time when waking up. EA Does that happen for you, too, or does it only happen for a few BIOSes? EA The FDAPM STANDBY mode does not stop the timer, as the CPU is not halted EA completely - but less energy is saved, too. On my (probably, not very correct machine) your FDAPM SUSPEND under plain DOS (in DOS box W98 closes DOS box because invalid instruction) stops disk and turns off monitor, but immediately after this FDAPM wakeups. EA I could add a function which updates the timer tick clock by converting EA the CMOS wall clock time to timer tick units when waking up from suspend, EA but only if it is a common problem that the tick clock stops during suspend. --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ ___ Freedos-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/freedos-user
