Hi Marcos, thanks for the in-depth measurements :-)
> 1 FDAPM APMDOS + IDLEHALT=1 11 sec > 2 FDAPM ADV:REG + IDLEHALT=1 6 sec > 3 FDAPM APMDOS 6 sec > 4 IDLEHALT=1 6 sec > 5 FDAPM ADV:REG about half a sec > 6 (nothing) about half a sec > I adopted option 5 to work with Desi-III, of course. I agree that this is the best option. To answer your questions: IDLEHALT is in the kernel, you do not have to load it. You only activate it or not. FDAPM is more advanced, but takes a bit of DOS memory. The ADV:REG option usually saves almost as much of your battery power as the normal APMDOS option. You do not get extra savings by combining FDAPM and IDLEHALT, only slowness ;-) You do not need to standby or suspend DOS - just shutdown the PC when you do not need it and reboot it when you need it again, a DOS system usually boots very quickly. However, FDAPM does have support for APM BIOS standby and suspend. Whether it actually will work and wake up properly depends on the BIOS. If you get stuck, you can always keep the power button of your PC pressed for several seconds to force a power-off or power-on. Newer BIOSes do not support any APM. They only support ACPI. For ACPI, FDAPM gives you throttling (SPEED1 to SPEED8) and poweroff but no actually useful standby or suspend options... Throttling means that your CPU will be halted up to 7/8 of the time, which is also a nice thing for playing too fast old DOS games :-). It is also possible to suspend other components with DOS PCISLEEP. Note that all the throttling and suspending stuff does not save much more energy than FDAPM APMDOS on a typical desktop PC if DOS is just waiting for input at the prompt. I also made a tool for AMD "Cool n Quiet" to switch my CPU to 1 GHz and lower voltage, but this only works for the CPU and mainboard for which you compile it. For automatic setup for generic PC, the tool would be complex and I was lazy... ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
