FreeDOS fdapm

FreeDOS
http://www.freedos.org/
http://www.freedos.org/freedos/files/
http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/dos/fdapm/
http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.0/fdboot.img

fdapm
Usage: Give FDAPM any one option from the following list.
Case is irrelevant, - or / are optional. HELP or /? shows this help.
This is free open source GPL 2 software.
Written and conceived by Eric Auer. Version: 11 Sep 2009.
INFO / STATS - show information about APM status / APMdos
APMdos - keep FDAPM in RAM, save most energy. To stop, select
APMbios/APMoff
APMbios / APMoff - turn plain BIOS APM energy saving mode on / off
SPINUP / SPINDOWN - wake up IDE disks / flush caches and stop IDE disks
VGAoff / VGAon - turn EGA/VGA/VESA DPMS screen off (no auto wake up!)
/ on
FLUSH / ZapStats - flush caches / clear STATS counters
SPEEDn - set CPU speed to n/8 of max. (0 halts until 'power' pressed).
ACPIDUMP - show ACPI data tables (to debug SPEEDn, stand-by, power off, etc)
STANDBY - flush caches, enter stand-by mode
SUSPEND - flush caches, stop (will auto wake up) IDE disks, suspend PC
POWEROFF - flush caches, stop IDE disks, power off VGA and PC
PURESUSP / PUREOFF - as SUSPEND / POWEROFF but does not stop IDE disks first
COLDboot / WARMboot - do a reboot with / without BIOS tests (POST)
HOTboot - try fast int 19h reboot (will often crash!)