INT 15 - Advanced Power Management Specification - SYSTEM STAND-BY
AX = 5307h
BX = 0001h
CX = 0001h
Return: CF clear
Notes:  puts the entire system into stand-by mode; normally called in response
to a System Stand-by Request notification after any necessary
processing, but may also be invoked at the caller's discretion
should not be called from within a hardware interrupt handler to avoid
reentrance problems
the stand-by state is typically exited on an interrupt
SeeAlso: AX=5307h/BX=0001h/CX=0002h,AX=530Bh

See also: 154280

155307BX0001 - Advanced Power Management Specification - SYSTEM STAND-BY