IBM CI5VGM Series - Manual (Page 60)

Chapter 3 BIOS Configuration
56 CI5VGM User’s Manual
Suspend Mode
When enabled, and after the set time of system inactivity, all devices
except the CPU will be shut off.
PM Events
The VGA, LPT & COM, HDD & FDD, DMA/master, PWR-ON by
Modem/LAN, RTC Alarm Resume, and Primary INTR sections are I/O
events which can prevent the system from entering a power saving mode
or can awaken the system from such a mode. When an I/O device wants
to gain the attention of the operating system, it signals this by causing an
IRQ to occur. When the operating system is ready to respond to the
request, it interrupts itself and performs the service. When set to ON,
activity will neither prevent the system from going into a power
management mode nor awaken it. The IRQ section sets the wake-up call
of the system. If activity is detected from any enabled IRQ channels in the
left-hand group, the system wakes up from Suspend Mode.