Gateway 9315 User Manual

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The Device Initialization Manager (DIM) gets control at various times during BIOS POST 
to initialize different system buses. The following table describes the main checkpoints 
where the DIM module is accessed.

ACPI checkpoints are displayed when an ACPI-capable operating system either enters or 
leaves a sleep state. The following table describes the types of checkpoints that may occur 
during ACPI sleep or wake events:

2A

Initialize different buses and perform the following 
functions: 

■

Reset, Detect, and Disable (function 0) — Disables all 
device nodes, PCI devices, and PnP ISA cards. It also 
assigns PCI bus numbers.

■

Static Device Initialization (function 1) — Initializes all 
static devices that include manual configured onboard 
peripherals, memory and I/O decode windows in 
PCI-PCI bridges, and noncompliant PCI devices. Static 
resources are also reserved.

■

Boot Output Device Initialization (function 2) — 
Searches for and initializes any PnP, PCI, or AGP video 
devices.

38

Initialize different buses and perform the following 
functions:

■

Boot Input Device INitialization (function 3) — 
Searches for and configures PCI input devices and 
detects if system has standard keyboard controller.

■

IPL Device Initialization (function 4) — Searches for 
and configures all PnP and PCI boot devices.

■

General Device Initialization (function 5) — Configures 
all onboard peripherals that are set to an automatic 
configuration and configures all remaining PnP and 
PCI devices.

AC

First ASL checkpoint. Indicates that the system is 
running in ACPI mode.

AA

System is running in APIC mode.

01, 02, 03, 04, 05

Entering sleep state S1, S2, S3, S4, or S5.

10, 20, 30, 40, 50

Waking from sleep state S1, S2, S3, S4, or S5.