Gateway 9315 Gateway 9315 Server User Guide - Page 122

DIM code checkpoints 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. Checkpoint 2A 38 Description 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. 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. ACPI runtime checkpoints 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: Checkpoint Description 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. www.gateway.com 117