DIM Code Checkpoints
| Checkpoint | Description |
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| 2A | Initialize different buses and perform the following functions: Reset, Detect, and Disable |
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| (function 0); Static Device Initialization (function 1); Boot Output Device Initialization |
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| (function 2). Function 0 disables all device nodes, PCI devices, and PnP ISA cards. It also |
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| assigns PCI bus numbers. Function 1 initializes all static devices that include manual |
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| configured onboard peripherals, memory and I/O decode windows in |
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| noncompliant PCI devices. Static resources are also reserved. Function 2 searches for |
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| and initializes any PnP, PCI, or AGP video devices. |
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| 38 | Initialize different buses and perform the following functions: Boot Input Device Initialization |
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| (function 3); IPL Device Initialization (function 4); General Device Initialization (function 5). |
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| Function 3 searches for and configures PCI input devices and detects if system has |
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| standard keyboard controller. Function 4 searches for and configures all PnP and PCI boot |
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| devices. Function 5 configures all onboard peripherals that are set to an automatic |
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| configuration and configures all remaining PnP and PCI devices. |
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ACPI Runtime Checkpoints | ||
Checkpoint | Description |
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AC | First ASL check point. Indicates the system is running in ACPI mode. |
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AA | System is running in APIC mode |
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01, 02, 03, 04, | Entering sleep state S1, S2, S3, S4, or S5. |
05 |
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10, 20, 30, 40, | Waking from sleep state S1, S2, S3, S4, or S5 |
50 |
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45 | Chapter 4 |
