IPOXUSA IP-M45A1, User Manual, Page: 73 / 80

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BIOS
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Checkpoint Description
2A
Initialize different buses and perform the following functions:
Reset, Detect, and Disable (function 0); Static Device
Initialization (function); Boot Output Device Initialization
(function 2). Function 0 disables all device nodes, PCI
devices, and PnP ISA cards. It also assigns PCI bus numbers.
Function 1 initializes all static devices that include manual
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windows in PCI-PCI bridges, and noncompliant PCI devices.
Static resources are also reserved. 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); IPL Device
Initialization (function 4); General Device Initialization (function
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and detects if system has standard keyboard controller.
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remaining PnP and PCI devices.
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
(Note)
:
3.9.4 DIM Code Checkpoints