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71
2A Initialize different devices through DIM.
See “DIM code checkpoints” on page 74 for more information.
2C Initialize different devices. Detects and initializes the video adapter installed in the
system that has optional ROMs.
2E Initialize all the output devices.
31 Allocate memory for ADM module and uncompress it. Give control to ADM module
for initialization. Initialize language and font modules for ADM. Activate ADM
module.
33 Initialize the silent boot module. Set the window for displaying text information.
37 Displaying sign-on message, CPU information, setup key message, and any
OEM-specific information.
38 Initialize different devices through DIM. See “DIM code checkpoints” on page 74
for more information.
39 Initialize DMAC-1 and DMAC-2.
3A Initialize RTC date/time.
3B Test for total memory installed in the system. Also, press DEL or ESC keys to limit
memory test. Display total memory in the system.
3C Mid-POST initialization of chipset registers.
40 Detect different devices (parallel ports, serial ports, and coprocessor in CPU, and
so on) successfully installed in the system and update the BDA, EBDA, and so on.
50 Programming the memory hole or any kind of implementation that needs an
adjustment in system RAM size, if needed.
52 Updates CMOS memory size from memory found in memory test. Allocates
memory for Extended BIOS Data Area from base memory.
60 Initialize NUM-LOCK status and programs the KBD typematic rate.
75 Initialize Int-13 and prepare for IPL detection.
78 Initialize IPL devices controlled by BIOS and option ROMs.
7A Initialize remaining option ROMs.
7C Generate and write contents of ESCD in NVRam.
84 Log errors encountered during POST.
85 Display error to the user and gets the user response to error.
87 Execute BIOS setup if needed/requested.
8C Late POST initialization of chipset registers.
8D Build ACPI tables (if ACPI is supported).
8E Program the peripheral parameters. Enable/disable NMI as selected.
90 Late POST initialization of system management interrupt.
A0 Check boot password if installed.
A1 Clean-up work needed before booting to operating system.
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