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85
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.
A2 Take care of runtime image preparation for different BIOS modules. Fill the
free area in F000h segment with 0FFh. Initializes the Microsoft
®
IRQ
Routing Table. Prepares the runtime language module. Disables the
system configuration display, if needed.
A4 Initialize runtime language module.
A7 Display the system configuration screen, if enabled. Initialize the CPUs
before boot, including the programming of the MTRRs.
A8 Prepare CPU for operating system boot, including final MTRR values.
A9 Wait for user input at config display, if needed.
AA Uninstall POST INT1Ch vector and INT09h vector. De-initializes the ADM
module.
AB Prepare BBS in Int 19 boot.
AC End of POST initialization of chipset registers.
B1 Save system context for ACPI.
00 Pass control to OS Loader (typically INT19h).
Check
point
Description