Справочник Пользователя для Intel SE7520JR2

Revision 1.0 

G=Green, R=Red, A=Amber 

8C  

A 

G 

OFF 

OFF  Late POST initialization of chipset registers.  

8D  

A 

G 

OFF 

G 

Build ACPI tables (if ACPI is supported)  

8E  

A 

G 

G 

OFF  Program the peripheral parameters. Enable/Disable NMI as selected  

90  

R 

OFF 

OFF 

R 

Late POST initialization of system management interrupt.  

A0  

R 

OFF 

R 

OFF  Check boot password if installed.  

A1  

R 

OFF 

R 

G 

Clean-up work needed before booting to operating system.  

A2  

R 

OFF 

A 

OFF 

Takes 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  

R 

G 

R 

OFF  Initialize runtime language module.  

A7  

R 

G 

A 

G 

Displays the system configuration screen if enabled. Initialize the 
CPU’s before boot, which includes the programming of the MTRR’s.  

A8  

A 

OFF 

R 

OFF  Prepare CPU for operating system boot including final MTRR values.  

A9  

A 

OFF 

R 

G 

Wait for user input at config display if needed.  

AA  

A 

OFF 

A 

OFF 

Uninstall POST INT1Ch vector and INT09h vector. Deinitializes the 
ADM module.  

AB  

A 

OFF 

A 

G 

Prepare BBS for Int 19 boot.  

AC  

A 

G 

R 

OFF  End of POST initialization of chipset registers.  

B1  

R 

OFF 

R 

A 

Save system context for ACPI.  

00 

 

OFF  OFF OFF OFF Passes 

control 

to OS Loader (typically INT19h).  

 

The Bootblock initialization code sets up the chipset, memory and other components before 
system memory is available. The following table describes the type of checkpoints that may 
occur during the bootblock initialization portion of the BIOS: 

G=Green, R=Red, A=Amber 

Before D1  

 

 

 

 

Early chipset initialization is done. Early super I/O initialization is done 
including RTC and keyboard controller. NMI is disabled.  

D1  

R 

R 

OFF 

A 

Perform keyboard controller BAT test. Check if waking up from power 
management suspend state. Save power-on CPUID value in scratch 
CMOS.  

D0  

R 

R 

OFF 

R 

Go to flat mode with 4GB limit and GA20 enabled. Verify the 
bootblock checksum.  

D2  

R 

R 

G 

R 

Disable CACHE before memory detection. Execute full memory sizing 
module. Verify that flat mode is enabled.  

D3  

R 

R 

G 

A 

If memory sizing module not executed, start memory refresh and do 
memory sizing in Bootblock code. Do additional chipset initialization. 
Re-enable CACHE. Verify that flat mode is enabled.