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Diagnostic LED decoder
point
G=Green, R=Red, O=Orange
52
Off
R
60
Off
R
75
Off
O
78
G
R
7A
G
R
7C
G
O
84
R
G
85
R
G
87
R
G
8C
O
G
8D
O
G
8E
O
G
90
R
Off
A0
R
Off
A1
R
Off
A2
R
Off
A4
R
G
A7
R
G
A8
O
Off
A9
O
Off
AA
O
Off
130
Description
G
R
Update CMOS memory size from memory found in memory test.
Allocates memory for Extended BIOS Data Area from base
memory.
R
Off
Initialize NUM-LOCK status and programs the KBD typematic
rate.
R
O
Initialize Int-13 and prepare for IPL detection.
R
R
Initialize IPL devices controlled by BIOS and option ROMs.
O
R
Initialize remaining option ROMs.
R
R
Generate and write contents of ESCD in NVRam.
Off
Off
Log errors encountered during POST.
Off
G
Display error to the user and gets the user response to error.
G
G
Execute BIOS setup if needed/requested.
Off
Off
Late POST initialization of chipset registers.
Off
G
Build ACPI tables (if ACPI is supported).
G
Off
Program the peripheral parameters. Enable/disable NMI as
selected.
Off
R
Late POST initialization of system management interrupt.
R
Off
Check boot password if installed.
R
G
Clean-up work needed before booting to operating system.
O
Off
Take care of runtime image preparation for different BIOS
modules. Fill the free area in F000h segment with 0FFh.
Initializes the Microsoft
runtime language module. Disables the system configuration
display, if needed.
R
Off
Initialize runtime language module.
O
G
Display the system configuration screen, if enabled. Initialize the
CPUs before boot, including the programming of the MTRRs.
R
Off
Prepare CPU for operating system boot, including final MTRR
values.
R
G
Wait for user input at config display, if needed.
O
Off
Uninstall POST INT1Ch vector and INT09h vector. De-initializes
the ADM module.
www.gateway.com
®
IRQ Routing Table. Prepares the
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Troubleshooting
