Intel SE7221BK1LX Technical Manual page 84

Diagnostic LED
Decoder
G=Green, R=Red,
A=Amber
Hi
70h Off R R
72h Off R A
74h Off A R
76h Off A A
78h G R R
7Ah G R A
7Ch G A R
7Eh G A A
80h R Off Off
82h R Off G
84h R G Off
86h R G G
88h A Off Off
8Ah A Off G
8Ch A G Off
8Eh A G G
90h R Off Off
92h R Off G
94h R G Off
96h R G G
98h A Off Off
9Ah A Off G
9Ch A G Off
9Eh A G G
A0h R Off R
A2h R Off A
A4h R G R
A6h R G A
A8h A Off R
Aah A Off A
72
Description
Low
R Reset IDE Controllers
R Displaying bus initialization error messages.
Display Setup Message: The new cursor position has been read and saved.
R
Displaying the Hit Setup message next.
R Ensure Timer Keyboard Interrupts are on.
R Extended background memory test start
R Disable parity and NMI reporting.
Test 8237 DMA Controller: The DMA page register test passed. Performing the
R
DMA Controller 1 base register test next
Init 8237 DMA Controller: The DMA controller 2 base register test passed.
R
Programming DMA controllers 1 and 2 next.
Enable Mouse and Keyboard: The keyboard test has started. Clearing the
Off output buffer and checking for stuck keys. Issuing the keyboard reset command
next
Keyboard Interface Test: A keyboard reset error or stuck key was found. Issuing
Off
the keyboard controller interface test command next.
Check Stuck Key Enable Keyboard: The keyboard controller interface test
Off
completed. Writing the command byte and initializing the circular buffer next.
Disable parity NMI: The command byte was written and global data initialization
Off
has completed. Checking for a locked key next
Off Display USB devices
Verify RAM Size: Checking for a memory size mismatch with CMOS RAM data
Off
next
Off Lock out PS/2 keyboard/mouse if unattended start is enabled.
Init Boot Devices: The adapter ROM had control and has now returned control
Off to BIOS POST. Performing any required processing after the option ROM
returned control.
R Display IDE mass storage devices.
R Display USB mass storage devices.
R Report the first set of POST Errors To Error Manager.
Boot Password Check: The password was checked. Performing any required
R
programming before Setup next.
Float Processor Initialize: Performing any required initialization before the
R
coprocessor test next.
Enable Interrupts 0,1,2: Checking the extended keyboard, keyboard ID, and
R
NUM Lock key next. Issuing the keyboard ID command next
R Init FDD Devices. Report second set of POST errors To Error messager
R Extended background memory test end
Prepare And Run Setup: Error manager displays and logs POST errors. Waits
Off
for user input for certain errors. Execute setup.
Off Set Base Expansion Memory Size
Off Program chipset setup options, build ACPI Tables, build INT15h E820h table
Off Set Display Mode
Off Build SMBIOS table and MP tables.
Off Clear video screen.
SE7221BK1-E Technical Product Specification