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SE7221BK1-E Technical Product Specification
Revision 1.3
66
Diagnostic LED
Decoder
G=Green, R=Red,
A=Amber
Hi Low
Description
34h Off G R R
Keyboard Init: The keyboard controller command byte is written. Next, issuing
the pin 23 and 24 blocking and unblocking commands
36h Off G A R Disable and initialize 8259
38h G Off R R Detect Configuration Mode, such as CMOS clear.
3Ah G Off A R Chipset Initialization before CMOS initialization
3Ch G G R R
Init System Timer: The 8254 timer test is over. Starting the legacy memory
refresh test next.
3Eh G G A R
Check Refresh Toggle: The memory refresh line is toggling. Checking the 15
second on/off time next
40h Off R Off Off Calculate CPU speed
42h Off R G Off Init interrupt Vectors: Interrupt vector initialization is done.
44h Off A Off Off Enable USB controller in chipset
46h Off A G Off Initialize SMM handler. Initialize USB emulation.
48h G R Off Off Validate NVRAM areas. Restore from backup if corrupted.
4Ah G R G Off
Load defaults in CMOS RAM if bad checksum or CMOS clear jumper is
detected.
4Ch G A Off Off Validate date and time in RTC.
4Eh G A G Off Determine number of micro code patches present
50h Off R Off R Load Micro Code To All CPUs
52h Off R G R Scan SMBIOS GPNV areas
54h Off A Off R Early extended memory tests
56h Off A G R Disable DMA
58h G R Off R Disable video controller
5Ah G R G R 8254 Timer Test on Channel 2
5Ch G A Off R
Enable 8042. Enable timer and keyboard IRQs. Set Video Mode: Initialization
before setting the video mode is complete. Configuring the monochrome mode
and color mode settings next.
5Eh G A G R
Init PCI devices and motherboard devices. Pass control to video BIOS. Start
serial console redirection.
60h Off R R Off Initialize memory test parameters
62h Off R A Off
Initialize AMI display manager Module. Initialize support code for headless
system if no video controller is detected.
64h Off A R Off Start USB controllers in chipset
66h Off A A Off Set up video parameters in BIOS data area.
68h G R R Off Activate ADM: The display mode is set. Displaying the power-on message next.
6Ah G R A Off Initialize language module. Display splash logo.
6Ch G A R Off
Display Sign on message, BIOS ID and processor information.
6Eh G A A Off Detect USB devices
70h Off R R R Reset IDE Controllers
72h Off R A R Displaying bus initialization error messages.
74h Off A R R
Display Setup Message: The new cursor position has been read and saved.
Displaying the Hit Setup message next.
76h Off A A R Ensure Timer Keyboard Interrupts are on.