HP Cc3310 UserÆs Guide and Technical UserÆs Guide - HP Carri - Page 108

Table 21. POST Code - Port 80h Codes Post Code Diagnostic LED Decoder Description MSB LSB Note: G=Green, R=Red, A=Amber 07h Off G G G Uncompress various BIOS modules. 08h G Off Off Off Verify password checksum. 08h G Off Off Off Verify CMOS checksum. 07h Off G G G Read microcode updates from BIOS ROM. 07h Off G G G Initializing the processors. Set up processor registers. Select least featured processor as the BSP. 0Bh G Off G G Hook before the keyboard BAT command is issued. 0Ch G G Off Off Keyboard Controller Test: the keyboard controller input buffer is free. Next, issuing the BAT command to the keyboard controller. Init after keyboard test: the keyboard controller BAT command result 0Eh G G G Off has been verified. Next, performing any necessary initialization after the keyboard controller BAT command test. Write Command Byte 8042: the initialization after the keyboard 0Fh G G G G controller BAT command test is done. The keyboard command byte will be written next. 10h Off Off Off R Keyboard Init: the keyboard controller command byte is written. Next, issuing the pin 23 and 24 blocking and unblocking commands 10h Off Off Off R Disable and initialize 8259. 11h Off Off Off A Detect configuration mode, such as CMOS clear. 13h Off Off G A Chipset initialization before CMOS initialization. 19h G Off Off A Init System Timer: the 8254 timer test is over. Starting the memory refresh test next. 1Ah G Off G R Check Refresh Toggle: the memory refresh line is toggling. Checking the 15 second on/off time next. 23h Off Off A Setup Interrupt Vectors: reading the 8042 input port and disabling G the MEGAKEY Green PC feature next. Making the BIOS code segment writable and performing any necessary configuration before initializing the interrupt vectors. 24h Off G R Before Vector: configuration is required before interrupt vector Off initialization has completed. Interrupt vector initialization is about to begin. 25h Off G R G Init interrupt Vectors: interrupt vector initialization is done. F2h R R A R Initialize SMM handler. Initialize USB emulation. F5h R A R A Validate NVRAM areas. Restore from backup if corrupted. 12h Off Off G R Load defaults in CMOS RAM if bad checksum or CMOS clear jumper is detected. continued 108 cc2300 Carrier Grade Server Product Guide