Table 41 : POST Codes (Continued)
Post | Diagnostic LED Decoder |
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G=Green, R=Red, A=Amber |
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Code | Description | |||||
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MSB |
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19h | G | Off | Off | A | Init System Timer: The 8254 timer test is over. Starting the memory refresh | |
test next. | ||||||
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1Ah | G | Off | G | R | Check Refresh Toggle: The memory refresh line is toggling. Checking the | |
15 second on/off time next | ||||||
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| Setup Interrupt Vectors: Reading the 8042 input port and disabling the | |
23h | Off | Off | A | G | MEGAKEY Green PC feature next. Making the BIOS code segment writable | |
and performing any necessary configuration before initialising the interrupt | ||||||
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| vectors | |
24h | Off | G | R | Off | Before Vector: Configuration is required before interrupt vector initialisation | |
has completed. Interrupt vector initialisation is about to begin | ||||||
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25h | Off | G | R | G | Init interrupt Vectors: Interrupt vector initialisation is done. | |
F2h | R | R | A | R | Initialise SMM handler. Initialise 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. | ||||||
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12h | Off | Off | G | R | Initialising APP CMOS RAM for appliance servers only. | |
12h | Off | Off | G | R | Check point After CMOS Initialised | |
27h | Off | G | A | G | Validate date and time in RTC. | |
F4h | R | A | R | R | Load Micro Code To All CPUs | |
F6h | R | A | A | R | Scan SMBIOS GPNV areas | |
15h | Off | G | Off | A | 8254 Timer Test on Channel 2 | |
15h | Off | G | Off | A | Enable 8042 | |
15h | Off | G | Off | A | Keyboard Reset | |
26h | Off | G | A | Off | Initialise LCD, if supported. | |
28h | G | Off | R | Off | Set Video Mode: Initialisation before setting the video mode is complete. | |
Configuring the monochrome mode and color mode settings next. | ||||||
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29h | G | Off | R | G | Debugger Hook | |
2Ah | G | Off | A | Off | Init PCI devices and motherboard devices. Pass control to video BIOS. Start | |
serial console redirection. | ||||||
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2Bh | G | Off | A | G | Platform hook | |
2Dh | G | G | R | G | Initialise AMI display manager Module. Initialise support code for headless | |
system if no video controller is detected. | ||||||
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2Dh | G | G | R | G | Scan flash for logos and Initialise logo data areas | |
30h | Off | Off | R | R | Detect PS/2 Mouse | |
30h | Off | Off | R | R | Hook after c000 ROM control | |
2Eh | R | R | A | Off | Set up video parameters in BIOS data area. | |
37h | Off | G | A | A | Activate ADM: The display mode is set. Displaying the | |
next. | ||||||
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37h | Off | G | A | A | Initialise language module. Display splash logo. | |
37h | Off | G | A | A | Display Sign on message, BIOS ID and processor information. | |
38h | G | Off | R | R | Detect USB Mouse: Initialising the bus input, and general devices next, if | |
present. | ||||||
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34h | Off | G | R | R | Reset IDE Controllers | |
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| Continued | |
Viglen SX220 User Guide | 131 |
