102 |
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| 6 Technical Reference | |
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| Diagnostic LED Decoder |
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G=Green,R=Red,A=Amber | Description |
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Code |
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| MSB |
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| LSB |
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12h | Off | Off | G | R | Load defaults in CMOS RAM if | |
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| bad checksum or CMOS clear | |
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| jumper is detected. | |
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12h | Off | Off | G | R | Initializing APP CMOS RAM for | |
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| appliance servers only. | |
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12h | Off | Off | G | R | Check point After CMOS | |
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| Initialized. | |
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27h | Off | G | A | G | Validate date and time in RTC. | |
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F4h | R | A | R | R | Load Micro Code To All CPUs. | |
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F6h | R | A | A | R | Scan SMBIOS GPNV areas. | |
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15h | Off | G | Off | A | 8254 Timer Test on Channel 2. | |
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15h | Off | G | Off | A | Enable 8042. | |
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15h | Off | G | Off | A | Keyboard Reset. | |
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26h | Off | G | A | Off | Initialize LCD, if supported. | |
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28h | G | Off | R | Off | Set Video Mode: Initialization | |
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| before setting the video mode is | |
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| complete. Configuring the | |
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| monochrome mode and color | |
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| mode settings next. | |
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29h | G | Off | R | G | Debugger Hook. | |
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2Ah | G | Off | A | Off | Init PCI devices and | |
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| motherboard devices. Pass | |
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| control to video BIOS. Start serial | |
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| console redirection. | |
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2Bh | G | Off | A | G | Platform hook. | |
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