167
| Diagnostic LED Decoder |
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Check |
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G=Green, R=Red, A+Amber | Description | |||||
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A2 | R | OFF | A | OFF | Takes care of runtime | |
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| image preparation for | |
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| different BIOS modules. | |
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| Fill the free area in F000h | |
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| segment with 0FFh. | |
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| Initializes the Microsoft | |
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| IRQ Routing Table. | |
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| Prepares the runtime | |
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| language module. | |
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| Disables the system | |
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| configuration display if | |
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| needed. | |
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A4 | R | G | R | OFF | Initialize runtime | |
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| language module. | |
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A7 | R | G | A | G | Displays the system | |
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| configuration screen if | |
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| enabled. Initialize the | |
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| CPU’s before boot, which | |
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| includes the programming | |
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| of the MTRR’s. | |
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A8 | A | OFF | R | OFF | Prepare CPU for operating | |
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| system boot including | |
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| final MTRR values. | |
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A9 | A | OFF | R | G | Wait for user input at | |
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| config display if needed. | |
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AA | A | OFF | A | OFF | Uninstall POST INT1Ch | |
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| vector and INT09h vector. | |
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| Deinitializes the ADM | |
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| module. | |
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AB | A | OFF | A | G | Prepare BBS for Int 19 | |
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| boot. | |
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AC | A | G | R | A | End of POST initialization | |
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| of chipset registers. | |
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