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| Appendix F: Diagnostic Code Checkpoints | ||||
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| Diagnostic LED Decoder |
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Check |
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G=Green, R=Red, A+Amber | Description | ||||||
point | |||||||
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| MSB |
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| LSB |
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2C | G | G | R | OFF | Initializes different | ||
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| devices. Detects and | ||
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| initializes the video | ||
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| adapter installed in the | ||
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| system that have optional | ||
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| ROMs | ||
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2E | G | G | A | OFF | Initializes all the output | ||
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| devices | ||
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31 | OFF | OFF | R | A | Allocate memory for ADM | ||
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| module and uncompress | ||
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| it. Give control to ADM | ||
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| module for initialization. | ||
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| Initialize language and | ||
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| font modules for ADM. | ||
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| Activate ADM module. | ||
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33 | OFF | OFF | A | A | Initializes the silent boot | ||
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| module. Set the window | ||
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| for displaying text | ||
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| information. | ||
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37 | OFF | G | A | A | Displaying | ||
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| message, CPU | ||
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| information, setup key | ||
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| message, and any OEM | ||
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| specific information. | ||
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38 | G | OFF | R | R | Initializes different devices | ||
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| through DIM. See DIM | ||
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| Code Checkpoints section | ||
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| of document for more | ||
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| information. | ||
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39 | G | OFF | R | A | Initializes | ||
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3A | G | OFF | A | R | Initialize RTC date/time | ||
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