| Beep Codes |
| POST Description |
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| Load alternate registers with initial POST values |
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| Restore CPU control word during warm boot |
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| Initialize PCI Bus Mastering devices |
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| Initialize keyboard controller |
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| BIOS ROM checksum |
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| Initialize cache before memory Auto size |
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| 8254 timer initialization |
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| 8237 DMA controller initialization |
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| Reset Programmable Interrupt Controller |
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| Test DRAM refresh |
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| Test 8742 Keyboard Controller (on motherboard) |
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| Set ES segment register to 4 GB |
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| Auto size DRAM; or wrong type or no RAM installed |
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| Initialize POST Memory Manager |
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| Clear 512 KB base RAM |
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| RAM failure on address line xxxx |
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| RAM failure on data bits xxxx of low byte of memory bus |
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| Enable cache before system BIOS shadow |
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| RAM failure on data bits xxxx of high byte of memory bus |
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| Test CPU |
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| Initialize Phoenix Dispatch Manager |
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| Warm start shut down |
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| Shadow system BIOS ROM |
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| Auto size cache |
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| Advanced configuration of chipset registers |
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| Load alternate registers with CMOS values |
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| Initialize extended memory for ROMPilot |
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| Initialize interrupt vectors |
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| POST device initialization |
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| Check ROM copyright notice |
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| Initialize I20 support |
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| Check video configuration against CMOS |
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| Initialize PCI bus and devices |
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| Initialize all video adapters in system |
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| QuietBoot start (optional) |
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| Shadow video BIOS ROM |
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| Display BIOS copyright notice |
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Service Manual |
| Troubleshooting and Diagnostics |