Service Guide
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Code 3Ch 3Dh 42h 45h 46h 48h 49h 4Ah 4Bh 4Ch 4Eh 50h 51h 52h 54h 58h 59h 5Ah 5Bh 5Ch 60h 62h 64h 66h 67h ... UserPatch1 Configure advanced cache registers Initialize Multi Processor APIC Enable external and CPU caches Setup System Management Mode (SMM) area Display external L2 cache size Load custom defaults (optional) Display shadow-area message Display possible high address for UMB recovery Display error messages Check for configuration errors Check for keyboard errors Set...
Code 3Ch 3Dh 42h 45h 46h 48h 49h 4Ah 4Bh 4Ch 4Eh 50h 51h 52h 54h 58h 59h 5Ah 5Bh 5Ch 60h 62h 64h 66h 67h ... UserPatch1 Configure advanced cache registers Initialize Multi Processor APIC Enable external and CPU caches Setup System Management Mode (SMM) area Display external L2 cache size Load custom defaults (optional) Display shadow-area message Display possible high address for UMB recovery Display error messages Check for configuration errors Check for keyboard errors Set...
Service Guide
Page 173
...key lock Initialize Typematic rate Erase F2 prompt Scan for F2 key stroke Enter SETUP Clear Boot flag Check for errors POST done - Code 87h 88h 89h 8Ah 8Bh 8Ch 8Fh 90h 91h 92h 93h 95h 96h 97h 98h 99h 9Ah 9Ch 9Dh 9Eh 9Fh A0h A2h ... BFh C0h C1h C2h Chapter 4 Beeps 1-2 1 POST Routine Description Configure Motherboard Configurable Devices (optional) Initialize BIOS Data Area Enable Non-Maskable Interrupts (NMIs) Initialize Extended BIOS Data Area Test and initialize PS/2 mouse Initialize floppy controller Determine number of ATA drives (optional) Initialize hard-disk controllers Initialize local...
...key lock Initialize Typematic rate Erase F2 prompt Scan for F2 key stroke Enter SETUP Clear Boot flag Check for errors POST done - Code 87h 88h 89h 8Ah 8Bh 8Ch 8Fh 90h 91h 92h 93h 95h 96h 97h 98h 99h 9Ah 9Ch 9Dh 9Eh 9Fh A0h A2h ... BFh C0h C1h C2h Chapter 4 Beeps 1-2 1 POST Routine Description Configure Motherboard Configurable Devices (optional) Initialize BIOS Data Area Enable Non-Maskable Interrupts (NMIs) Initialize Extended BIOS Data Area Test and initialize PS/2 mouse Initialize floppy controller Determine number of ATA drives (optional) Initialize hard-disk controllers Initialize local...