HP Kayak XU Technical Reference Manual page 72

5 Power-On Self-Test and Error Messages
Order in Which the Tests are Performed
Checkpoint
Code
2Ah Clear 512 KB base RAM
32h Test CPU bus-clock frequency
33h Initialize POST Dispatch Manager
34h Test CMOS RAM
35h Initialize alternate chipset registers
36h Warm start shutdown
37h Reinitialize the chipset (MB only)
38h Shadow system BIOS ROM
39h Reinitialize the cache (MB only)
3Ah Autosize cache
3Ch Configure advanced chipset registers
3Dh Load alternate registers with CMOS values
40h Set initial CPU speed
42h Initialize interrupt vectors
44h Initialize BIOS interrupts
45h POST device initialization
47h Initialize manager for PCI Option ROMs (Rel. 5.1 and earlier)
48h Check video configuration against CMOS
49h Initialize PCI bus and devices
4Ah Initialize all video adapters in system
4Bh Display QuietBoot screen
4Ch Shadow video BIOS ROM
4Eh Display BIOS copyright notice
50h Display CPU type
51h Initialize EISA board
64
POST Routine Description