HP VXI Pentium Series Hardware Installation And Configuration Manual page 71

68 POST Beep Codes
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Table F-1. Phoenix NuBIOS Checkpoint Codes (continued)
Beep POST
Code Code
1Ch Reset Programmable Interrupt Controller
1-3-1-1 20h Test DRAM refresh
1-3-1-3 22h Test 8742 Keyboard Controller
24h Set ES segment to register to 4GB
28h Autosize DRAM
2Ah Clear 512KB base RAM
1-3-4-1 2Ch Test 512KB base address lines
1-3-4-3 2Eh Test 512KB base memory
32h Test CPU bus-clock frequency
37h Reinitialize the chipset
38h Shadow system BIOS ROM
39h Reinitialize the cache
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
2-1-2-3 46h Check ROM copyright notice
47h Initialize manager for PCI Option ROMs
48h Check video configuration against CMOS
49h Initialize PCI bus and devices
4Ah Initialize all video adapters in system
4Ch Shadow video BIOS ROM
4Eh Display copyright notice
50h Display CPU type and speed
52h Test keyboard
54h Set key click if enabled
56h Enable keyboard
2-2-3-1 58h Test for unexpected interrupts
Checkpoint Description
Appendix F