Diagnostic Tools
HP ProLiant DL145 Generation 2 Server Maintenance and Service Guide
3-17
Table 3-5: POST Beep Codes
continued
Code Beep Description
1Ch
Reset programmable interrupt controller
20h
1-3-1-1
Test DRAM refresh
22h
1-3-1-3
Test 8742 keyboard controller
24h
Set ES segment register to 4 GB
28h
Auto size DRAM
29h
Initialize POST Memory Manager (PMM)
2Ah
Clear 512 KB base RAM
2Ch
1-3-4-1
RAM failure on address line xxxx
2Eh
1-3-4-3
RAM failure on data bits xxxx of low byte of memory bus
2Fh
Enable cache before system BIOS shadow
32h
Test processor bus-clock frequency
33h
Initialize Phoenix Dispatch Manager
36h
Warm start shut down
38h
Shadow system BIOS ROM
3Ah
Auto size cache
3Ch
Advanced configuration of chipset registers
3Dh
Load alternate registers with CMOS values
41h
Initialize extended memory for ROM pilot
42h
Initialize interrupt vectors
45h
POST device initialization
46h
2-1-2-3
Check ROM copyright notice
47h
Initialize I20 support
48h
Check video configuration against CMOS
49h
Initialize PCI bus and devices
4Ah
Initialize all video adapters in system
4Bh
Quiet boot start (optional)
4Ch
Shadow video BIOS ROM
4Eh
Display BIOS copyright notice
4Fh
Initialize
multi-boot
50h
Display processor type and speed
51h
Initialize EISA board
52h
Test
keyboard
continued
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