Diagnostic Tools
3-16
HP ProLiant DL145 Generation 2 Server Maintenance and Service Guide
The routine derives the beep code from the test point error as follows:
1.
The 8-bit error code is broken down to four 2-bit groups (Discard the most significant
group if it is 00).
2.
Each group is made one-based (1 through 4) by adding 1.
3.
Short beeps are generated for the number in each group.
Example:
Test point 01Ah = 00 01 10 10 = 1-2-3-3 beeps
Table 3-5 lists the checkpoint codes written at the start of each test and the beep codes issued
for terminal errors.
Table 3-5: POST Beep Codes
Code Beep Description
02h
Verify real mode
03h
Disable non-maskable interrupts
04h
Get
processor
type
06h
Initialize system hardware
07h
Disable shadow and execute code from the ROM
08h
Initialize chipset with initial POST values
09h
Set IN POST flag
0Ah
Initialize processor registers
0Bh
Enable processor cache
0Ch
Initialize caches to initial POST values
0Eh
Initialize I/O component
0Fh
Initialize the local bus IDE
10h
Initialize power management
11h
Load
alternate
registers
with initial POST values
12h
Restore processor control word during warm boot
13h
Initialize PCI bus mastering devices
14h
Initialize keyboard controller
16h
1-2-2-3
BIOS ROM checksum
17h
Initialize cache before memory auto size
18h
8254 timer initialization
1Ah
8237 DMA controller initialization
continued
All manuals and user guides at all-guides.com
