1-4 POST Errors / Beep Codes
1 Specifications
1-5
S820/S850
Error Codes
Beep Codes
Meaning
02
1-1-1-3
Verify Real Mode
04
1-1-2-1
Get CPU type
06
1-1-2-3
Initialize system hardware
07
1-1-2-4
Disable system ROM shadow
08
1-1-3-1
Initialize chipset registers with initial POST values
09
1-1-3-2
Set in POST flag
0A
1-1-3-3
Initialize CPU registers
0C
1-1-4-1
Initialize cache to initial POST values
0E
1-1-4-3
Initialize I/O
0F
1-1-4-4
Initialize the local bus IDE
10
1-2-1-1
Initialize Power Management
11
1-2-1-2
Load alternate registers with initial POST values
12
1-2-1-3
Restore CR0 after CPU is reset
14
1-2-2-1
Initialize keyboard controller
16
1-2-2-3
BIOS ROM checksum
17
1-2-2-4
Init external cache before memory autosize
18
1-2-3-1
8254 timer initialization
1A
1-2-3-3
8237 DMA controller initialization
1C
1-2-4-1
Reset Programmable Interrupt Controller
20
1-3-1-1
Test DRAM refresh
22
1-3-1-3
Test 8742 Keyboard Controller
24
1-3-2-1
Set ES segment register to 4 GB
28
1-3-3-1
Autosize DRAM
29
1-3-3-2
Initializes the POST memory manager
2A
1-3-3-3
Clear 512K base RAM
2C
1-3-4-1
Test 512K base address lines
2E
1-3-4-3
Test 512K base memory
32
1-4-1-3
Test CPU bus-clock frequency
33
1-4-1-4
Initializes the Phoenix dispatch manager
34
1-4-2-1
Test CMOS RAM
35
1-4-2-2
Initialize alternate chipset registers
37
1-4-2-4
Reinitialize the chipset (MB only)
38
1-4-3-1
Shadow system BIOS ROM
39
1-4-3-2
Reinitialize the cache (MB only)
3A
1-4-3-3
Autosize cache
3C
1-4-4-1
Configure advanced chipset registers
3D
1-4-4-2
Load alternate registers with CMOS values
40
2-1-1-1
Set initial CPU speed
41
2-1-1-2
ROM pilot initialization (Null Feature)
42
2-1-1-3
Initialize interrupt vectors
44
2-1-2-1
Initialize BIOS interrupts
46
2-1-2-3
Check ROM copyright notice
47
2-1-2-4
Initialize I2O(intelligent IO)
48
2-1-3-1
Check video configuration against CMOS
49
2-1-3-2
Initialize PCI bus and devices
4A
2-1-3-3
Initialize all video adapters in system
4B
2-1-3-4
Initialize quiet boot
4C
2-1-4-1
Shadow video BIOS ROM
4E
2-1-4-3
Display copyright notice
4F
2-1-4-4
Allocate memory for the multiboot data
