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Technical specifications
8.6 BIOS description
SIMATIC IPC847D
184
Operating Instructions, 01/2014, A5E32997454-AA
8.6.7.2
BIOS beep codes
The following section lists the POST codes relevant to users in the sequence in which they
occur. Contact Customer Support (
http://www.siemens.de/automation/csi_en_WW
) for
information on all other POST codes.
Display
(hex)
Meaning
Description
Remedy
4DH
DXE_MTC_INIT
MTC Initial
MonoTonicCounter
initialization
Service case
4EH
DXE_CPU_INIT
CPU Middle Initial
CPU initialization
Replacing a
basic module
4FH
DXE_MP_CPU_INIT
Multi-processor Middle
Initial
Multiprocessor initialization Replacing a
basic module
50H
DXE_SMBUS_INIT
SMBUS Driver Initial
SMBUS driver initialization Service case
51H
DXE_SMART_TIMER_INIT
8259 Initial
SMART Timer initialization Service case
52H
DXE_PCRTC_INIT
RTC Initial
RTC initialization
Service case
53H
DXE_SATA_INIT
SATA Controller early initial Advance initialization of the
SATA Controller
Service case
54H
DXE_SMM_CONTROLER_INIT
Setup SMM Control service,
DXE_SMMControler_INIT
SSM Control service
Service case
55H
DXE_LEGACY_INTERRUPT
Setup Legacy Interrupt
service,
DXE_LegacyInterrupt
Setup Legacy Interrupt
service
Service case
01H
SEC_SYSTEM_POWER_ON
CPU power on and switch
to Protected mode
Switch to Protected Mode
Service case
02H
SEC_BEFORE_MICROCODE_PAT
CH
Patching CPU microcode
Load CPU Microcode
Service case
03H
SEC_AFTER_MICROCODE_PATCH Setup Cache as RAM
Set up cache as RAM
Service case
04H
SEC_ACCESS_CSR
PCIE MMIO Base Address
initial
Initialize PCIE
Service case
05H
SEC_GENERIC_MSRINIT
CPU Generic MSR initial
Initialize CPU MS (Machine
Status) Register
Service case
06H
SEC_CPU_SPEEDCFG
Setup CPU speed
Specify CPU speed
Service case
07H
SEC_SETUP_CAR_OK
Cache as RAM test
Carry out RAM Test on
cache
Replacing a
basic module
08H
SEC_FORCE_MAX_RATIO
Tune CPU frequency ratio
to maximum level
Setting CPU frequency
Service case
09H
SEC_GO_TO_SECSTARTUP
Setup BIOS ROM cache
Set up BIOS ROM cache
Service case
0AH
SEC_GO_TO_PEICORE
Enter Boot Firmware
Volume
Calling up the boot firmware
memory area
Service case
70H
PEI_SIO_INIT
Super I/O initial
Initialization of the Super I/O Service case
71H
PEI_CPU_REG_INIT
CPU Early Initial
Initialize CPU Register
Service case
72H
PEI_CPU_AP_INIT
Multi-processor Early initial Multi processor initialization Service case
73H
PEI_CPU_HT_RESET
HyperTransport initial
Initialize Hyper Transport
functionality
Service case
74H
PEI_PCIE_MMIO_INIT
PCIE MMIO BAR Initial
Initialize PCIE Register
Service case
75H
PEI_NB_REG_INIT
North Bridge Early Initial
Initialization of the North
bridge
Service case