Bios Beep Codes - Siemens SIMATIC IPC847D Operating Instructions Manual

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