Technical specifications
8.6 BIOS description
SIMATIC IPC847D
188 Operating Instructions, 01/2014, A5E32997454-AA
7CH PEI_HECI_INIT HECI Initial Initialization of the Host
Embedded Controller
Service case
7DH PEI_WATCHDOG_INIT Watchdog timer initial
Initialization of the watchdog
timer
Service case
7EH PEI_MEMORY_INIT Memory Initial for Normal
boot
Memory initialization during
the PEI phase
Replace the
memory
7FH PEI_MEMORY_INIT_FOR_CRISIS Memory Initial for Crisis
Recovery
Memory initialization for
BIOS recovery
Replace the
memory
80H PEI_MEMORY_INSTALL Simple Memory test Memory test Replace the
memory
81H PEI_TXTPEI TXT function early initial Initialization of the Trusted
Service case
82H PEI_SWITCH_STACK Start to use Memory Start the memory use Service case
83H PEI_MEMORY_CALLBACK Set cache for physical
Use cache as a physical
Service case
84H PEI_ENTER_RECOVERY_MODE Recovery device initial
Initialize the device for BIOS
recovery
Service case
85H PEI_RECOVERY_MEDIA_FOUND Found Recovery image BIOS Recovery image
Service case
86H PEI_RECOVERY_MEDIA_NOT_
FOUND
Recovery image not found BIOS Recovery image not
found
Check
whether the
BIOS
Recovery
image exists
on the
recovery
medium (e.g.
87H PEI_RECOVERY_LOAD_FILE_DON
Load Recovery Image
Loading of BIOS Recovery
Service case
88H PEI_RECOVERY_START_FLASH Start Flash BIOS with
Starting of flashing of BIOS
Service case
89H PEI_ENTER_DXEIPL Loading BIOS image to
RAM
Copy BIOS image to the
RAM
Service case
8AH PEI_FINDING_DXE_CORE Loading DXE core Loading DXE (Driver
Execution Environment)
Service case
Only the following BIOS post messages are output as beep code:
● No RAM: 1 short beep long pause, cyclic, if possible
● Incorrect RAM pairing ECC/nonECC: 2 short beeps long pause, cyclic, if possible
● No Graphics Controller available: 3 long beeps, once, can be deactivated
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