Acer Aspire Z3801, Service Manual

Page: 137 / 176

Troubleshooting
4-17
BIOS Post Codes
0
The following are the InsydeH2O™ Functionality POST code tables. The components of the
POST code table includes: SEC phase, PEI phase, DXE phase, BDS phase, CSM functions,
S3 functions and ACPI functions.
Table 4-2. POST Code Range
Phase POST Code Range
SEC 0x01 - 0x0F
PEI 0x70 - 0x9F
DXE 0x40 - 0x6F
BDS 0x10 - 0x3F
SMM 0xA0 - 0xBF
S3 0xC0 - 0xCF
ASL 0x51 – 0x55
0xE1 – 0xE4
PostBDS 0xF9 – 0xFE
Reserved 0xD8 – 0xE0
0xE5 – 0xF8
Table 4-3. SEC Phase POST Code Table
Functionality Name (Include\PostCode.h) Phase Post
Code
Description
SEC_SYSTEM_POWER_ON SEC 1 CPU power on and switch to
Protected mode
SEC_BEFORE_MICROCODE_PATCH SEC 2 Patching CPU microcode
SEC_AFTER_MICROCODE_PATCH SEC 3 Setup Cache as RAM
SEC_SETUP_CAR_OK SEC 7 Cache as RAM test
SEC_GO_TO_SECSTARTUP SEC 9 Setup BIOS ROM cache
SEC_GO_TO_PEICORE SEC 0A Enter Boot Firmware Volume
Table 4-4. PEI Phase POST Code Table
Functionality Name (Include\PostCode.h) Phase Post
Code
Description
PEI_SIO_INIT PEI 70 Super I/O Initialization
PEI_CPU_REG_INIT PEI 71 CPU Early Initialization