ECM-5510

40. POST Codes

Please take reference to Phoenix-Award website for the latest post codes.

http://www.phoenix.com/en/Customer+Services/BIOS/AwardBIOS/Award+Error+Codes.ht m

40.1Normal POST Code

Note: EISA POST codes are typically output to port address 300h. ISA POST codes are output to

port address 80h.

Code (hex)

Name

Description

C0

Turn Off Chipset and

OEM Specific-Cache control cache

 

CPU test

Processor Status (1FLAGS) Verification. Tests the following

 

 

processor status flags: Carry, zero, sign, overflow, the BIOS sets

 

 

each flag, verifies They are set, then turns each flag off and

 

 

verifies it is off.

 

 

Read/Write/Verify all CPU registers except SS, SP, and BP with

 

 

data pattern FF and 00. RAM must be periodically refreshed to

 

 

keep the memory from decaying. This function ensures that the

 

 

memory refresh function is working properly.

 

 

 

C1

Memory Presence

First block memory detect OEM Specific-Test to size on-board

 

 

memory. Early chip set initialization Memory presence test OEM

 

 

chip set routines clear low 64K of memory Test first 64K memory.

 

 

 

C2

Early Memory

OEM Specific- Board Initialization

 

Initialization

 

 

 

 

C3

Extend Memory DRAM

OEM Specific- Turn on extended memory Initialization

 

select

Cyrix CPU initialization, Cache initialization

 

 

 

C4

Special Display

OEM Specific- Display/Video Switch handling so that switch

 

Handling

handling display switch errors never occurs

 

 

 

C5

Early Shadow

OEM specific- Early shadow enable for fast boot

 

 

 

C6

Cache presence test

External cache size detection

 

 

 

CF

CMOS Check

CMOS checkup

 

 

 

B0

Spurious

If interrupt occurs in protected mode.

 

 

 

B1

Unclaimed NMI

If unmasked NMI occurs, display Press F1 to disable NMI, F2

 

 

reboot.

 

 

 

BF

Program Chip Set

To program chipset from defaults values

 

 

 

E1-EF

Setup Pages

E1- Page 1, E2 - Page 2, etc.

 

 

 

1

Force load Default to

Chipset defaults program

 

chipset

 

 

 

 

2

Reserved

 

 

 

 

102 ECM-5510 User’s Manual