Service Manual Information
039-0185-xx S
ervice Information
Use the following information when servicing instruments with serial numbers
B040000 and above or instruments using the 039-0185-xx Mother board. This
information
is only for qualified service personnel.
Table 1: 039-0185-xx μATX POST codes
Item no. Module
Displayed POST
code Description
OEM Specific-Cache control cache
Processor Status (1FLA GS) Verification
Tests the following processor status flags: Carry, zero, sign,
overflow.
The BIOS sets each flag and verifies.
The flags are set, then turns each flag off and verifies if it is off.
1
Turn Off Chipset and
CPU test
C0
Read/Write/Verify all the 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.
2MemoryPresence
C1
First block memory detect
OEM Specific-Test to size on-board m emory
Early chip set initialization
Memory presence test
OEM c hip set routines
Clear low 64K of memory
Test first 64K memory
3EarlyMemory
Initialization
C2 OEM Specific-Board Initialization
OEM Specific-Turn on extended memory
4ExtendMemoryDRAM
select
C3
Initialization
Cyrix CPU initialization
Cache initialization
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