User`s manual
Appendix C Trouble Shooting 
Page: C-8 
Prox-1750G1/G2 USER
′
S MANUAL 
TROUBLE SHOOTING FOR POST CODES 
The lists below indicate you the post codes. Please follow the instruction to 
adjust your system. If the error still occurred, please contact with your 
distributor for maintenance. 
CFh : 
Test CMOS R/W functionality. 
C0h : 
Early chipset initialization 
-  Disable shadow RAM 
-  Disable L2 cache (socket 7 or below) 
-  Program basic chipset registers 
C1h : 
Detect memory 
-  Auto-detection of DRAM size, type and ECC 
-  Auto-detection of L2 cache (socket 7 or below) 
C3h : 
Expand compressed BIOS code to DRAM. 
C5h : 
Call chipset hook to copy BIOS black to E000 & F000 shadow 
RAM. 
0h1 : 
Expand the Xgroup codes locating in physical address 1000:0 
02h : 
Reserved. 
03h : 
Initial Superio_Early_Init switch. 
04h : 
Reserved. 
05h : 
1. Blank out screen 
2. Clear CMOS error flag 
06h : 
Reserved 
07h : 
1. Clear 8042 interface 
2. Initialize 8042 self-test 










