2-18
Chapter 2
(14). POST Code Display
This is an LED device to display the “
POST
” Code, the acronym of
P
ower
O
n
S
elf
T
est. The computer
will execute the POST action whenever you power on the computer. The POST process is controlled by
the BIOS. It is used to detect the status of the computer’s main components and peripherals. Each POST
Code corresponds to different checkpoints that are also defined by the BIOS in advance. For example,
“memory presence test” is an important checkpoint and its POST Code is “C1”. When the BIOS execute
any POST item, it will write the corresponding POST Code into the address 80h. If the POST passes, the
BIOS will process the next POST item and write the next POST Code into the address 80h. If the POST
fails, we can check the POST Code in address 80h to find out where the problem lies.
This LED device also displays the “POST” Code of AC2003, an “uGuru” chipset developed exclusively
by ABIT computer.
NOTE:
The decimal point lights up when executing the AC2003 POST action.
See Appendix for both AWARD and AC2003 POST Code definition.
AI7/AI7-G
Summary of Contents for AB-AI7
Page 1: ...AI7 AI7 G Socket 478 System Board User s Manual 4200 0392 03 Rev 1 01 ...
Page 5: ...1 User s Manual ...
Page 18: ...14 AI7 AI7 G ...
Page 21: ...Introduction 1 3 1 2 Layout Diagram User s Manual ...
Page 22: ...1 4 Chapter 1 1 4 Chapter 1 AI7 AI7 G AI7 AI7 G ...
Page 68: ...3 26 Chapter 3 3 26 Chapter 3 AI7 AI7 G AI7 AI7 G ...
Page 70: ...A 2 Appendix A A 2 Appendix A AI7 AI7 G AI7 AI7 G ...
Page 76: ...C 2 Appendix C C 2 Appendix C AI7 AI7 G AI7 AI7 G ...
Page 78: ...D 2 Appendix D AI7 AI7 G ...
Page 80: ...E 2 Appendix E E 2 Appendix E AI7 AI7 G AI7 AI7 G ...
Page 82: ...F 2 Appendix F F 2 Appendix F AI7 AI7 G AI7 AI7 G ...
Page 88: ...G 6 Appendix G G 6 Appendix G AI7 AI7 G AI7 AI7 G ...