Chapter 4
159
POST Codes Tables
These tables describe the POST codes, functions, phases, and components for the POST.
Chipset POST Codes
The following table details the chipset POST codes and functions used in the POST.
Code
Beeps
POST Routine Description
02h
Verify Real Mode
03h
Disable Non-Maskable Interrupt (NMI)
04h
Get CPU type
06h
Initialize system hardware
08h
Initialize chipset with initial POST values
09h
Set IN POST flag
0Ah
Initialize CPU registers
0Bh
Enable CPU cache
0Ch
Initialize caches to initial POST values
0Eh
Initialize I/O component
0Fh
Initialize the local bus IDE
10h
Initialize Power Management
11h
Load alternate registers with initial POST values
12h
Restore CPU control word during warm boot
13h
Initialize PCI Bus Mastering devices
14h
Initialize keyboard controller
16h
1-2-2-3
BIOS ROM checksum
17h
Initialize cache before memory autosize
18h
8254
timer initialization
1Ah
8237
DMA controller initialization
1Ch
Reset Programmable Interrupt Controller
20h
1-3-1-1
Test DRAM refresh
22h
1-3-1-3
Test 8742 Keyboard Controller
24h
Set ES segment register to 4 GB
26h
Enable A20 line
28h
Autosize DRAM
29h
Initialize POST Memory Manager
2Ah
Clear 512 KB base RAM
2Ch
1-3-4-1
RAM failure on address line xxxx*
2Eh
1-3-4-3
RAM failure on data bits xxxx* of low byte of memory bus
2Fh
Enable cache before system BIOS shadow
30h
1-4-1-1
RAM failure on data bits xxxx* of high byte of memory bus
32h
Test CPU bus-clock frequency
33h
Initialize Phoenix Dispatch Manager
36h
Warm start shut down
38h
Shadow system BIOS ROM
3Ah
Autosize cache
Содержание Aspire 5230
Страница 6: ...VI ...
Страница 14: ...4 Chapter 1 System Block Diagram ...
Страница 64: ...52 Chapter 3 6 Remove the HDD cover as shown 7 Remove the WLAN cover as shown ...
Страница 85: ...Chapter 3 73 6 Turn the upper cover over The upper cover appears as follows ...
Страница 106: ...94 Chapter 3 7 Lift the Thermal Module clear of the Mainboard ...
Страница 112: ...100 Chapter 3 6 Disconnect the left and right Inverter board cables as shown ...
Страница 126: ...114 Chapter 3 3 Replace the RJ 11 cable in its housing ...
Страница 137: ...Chapter 3 125 2 Replace the bracket as shown 3 Replace the single securing screw ...
Страница 140: ...128 Chapter 3 2 Connect the seven cables on the mainboard as shown B C D E F G A ...
Страница 146: ...134 Chapter 3 7 Replace the adhesive strip to secure the cable 8 Replace bracket and secure with provided screw ...
Страница 152: ...140 Chapter 3 ...
Страница 193: ...Chapter 6 181 ...
Страница 200: ...188 Appendix B ...
Страница 202: ...190 Appendix C ...
Страница 205: ...193 Windows 2000 Environment Test 184 Wireless Function Failure 154 WLAN Board 54 ...
Страница 206: ...194 ...