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BIOS
3.15 Award BIOS POST Codes
CFh | Test CMOS read/write functionality |
C0h | Early chipset initialization: Disable shadow RAM, L2 cache (socket 7 |
and below), program basic chipset registers | |
C1h | Detect memory: Auto detection of DRAM size, type and ECC, auto |
detection of L2 cache (socket 7 and below) | |
C3h | Expand compressed BIOS code to DRAM |
C5h | Call chipset hook to copy BIOS back to E000 & F000 shadow RAM |
01h | Expand the Xgroup codes located in physical memory address 1000:0 |
02h | Reserved |
03h | Initial Superio_Early_Init switch |
04h | Reserved |
05h | %O QNRXWVFUHHQ&OH U&026HUURUÀ J |
06h | Reserved |
07h | Clear 8042 interface; Initialize 8042 self test |
08h | Test special keyboard controller for Winbond 977 series Super I/O |
chips; Enable keyboard interface | |
09h | Reserved |
| Disable PS/2 mouse interface (optional); Auto detect ports for |
0Ah | keyboard & mouse followed by a port & interface swap (optional); |
| Reset keyboard for Winbond 977 series Super I/O chips |
0Bh | Reserved |
0Ch | Reserved |
0Dh | Reserved |
0Eh | Test F000h segment shadow to see whether it is read/write capable or |
not. If test fails, keep beeping the speaker | |
0Fh | Reserved |
10h | $XWRGHWHFWÀ VKW\SHWROR G SSURSUL WHÀ VKUH GZULWHFRGHVLQWR |
| the run time area in F000 for ESCD & DMI support |
11h | Reserved |
12h | Use walking 1’s algorithm to check out interface in CMOS circuitry. |
Also set real time clock power status and then check for override | |
13h | Reserved |
14h | Program chipset default values into chipset. Chipset default values |
are MODBINable by OEM customers | |
15h | Reserved |
16h | Initial Early_Init_Onboard_Generator switch |
17h | Reserved |
18h | Detect CPU information including brand, SMI type (Cyrix or Intel) and |
CPU level (586 or 686) | |
19h | Reserved |
1Ah | Reserved |
| Initial interrupts vector table. ,IQRVSHFL OVSHFL¿HG OO+: |
1Bh | interrupts are directed to SPURIOUS_INT_HDLR & S/W interrupts to |
| SPURIOUS_soft_HDLR |
1Ch | Reserved |
1Dh | Initial EARLY_PM_INIT switch |
1Eh | Reserved |
1Fh | Load keyboard matrix (notebook platform) |
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