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Chapter 4
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 onboard clock generator if Early_Init_Onboard_Generator is defined. See
also POST 26h.
17h
Reserved
18h
Detect CPU information including brand, SMI type (Cyrix or Intel) and CPU level
(586 or 686).
19h
Reserved
1Ah
Reserved
1Bh
Initial interrupts vector table. If no special specified, all H/W 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)
20h
Reserved
21h
HPM initialization (notebook platform)
22h
Reserved
23h
1 Check validity of RTC value: e.g. a value of 5Ah is an invalid value for RTC
minute.
2 Load CMOS settings into BIOS stack. If CMOS checksum fails, use default value
instead.
24h
Prepare BIOS resource map for PCI & PnP use. If ESCD is valid, take into
consideration of the ESCD’s legacy information.
25h
Early PCI Initialization:
q
Enumerate PCI bus number
q
Assign memory & I/O resource
q
Search for a valid VGA device & VGA BIOS, and put it into C000:0
26h
1 If Early_Init_Onboard_Generator is not defined Onboard clock generator
initialization. Disable respective clock resource to empty PCI & DIMM slots.
2 Init onboard PWM
3 Init onboard H/W monitor devices
27h
Initialize INT 09 buffer
28h
Reserved
29h
1 Program CPU internal MTRR (P6 & PII) for 0-640K memory address.
2 Initialize the APIC for Pentium class CPU.
3 Program early chipset according to CMOS setup. Example: onboard IDE
controller. Measure CPU speed.
2Ah
Reserved
2Bh
Invoke Video BIOS
2Ch
Reserved
POST Code (Hex)
POST Routine Description
Содержание Aspire X1300
Страница 8: ...viii ...
Страница 16: ...8 Chapter 1 ...
Страница 51: ...Chapter 3 43 7 Pull the lever to the fully open position as shown below 8 Pull the drive out of the drive bay ...
Страница 53: ...Chapter 3 45 b Lift the bracket out of the chassis 7 Disconnect the data cable from the mainboard ...
Страница 58: ...50 Chapter 3 11 Lift the power supply module out of the chassis ...
Страница 60: ...52 Chapter 3 8 Gently pull the DIMM upward to pull it away from the chassis ...
Страница 62: ...54 Chapter 3 8 Gently pull the card to remove it from the mainboard ...
Страница 78: ...70 Chapter 4 ...
Страница 79: ...Chapter 5 71 System Block Diagram System Block Diagram and Board Layout Chapter 5 ...
Страница 82: ...74 Chapter 5 ...
Страница 84: ...76 Chapter 6 Aspire X1300 X1301 Exploded Diagram ...
Страница 94: ...86 Chapter 6 ...