Acrosser AR-B1740 - Manual (Page 31)

0Ah 1. Disable PS/2 mouse interface (optional).
2. Auto detect ports for keyboard & mouse followed by a
port & interface swap (optional).
3. 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 R/W-able or not. If test fails,
keep beeping the speaker.
0Fh Reserved
10h Auto detect flash type to load appropriate flash R/W codes into 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 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:
-Enumerate PCI bus number.
-Assign memory & I/O resource
-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.
4. Measure CPU speed.
2Ah Reserved
2Bh Invoke Video BIOS
2Ch Reserved
2Dh 1. Initialize double-byte language font (Optional)
2. Put information on screen display, including Award title,
AR-B1740 User's Manual 3 1