Teknor Industrial Computers PCI-934, Техническое справочное руководство

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PCI-934 Technical Reference Manual
E-6
POST
(hex)
Name Description
0B Test CMOS RAM Checksum 1. Verify time and date for valid values.
2. If Override enabled, check for Override key.
If Override key pressed, Kill CMOS checksum.
3. Check CMOS Battery (useless if save CMOS in FLASH
enabled since it’s already done).
4. Verify Checksum, if bad, load defaults.
5. Copy CMOS in the stack.
6. Clear CMOS Alarm date.
7. Clear HD if Hidden.
8. Clear Floppy "B" if only one drive.
9. Detect for a Math Co-processor.
10. Set Fast Gate A20 Flag in CMOS.
11. If "B" drive only is set the 2 Drive are set…
12. Program Chipset for early Power Management.
13. P6 Bios Update (if applicable).
14. Kill Onboard PnP IO.
15. PnP Early Initialization.
16. PnP System Resource:
1. Get ESCD.
2. Create default SYSTEM_MAP.
3. Decode/Record ISA ESCD resources.
4. Record I/O port for PnP operation.
17. Chipset Early Shadow.
0C Initialize Keyboard 1. Open Xilinx I/O Port
location to x90h (X=1,2 or
3) inside the chipset (if
necessary).
2. Disable (if necessary).
Thermal Management.
3. Disable (if necessary)
Ethernet Chip.Set IDE
Detect counter to 0.
4. Set CD-ROM found
variable to 0.
5. Initialize zone 40:0h for the
keyboard buffer.
Boot Block 1
st
: Verify BIOS
checksum.
Boot Block in EMERGENCY 2
nd
: Init. vector 00h through 77h