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Appendix B3
3F-40 Reserved.
BF 1. Program the rest of the Chipset's value according to
Setup. (Later Setup Value Program)
41 2. If auto-configuration is enabled, programm the chipset
with pre-defined Values.
42 Initialize floppy disk drive controller.
43 Initialize Hard drive controller.
45 If it is a PnP BIOS, initialize serial & parallel ports.
44 Reserved.
45 Initialize math coprocessor.
46-4D Reserved.
4E If there is any error detected (such as video, kb...), show
all error messages on the screen & wait for user to press
<F1> key.
4F 1.If password is needed, ask for password.
2.Clear the Energy Star Logo. (Green BIOS only)
50 Write all CMOS values currently in the BIOS stack area
back into the CMOS.
51 Reserved.
52 1.Initialize all ISA ROMs.
2.Later PCI initializations. (PCI BIOS only)
- assign IRQ to PCI devices.
- initialize all PCI ROMs.
3.PnP Initialzations. (PnP BIOS only)
- assign IO, Memory, IRQ & DMA to PnP ISA
devices.
- initialize all PnP ISA ROMs.
4.Program shadows RAM according to Setup settings.
5.Program parity according to Setup setting.
6.Power Management Initialization.
- Enable/Disable global PM.
- APM interface initialization.
53 1.If it is NOT a PnP BIOS, initialize serial & parallel
ports.
2.Initialize time value in BIOS data area by translate the
RTC time value into a timer tick value.
60 Setup Virus Protection. (Boot Sector Protection) func-
tionality according to Setup setting.