
 | 
  | Appendix | 
3E  | Try to turn on Level 2 cache.  | |
  | Note: Some chipset may need to turn on the L2 cache in this stage.  | |
  | But usually, the cache is turn on later in POST 61h.  | |
Reserved.  | ||
BF  | 1.  | Program the rest of the Chipset's value according to Setup.  | 
  | (Later Setup Value Program)  | |
41  | 2.  | If   | 
  | ||
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.  | |
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) functionality  | |
  | according to Setup setting.  | |
  | 
  | |