Datasheet

Error Messages and Beep Codes

Table 42. Port 80h POST Codes (continued)

POST Code Description of POST Operation

E8POST.ASM starts

82h

1. Call chipset power management hook.

2. Recover the text used by EPA logo (not for full screen logo).

3. If password is set, ask for password.

83h Save all data in stack back to CMOS

84h Initialize ISA PnP boot devices

85h

1. USB final Initialization

2. NET PC: Build SYSID structure

3. Switch screen back to text mode

4. Set up ACPI table at top of memory

5. Invoke ISA adapter ROMs

6. Assign IRQs to PCI devices

7. Initialize APM

8. Clear noise of IRQs

93h Read hard disk drive boot sector information for Trend Anti-Virus code

94h

1. Enable L2 cache

2. Program boot up speed

3. Chipset final initialization

4. Power management final initialization

5. Clear screen and display summary table

6. Program P6 class write combining

95h

1. Program daylight savings time

2. Update keyboard LED and typematic rate

96h

1. Build MP table

2. Build and update ESCD

3. Set CMOS century to 20h or 19h

4. Load CMOS time into DOS timer tick

5. Build MSIRQ routing table

FFh Boot attempt (INT 19h)