User`s guide

C-19
Error Messages and Recovery Information
IA–32
POST Codes
Meaning
Note that there
will be 15–bit
post codes in
this area.
These indicate
Device Initiali-
zation Manager
sub–codes.
The convention for the DIM POST codes is as follows:
Port 80 = 0x84
Port 81 = DIM Function number | DI number
0x0085 Display error messages.
Display F1/F2 message if bad CMOS Wait for F1/F2 or <DEL> key press.
Determine whether setup can be executed according to POST flag.
Load CMOS and GPNV default values if F2 was pressed and go to check-
point 0x0089.
If F1 or <DEL> pressed, go to Setup (checkpoint 0x0086).
Determine if user wants and is permitted to enter setup (Check password 3
times in valid CMOS) and force display back to BIOS.
Set up printer values to allow Print Screen to work in setup.
Reset the mouse if a USB mouse is present.
Next, checkpoint 0x0089 if not going to setup.
0x0086 Perform OEM necessary programming before CMOS SETUP.
Next, checkpoint 0x0087.
0x0087 Uncompress and run CMOS SETUP program if POST diagnostics dis-
abled.
Skip Setup if POST diagnostics enabled.
If Setup saved, then reboot, else readjust display mode and display wait
message.
Next, checkpoint 0x0088.
0x0088 Perform OEM necessary programming after CMOS SETUP.
Next, checkpoint 0x0089.
0x0089 Check if KB locked, if so reboot, else enable BIOS POST display or OEM
logo, whichever selected.
Display “WAIT” message.
Next, checkpoint 0x008B.
0x008B De–allocate HHF (Hardware Health) memory if enabled. Initialize boot de-
vice priority order.
Next, checkpoint 0x008C.
0x008C Perform any chipset or OEM initialization after CMOS setup even if not exe-
cuted. Several items initialized are the INT15 E820 table, chipset and I/O
setup parameters.
Next, checkpoint 0x008D.
0x008D Call optional OEM patch.
Set printer and RS232 time–out values in BIOS data area.
Next, checkpoint 0x0095.
0x0095 Check and load unattended password.
Restore display from silent mode to BIOS. Initialize the boot device order
and associated variables.
Next, checkpoint 8Eh.