Appendix II: Post Error Code for BIOS
64 A26361-D1691-Z120-1-7619, Edition 1
E8POST.ASM starts Description
82h: 1. Call chipset power management hook.
2. Recover the text fond 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. Switch screen back to text mode
87h: NET PC: Build SYSID Structure.
89h:
1. Assign IRQs to PCI devices
2. Set up ACPI table at top of the memory.
8Bh:
1. Invoke all ISA adapter ROMs
2. Invoke all PCI ROMs (except VGA)
8Dh:
1. Enable/Disable Parity Check according to CMOS setup
2. APM Initialization
8Fh:
Clear noise of IRQs
93h:
Read HDD boot sector information for Trend Anti-Virus code
94h:
1. Enable L2 cache
2. Program Daylight Saving
3. Program boot up speed
4. Chipset final initialization.
5. Power management final initialization
6. Clear screen & display summary table
7. Program K6 write allocation
8. Program P6 class write combining
95h:
Update keyboard LED & typematic rate
96h:
1. Build MP table
2. Build & 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)
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