B-8 Sun Ultra 20 M2 Workstation Service Manual • January 2007
E8POST.ASM starts.
82h 1. Call chipset power management hook.
2. Recover the text font 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.
86h Reserved.
87h NET PC: Build SYSID Structure.
88h Reserved.
89h 1. Assign IRQs to PCI devices.
2. Set up ACPI table at top of the memory.
8Ah Reserved.
8Bh 1. Invoke all ISA adapter ROMs.
2. Invoke all PCI ROMs (except VGA).
8Ch Reserved.
8Dh 1. Enable/disable parity check according to CMOS setup.
2. APM initialization.
8Eh Reserved.
8Fh Clear noise of IRQs.
90h Reserved.
91h Reserved.
92h Reserved.
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 and display summary table.
7. Program K6 write allocation.
8. Program P6 class write combining.
TABLE B-1 BIOS Port 80 POST Codes (Continued)
Post Code Description
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