Sun Microsystems Ultra 20 User Manual page 129

BIOS Port 80 POST Codes (Continued)
TABLE C-1
Post Code Description
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.
95h 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).
Appendix C BIOS POST Codes C-9