B-6 Sun Ultra 20 M2 Workstation Service Manual • January 2007
51h Reserved.
52h Test all memory (clear all extended memory to 0).
53h Clear the password according to H/W jumper (optional).
54h Reserved.
55h Display the number of processors (multiprocessor platform).
56h Reserved.
57h 1. Display PnP logo.
2. Early ISA PnP initialization. Assign CSN to every ISA PnP device.
58h Reserved.
59h Initialize the combined Trend Anti-Virus code.
5Ah Reserved.
5Bh (Optional feature) Show message for entering AWDFLASH.EXE
from FDD.
5Ch Reserved.
5Dh 1. Initialize Init_Onboard_Super_IO.
2. Initialize Init_Onbaord_AUDIO.
5Eh Reserved.
5Fh Reserved.
60h Okay to enter setup utility; users cannot enter the CMOS setup
utility until this POST stage.
61h Reserved.
62h Reserved.
63h Reset keyboard if Early_Reset_KB is not defined.
64h Reserved.
65h Initialize PS/2 Mouse.
66h Reserved.
67h Prepare memory size information for function call:
INT 15h ax=E820h.
68h Reserved.
69h Turn on L2 cache.
6Ah Reserved.
TABLE B-1 BIOS Port 80 POST Codes (Continued)
Post Code Description
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