Intel SC450NX - Server Platform - 0 MB RAM, Product Manual

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Table 30. Port-80 Codes (continued)
Normal Port
80 Codes
Beeps Error
4E Display copyright notice
50 Display processor type and speed
51 Initialize EISA board
52 Test keyboard
54 Set key click if enabled
56 Enable keyboard
58 2-2-3-1 Test for unexpected interrupts
5A Display prompt “Press F2 to enter SETUP”
5C Test RAM between 512 and 640k
60 Test extended memory
62 Test extended memory address lines
64 Jump to UserPatch1
66 Configure advanced cache registers
68 Enable external and processor caches
6A Display external cache size
6C Display shadow message
6E Display non-disposable segments
70 Display error messages
72 Check for configuration errors
74 Test real-time clock
76 Check for keyboard errors
7A Test for key lock on
74 Test real-time clock
76 Check for keyboard errors
7A Test for key lock on
7C Set up hardware interrupt vectors
7E Test coprocessor if present
80 Detect and install external RS232 ports
82 Detect and install external parallel ports
85 Initialize PC-compatible PnP ISA devices
86 Re-initialize on board I/O ports
88 Initialize BIOS Data Area
8A Initialize Extended BIOS Data Area
8C Initialize floppy controller
90 Initialize hard disk controller
91 Initialize local bus hard disk controller
92 Jump to UserPatch2
93 Build MPTABLE for multi-processor boards
continued