Intel SC450NX Product Guide - Page 132

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 132 continued