Intel MB440LX System Installation Manual page 216

Table 10-2. Port-80 Codes (continued)
Port 80 Code
40
42
44
46
47
48
49
4A
4B
4C
4E
50
51
52
54
56
58
5A
5C
60
62
64
66
216
Reason
Set Initial CPU speed new
Initialize interrupt vectors
Initialize BIOS interrupts
Check ROM copyright notice
Initialize manager for PCI Option ROMs
Check video configuration against CMOS
Initialize PCI bus and devices
Initialize all video adapters in system
Display QuietBoot screen
Shadow video BIOS ROM
Display copyright notice
Display CPU type and speed
Initialize EISA board
Test keyboard
Set key click if enabled
Enable keyboard
Test for unexpected interrupts
Display prompt "Press F2 to enter SETUP"
Test RAM between 512 and 640k
Test extended memory
Test extended memory address lines
Jump to UserPatch1
Configure advanced cache registers
Chapter 10 Solving Problems
Continued