NEC 5800, 120Mf manual Troubleshooting, Reason

4-10 Troubleshooting

CP	Reason
44	Initialize BIOS interrupts
45	POST device initialization
46	Check ROM copyright notice
47	Initialize manager for PCI Option ROMs
48	Check video configuration against CMOS
49	Initialize PCI bus and devices
4A	Initialize all video adapters in system
4B	Display QuietBoot screen
4C	Shadow video BIOS ROM
4E	Display copyright notice
4F	Allocate memory for the multiboot data
50	Display Processor type and speed
52	Test keyboard
54	Set key click if enabled
55	USB initialization
56	Enable keyboard
58	Test for unexpected interrupts
59	Initialize the POST display service
5A	Display prompt “Press F2 to enter SETUP”
5B	Disable L1 cache during POST
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
67	Quick init of all AP's early in post
68	Enable external and processor caches
69	Initialize the SMM handler
6A	Display external cache size
6B	Load custom defaults if required
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
7C	Set up hardware interrupt vectors
7D	Intelligent system monitoring
7E	Test coprocessor if present
81	POST device initialization routine
82	Detect and install external RS232 ports
83	Configure non-MCD IDE controllers
84	Initialize parallel ports
85	Initialize PC-compatible PnP ISA devices
86	Re-initialize on board I/O ports
87	Configure Mother Board Configurable Devices
88	Initialize BIOS Data Area
89	Enable Non-Maskable Interrupts