Chapter 22 Solving Problems: Troubleshooting/Error Messages
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Port 80h Codes (continued)
CP Beeps Reason
37 Reinitialize the chip set (MB only)
38 Shadow system BI OS ROM
39 Reinitialize the cache (MB only)
3A Autosize cache
3C Configure advanced chip set registers
3D Load alternate registers with new CMOS values
40 Set initial new processor speed
42 Initialize interrupt vectors
44 Initialize BIOS interrupts
46 2-1-2-3 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
50 Display processor type and speed
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 nondisposable 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
7E Test coprocessor if present
continued