Appendix B: BIOS POST Codes
B-3
POST Code Description
5Ch
Test RAM between 512 and 640 kB
60h
Test extended memory
62h
Test extended memory address lines
64h
Jump to UserPatch1
66h
Confi gure advanced cache registers
67h
Initialize Multi Processor APIC
68h
Enable external and CPU caches
69h
Setup System Management Mode (SMM) area
6Ah
Display external L2 cache size
6Bh
Load custom defaults (optional)
6Ch
Display shadow-area message
70h
Display error messages
72h
Check for confi guration errors
76h
Check for keyboard errors
7Ch
Set up hardware interrupt vectors
7Dh
Initialize Intelligent System Monitoring (optional)
7Eh
Initialize coprocessor if present
80h
Disable onboard Super I/O ports and IRQs (optional)
81h
Late
POST
device
initialization
82h
Detect and install external RS232 ports
83h
Confi gure non-MCD IDE controllers
84h
Detect and install external parallel ports
85h
Initialize PC-compatible PnP ISA devices
86h
Re-initialize onboard I/O ports.
87h
Confi gure Motherboard Confi gurable Devices (optional)
88h
Initialize BIOS Data Area
89h
Enable Non-Maskable Interrupts (NMIs)
8Ah
Initialize Extended BIOS Data Area
8Bh
Test and initialize PS/2 mouse
8Ch
Initialize fl oppy controller
8Fh
Determine number of ATA drives (optional)
90h
Initialize hard-disk controllers
91h
Initialize local-bus hard-disk controllers
92h
Jump to UserPatch2
93h
Build MPTABLE for multi-processor boards
95h
Install CD ROM for boot
96h
Clear huge ES segment register
97h
Fix up Multi Processor table
98h
1-2 Search for option ROMs and shadow if successful. One
long, two short beeps on checksum failure
Содержание SuperWorkstation 7045A-WT
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