Contec SPI-8550-LLVAS, User Manual

Page: 75 / 78

7. BIOS Setup
68
SPI-8550-LLVAS
Table 7.1. POST Codes < 2 / 4 >
POST
(hex)
Description
49h Initialize PCI bus and devices
4Ah Initialize all video adapters in system
4Bh Quiet Boot start (optional)
4Ch Shadow video BIOS ROM
4Eh Display BIOS copyright notice
4Fh Initialize MultiBoot
50h Display CPU type and speed
51h Initialize EISA board
21h Test keyboard
54h Set key click if enabled
55h Enable USB devices
58h Test for unexpected interrupts
58h Initialize POST display service
5Ah Display prompt "Press F2 to enter SETUP"
5Bh Disable CPU cache
5Ch Test RAM between 512 and 640 kB
60h Test extended memory
62h Test extended memory address lines
64h Jump to UserPatch1
66h Configure 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
6Eh Display possible high address for UMB recovery
70h Display error messages
72h Check for configuration errors
76h Check for keyboard errors
7Ch Set up hardware interrupt vectors
7Dh Initialize Intelligent System Monitoring
7Eh Initialize coprocessor if present
80h Disable onboard Super I/O ports and IRQs
81h Late POST device initialization
82h Detect and install external RS232 ports
83h Configure 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 Configure Motherboard Configurable 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 floppy controller
8Fh Determine number of ATA drives (optional)