TYAN S5221 User Manual page 51

Code Beeps / Description
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
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 Devices
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)
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 Fixup Multi Processor table
98h 1-2. Search for option ROMs.
99h Check for SMART Drive
(optional)
9Ah Shadow option ROMs
9Ch Set up Power Management
9Dh Initialize security engine
(optional)
9Eh Enable hardware interrupts
9Fh Determine number of ATA and
SCSI drives
A0h Set time of day
Code
A2h Check key lock
A4h Initialize Typematic rate
A8h Erase F2 prompt
AAh Scan for F2 key stroke
ACh Enter SETUP
AEh Clear Boot flag
B0h Check for errors
B2h POST done - prepare to boot
operating system
B4h One short beep before boot
B5h Terminate QuietBoot (optional)
B6h Check password (optional)
B9h Prepare Boot
BAh Initialize DMI parameters
BBh Initialize PnP Option ROMs
BCh Clear parity checkers
BDh Display MultiBoot menu
BEh Clear screen (optional)
BFh Check virus and backup
reminders
C0h Try to boot with INT 19
C1h Initialize POST Error Manager
(PEM)
C2h Initialize error logging
C3h Initialize error display function
C4h Initialize system error handler
C5h PnPnd dual CMOS (optional)
C6h Initialize notebook docking
(optional)
C7h Initialize notebook docking late
C8h Force check (optional)
C9h Extended checksum (optional)
D2h BIOS Boot Block
E0h BIOS Boot Block
E1h BIOS Boot Block
E2h Initialize the CPU
E3h Initialize system timer
E4h Initialize system I/O
E5h Check force recovery boot
E6h Checksum BIOS ROM
E7h Go to BIOS
E8h Set Huge Segment
51
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Beeps / Description