TYAN THUNDER I7522 Manual page 55

Thunder i7520 / Thunder i75 20 R
Code Beeps / Description
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
devices
86h. Re- initialize onboard I/O ports.
87h Configure Motherboard Devices
88h Initialize BIOS Data Area
89h Enable Non -Maskable
(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
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 engi ne (optional)
9Eh Enable hardware interrupts
9Fh Determine number of ATA and SCSI
drives
A0h Set time of day
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
operating system
B4h One short beep before boot
B5h Terminate QuietBoot (optional)
B6h Check password (optional)
B9h Prepare Boot
Appendix II: Post Error C o d e for BIOS
Code Beeps / Description
BCh Clear parity checkers
BDh Dis play MultiBoot menu
BEh Clear screen (optional)
BFh Check virus and backup reminders
PnP ISA C0h Try to boot with INT 19
C1h Initialize POST Error Manager (PEM)
C2h Initialize error logging
C3h Initialize error display function
Interrupts 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)
hard -disk D2h Unknown interrupt
E0h Initialize the chipset
E1h Initialize the bridge
E2h Initialize the CPU
E3h Initialize system timer
E4h Initialize sy stem I/O
E5h Check force recovery boot
E6h Checksum BIOS ROM
E7h Go to BIOS
E8h Set Huge Segment
E9h Initialize Multi Processor
EAh Initialize OEM special code
EBh Initialize PIC and DMA
ECh Initialize Memory type
ED h Initialize Memory size
EEh Shadow Boot Block
EFh System memory test
F0h Initialize interrupt vectors
F1h Initialize Run Time Clock
F2h Initialize video
F3h Initialize System Management M ode
to boot F4h Output one beep before boot
F5h Boot to Mini DOS
F6h Clear Huge Segment
F7h Boot to Full DOS
52
http://www. tyan.com