Technical data

Troubleshooting
3–8
Digital HiNote VP 500 Service Guide
Code
Beeps
POST Routine Description
92
Jump to UserPatch2
94
Disable A20 address line
96
Clear huge ES segment register
98
Search for option ROMs
9A
Shadow option ROMs
9C
Set up Power Management
9E
Enable hardware interrupts
A0
Set time of day
A2
Check key lock
A4
Initialize typematic rate
A8
Erase F2 prompt
AA
Scan for F2 key stroke
AC
Enter SETUP
AE
Clear in-POST flag
B0
Check for errors
B2
POST done-prepare to boot operating system
B4
One beep
B6
Check password (optional)
B8
Clear global descriptor table
BC
Clear parity checkers
BE
Clear screen (optional)
BF
Check virus and backup reminders
C0
Try to boot with INT 19
DO
Interrupt handler error
D2
Unknown interrupt error
D4
Pending interrupt error
D6
Initialize option ROM error
D8
Shutdown error
DA
Extended Block Move
DC
Shutdown 10 error
E2
Initialize the chipset
E3
Initialize refresh counter
E4
Check for Forced Flash
E5
Check HW status of ROM
E6
BIOS ROM is OK
E7
Do a complete RAM test
E8
Do OEM initialization
E9
Initialize interrupt controller
EA
Read in the bootstrap code
EB
Initialize all vectors
EC
Boot the Flash program
ED
Initialize the boot device
EE
Boot code was read OK