Instruction Manual
20
94
Disable A20 address line.
96
Clear huge ES segment register.
98
Search for option ROMs.
9A
Shadow option ROMs.
9C
Setup power management.
9E
Enable hardware interrupts.
A0
Set time of day.
A2
Check key lock.
A4
Initialize typematic rate.
A8
Ease F2 prompt.
AA
Scan for F2 stroke.
AC
Enter SETUP.
AE
Clear in-POST flag.
B2
POST done - prepare to boot operating system.
B4
One beep.
B6
Check password (option).
B8
Clear global descriptor table.
BC
Clear parity checkers.
BE
Clear screen (option).
BF
Clear virus and backup remainders.
C0
Try to boot with INT 19.
D0
Interrupt handler error.
D2
Unknown interrupt error.
D4
Pending interrupt error.
D6
Initialize option ROM error.
D8
Shutdown error.