Intergraph InterServe 9000 System Reference Manual page 125

Table 30. Port-80 Codes (continued)
Normal Port
80 Codes Beeps
94
95
96
98 1-2
9A
9C
9E
A0
A2
A4
A8
AA
AC
AE
B0
B2
B4 1
B5
B6
B8
BC
BE
BF
C0
DO
D4
D6
D8
DA
DC
Error
Disable A20 address line
Install CD-ROM for boot
Clear huge ES segment register
Search for option ROMs. One long, two short beeps on checksum failure
Shadow option ROMs
Set up Power Management
Enable hardware interrupts
Set time of day
Check key lock
Initialize typematic rate
Erase F2 prompt
Scan for F2 key stroke
Enter SETUP
Clear in-POST flag
Check for errors
POST done – prepare to boot Operating System
One short beep before boot
Display MultiBoot menu
Check password (optional)
Clear global descriptor table
Clear parity checkers
Clear screen (optional)
Check virus and backup reminders
Try to boot with INT 19
Interrupt handler error
Pending interrupt error
Initialize option ROM error
Shutdown error
Extended Block Move
Shutdown 10 error
125