172 Maintaining and Troubleshooting the Gateway ALR 9200 Server
70
Display error messages
72
Check for configuration errors
74
Test real-time clock
76
Check for keyboard errors
7A
Test for key lock on
7C
Set up hardware interrupt vectors
7E
Test coprocessor if present
80
Detect and install external RS232 ports
82
Detect and install external parallel ports
85
Initialize PC-compatible PnP ISA devices
86
Re-initialize on board I/O ports
88
Initialize BIOS Data Area
8A
Initialize Extended BIOS Data Area
8C
Initialize floppy controller
90
Initialize hard disk controller
91
Initialize local bus hard disk controller
92
Jump to UserPatch2
93
Build MPTABLE for multi-processor boards
94
Disable A20 address line
95
Install CD-ROM for boot
96
Clear huge ES segment register
98
1-2
Search for option ROMs. One long, two short beeps on checksum failure
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
1
One short beep before boot
B5
Display MultiBoot menu
B6
Check password (optional)
B8
Clear global descriptor table
BC
Clear parity checkers
BE
Clear screen (optional)
Table 34: Port-80h Codes and Beep Codes (Continued)
Port-80
Codes
Beep
Codes
Error Descriptions
3424.boo Page 172 Wednesday, September 2, 1998 9:23 AM