Gateway 7450R User Manual
Troubleshooting
91
84h
Detect and install external parallel ports
85h
Initialize PC-compatible PnP ISA devices
86h
Re-initialize onboard I/O ports
87h
Configure mainboard configurable devices (optional)
88h
Initialize BIOS data area
89h
Enable non-maskable interrupts
8Ah
Initialize extended BIOS data area
8Bh
Test and initialize PS/2 mouse
8Ch
Initialize diskette controller
8Fh
Determine number of ATA drives (optional)
90h
Initialize hard drive controllers
91h
Initialize local-bus hard drive 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
Fix multi-processor table
98h
1-2
Search for option ROMs. Beeps on checksum failure
99h
Check for SMART drive (optional)
9Ah
Shadow option ROMs
9Ch
Set up power management
9Dh
Initialize security engine (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 keystroke
ACh
Enter SETUP
AEh
Clear boot flag
B0h
Check for errors
Test
Point
Point
Beep
Code
Code
POST Routine Description
* If the BIOS detects error 2C or 2E, it displays an additional word-bitmap (xxxx) indicating
the address line or bits that failed. For example, “2C 0002” means address line 1 (bit one
set) has failed. “2E 1020” means data bits 12 and 5 (bits 12 and 5 set) have failed in the
lower 16 bits.
the address line or bits that failed. For example, “2C 0002” means address line 1 (bit one
set) has failed. “2E 1020” means data bits 12 and 5 (bits 12 and 5 set) have failed in the
lower 16 bits.
8507328.book Page 91 Thursday, February 15, 2001 11:28 AM