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6 Tests and Error Messages
Order in Which POST Tests Are Performed
84h Detect and install external parallel ports
85h Initialize PC-compatible PnP ISA devices
86h Re-initialize onboard I/O ports
87h Configure System Board Configurable Devices (optional)
88h Initialize BIOS Data Area
89h Enable Non-Maskable Interrupts (NMIs)
8Ah Initialize Extended BIOS Data Area
8Bh Test and initialize PS/2 Mouse PS2 Test
8Ch Initialize floppy controller
8Fh Determine number of ATA drives (optional)
90h Initialize hard disk controllers Disc Ctrl. Init.
91h Initialize local-bus hard disk controllers Disc Bus Init.
92h Jump to UsersPatch2 Maxilife Test
93h Build MPTABLE for multi-processor boards
95h Install CD-ROM for boot CDROM Ctr. Init.
96h Clear huge ES segment register
97h Fix up Multi Processor table
98h Search for option ROMs. Opt. Rom Detect.
99h Check for SMART drive
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 Check ATA / SCSI
A0h Set time of day
Checkpoint
Code
POST Routine Description
MaxiLife LCD
Display
Message
Beep
Codes