BIOS Post Codes

BIOS

 

 

Post Code Description

85Initialize PC compatible PnP ISA devices

86Reinitialize onboard I/O ports

87Configure motherboard configurable devices (optional)

88Initialize BIOS data area

89Enable non−maskable interrupts (NMI’s)

8A

Initialize extended BIOS data area

8B

Test and initialize PS/2 mouse

8C

Initialize floppy controller

8F

Determine number of ATA drives (optional)

90Initialize hard disk controllers

91Initialize local bus hard disk controllers

92Jump to UserPatch2

93Build MPTABLE for multi processor boards

95Install CD ROM for boot

96Clear huge ES segment register

97Fixup multi processor table

98Search for option ROM’s

99Check for SMART drive (optional)

9A

Shadow option ROM’s

9C

Set up power management

9D

Initialize security engine (optional)

9E

Enable hardware interrupts

9F

Determine number of ATA and SCSI drives

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 boot flag

PENT/ATCA−717

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Motorola ATCA-717 manual Bios