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P H 4 4 0 N L X M o t h e r b o a r d U s e r G u i d e
Code
70h
72h
74h
76h
77h
78h
79h
7Ah
7Ch
7Eh
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Eh
8Fh
90h
91h
92h
93h
95h
96h
97h
98h
99h
9Ah
9Ch
9Dh
9Eh
9Fh
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
POST Routine Description
Display error messages
Check for configuration errors
Test real- time clock
Check for keyboard errors
SMBus init devices
Initialise system monitor and check for intrusion
PCI audio init
Test for key lock on
Set up hardware interrupt vectors
Initialise coprocessor if present
Disable onboard Super I/ O ports and IRQs
Late POST device initialisation
Detect and install external RS232 ports
Configure non- MCD IDE controllers
Detect and install external parallel ports
Initialise PC- compatible PnP ISA devices
Re- initialise onboard I/ O ports.
Configure Motheboard Configurable Devices
Initialise BIOS Data Area
Enable Non- Maskable Interrupts (NMIs)
Initialise Extended BIOS Data Area
Test and initialise PS/ 2 mouse
Initialise floppy controller
Autotype
Determine number of ATA drives
Initialise hard- disk controllers
Initialise local- bus hard- disk controllers
Jump to UserPatch2
Build MPTABLE for multi- processor boards
Install CD ROM for boot
Clear huge ES segment register
Fixup Multi Processor table
Search for option ROMs. One long two short beeps on checksum failure
Check for SMART Drive
Shadow option ROMs
Set up Power Management
Security init
Enable hardware interrupts
Determine number of ATA and SCSI drives
S e p t e m b e r 1 9 9 8
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