MSI P4M890M2 Serie Mode D'emploi page 22

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M S-7255 M ainboard
19
D-Bracket™ 2 Connector
This connector is for you to connect to the D-Bracket™2 which integrates four LEDs and
USB ports. It allows users to identify system problems through 16 various combinations
of LED signals.
1 2
DBG1 DBR1
DBR2
DBG2
DBR3
DBG3
DBR4
DBG4
NC
Key
9 10
Red
Green
Description
LED Signal
System Power ON
1 2
The D-LED will hang here if the
processor is damaged or not in-
3 4
stalled properly.
1 2
Early Chipset Initialization
3 4
Memory Detection T est
Testing onboard memory size. The
1 2
D-LED will hang if the memory mod-
3 4
ule is damaged or not installed
properly.
1 2 Decompressing BIOS image to RAM
for fast booting.
3 4
1 2
Initializing Keyboard Controller.
3 4
Testing VGA BIOS
1 2
This will start writing VGA sign-on
3 4
message to the screen.
Processor Initialization
1 2
This will show information regarding
3 4 the processor (like brand name, sys-
tem bus, etc...)
1 2
Testing RTC (Real Time Clock)
3 4
En-14
Connected to USB connector
LED Signal
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
D-Bracket™ 2
(Optional)
Connected to D-
Bracket 2 connector
Description
Initializing Video Interface
2
This will start detecting CPU clock,
checking type of video onboard. Then,
4
detect and initialize the video adapter.
BIOS Sign On
2
This will start showing information
about logo, processor brand name,
4
etc...
Testing Base and Extended Memory
2
Testing base memory from 240K to
640K and extended memory above
4
1MB using various patterns.
2
Assign Resources to all ISA.
4
Initializing Hard Drive Controller
2
This will initialize IDE drive and
4
controller.
Initializing Floppy Drive Controller
2
This will initialize Floppy Drive and
4
controller.
Boot Attempt
2
This will set low stack and boot via
4
INT 19h.
2
Operating System Booting
4