MSI K9N2G User Guide - Page 33

D-Bracket, Connector: JDB1

Page 33 highlights

Hardware Setup D-Bracket™ 2 Connector: JDB1 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. D-Bracket™ 2 (Optional) 1 2 DBG1 DBR1 DBG2 DBR2 DBG3 DBR3 DBG4 DBR4 Key NC 9 10 Connected to USB connector Connected to JDB1 Red Green LED Signal 1 2 3 4 Description System Power ON The D-LED will hang here if the processor is damaged or not installed properly. LED Signal Description Initializing Video Interface 1 2 This will start detecting CPU clock, 3 4 checking type ofvideo onboard. Then, detect and initializethe video adapter. 1 2 EarlyChipset Initialization 3 4 BIOS Sign On 1 2 This will start showing information 3 4 about logo, processor brand name, etc... Memory Detection Test Testing Base and Extended Memory 1 2 Testing onboard memory size. The 1 2 Testing base memory from 240K to 3 D-LED will hang if the memory mod4 ule is damaged or not installed 3 4 640K and extended memory above 1MB using various patterns. properly. 1 2 Decompressing BIOS image to RAM 1 2 Assign Resources to all ISA. 3 4 for fast booting. 3 4 1 2 Initializing Keyboard Controller. 1 2 Initializing Hard Drive Controller This will initialize IDE drive and 3 4 3 4 controller. 1 2 Testing VGA BIOS 1 2 Initializing Floppy Drive Controller This will start writing VGA sign-on This will initialize Floppy Drive and 3 4 message to the screen. 3 4 controller. 1 Processor Initialization 2 This will show information regarding 1 2 BootAttempt This will set low stack and boot via 3 4 the processor (like brand name, sys- 3 4 INT 19h. tem bus, etc...) 1 2 1 2 Testing RTC (Real Time Clock) Operating System Booting 3 4 3 4 2-19

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2-19
Hardware Setup
D-Bracket
2 Connector: JDB1
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 com-
binations of LED signals.
1
9
2
10
DBG1
DBG2
DBG3
DBG4
Key
DBR1
DBR2
DBR3
DBR4
NC
BIOS Sign On
This will start showing information
about logo, processor brand name,
etc...
Testing Base and Extended Memory
Testing base memory from 240K to
640K and extended memory above
1MB using various patterns.
Assign Resources to all ISA.
Initializing Hard Drive Controller
This will initialize IDE drive and
controller.
Initializing Floppy Drive Controller
This will initialize Floppy Drive and
controller.
BootAttempt
This will set low stack and boot via
INT 19h.
Operating System Booting
System Power ON
The D-LED will hang here if the
processor is damaged or not in-
stalled properly.
Initializing Keyboard Controller.
Testing VGA BIOS
This will start writing VGA sign-on
message to the screen.
Processor Initialization
This will show information regarding
the processor (like brand name, sys-
tem bus, etc...)
Testing RTC (Real Time Clock)
Description
Red
Green
LED Signal
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
Description
LED Signal
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
1 2
3 4
Early Chipset Initialization
Memory Detection Test
Testing onboard memory size. The
D-LED will hang if the memory mod-
ule is damaged or not installed
properly.
Decompressing BIOS image to RAM
for fast booting.
Initializing Video Interface
This will start detecting CPU clock,
checking type of video onboard. Then,
detect and initialize the video adapter.
D-Bracket
2
(Optional)
Connected to JDB1
Connected to USB connector