Endura RADISYS KP915GV - Manual (Page 16)

KP915GV Product Manual
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Recover Mode (No jumper) With no jumper installed on pins 1, 3, and 5 recovery mode is entered.
The motherboard does not boot and waits until a valid recovery diskette is
detected and then copies new BIOS into the ROM. The motherboard must be
powered down and then re-powered with the jumper in the normal position before
normal operation can resume.
CPLD Write Enabled (Jumper between pins 2 & 4) In this position the contents of the CPLD can
be reprogrammed.
CPLD Write Protected (Jumper between pins 4 & 6) This is the factory default position. In this
position, or with no jumper on pins 2, 4, and 6, the contents of the CPLD are
protected from reprogramming.
1.4.2 BIOS Boot Block Write Protection Jumper (JP2)
(Jumper between pins 1 & 2) This is the factory default position. A jumper installed in this position.
or no jumper installed, enables changes to contents of BIOS ROM boot block (unlocked position).
Some motherboard applications may want to have boot block write-protected BIOS. This can be
provided via the BIOS boot block write protection jumper. If a jumper is installed between pins 2 &
3 (locked position), the contents of BIOS ROM boot block cannot be changed in any way.
1.4.3 Clear CMOS Jumper (JP1)
(Jumper between pins 2 & 3) This is the factory default position. Either this position or no jumper
installed, is the normal operating configuration. Installing a jumper between pins 1 & 2 clears
(resets) the CMOS.
1.4.4 Front Panel Connections
The primary controls and indicators for the motherboard are connected via the front panel
connector using either a single ribbon cable to a ‘front panel’ assembly, or using a number of small
PC-standard connectors. The functions are described below. See appendix B for the connector pin-
out information.
Power LED
Connects either a single-color LED (usually green) or a two-terminal bi-color LED (usually
green/yellow) to indicate the powered status of the motherboard. In both cases, the ‘green’ anode
should be attached to pin 2 of the front panel connector. Refer to the Enhanced Power
Management LED portion in section 3.3.4.4 of this document for further information.
Power Switch
If the motherboard is used with a soft-switch power supply, a momentary switch should be
connected between pins 6 and 8 of the power switch connections on the front panel connector. If
the switch is closed for greater than approximately 4 seconds, the motherboard powers off
immediately, regardless of the state of the operating system, losing any system context information.
This input is redundant when using a hard-switch power supply.
Reset Switch
If used, a momentary switch connected between pins 5 and 7 will cause the motherboard to restart
when closed.
Hard Disk LED
To indicate hard disk activity on either of the two ATA channels, a single color LED should be
connected between pins 1 (anode) and 3.
Speaker
Connect an external speaker between pins 10 and 12 or 10 and 16. This is used only for the PC
‘beep’ functions. The speaker should typically be 8Ω.