INSTALLATIONS

JP1: Clear CMOS Contents

Use JP1, a 3-pin header, to clear the CMOS contents. Note that the ATX-power connector should be disconnected from the CPU card before clearing CMOS.

JP1

Setting

Function

 

Pin 1-2

Normal

 

Short/Closed

 

 

 

Pin 2-3

Clear CMOS

 

Short/Closed

 

 

JP2, JP3, JP4: RS232/422/485 (COM2) Selection J4, COM1 is fixed for RS-232 use only.

J5, COM2 is selectable for RS232, RS-422 and RS-485.

The following table describes the jumper settings for COM2 selection.

 

COM2

 

RS-232

 

RS-422

 

RS-485

 

Function

 

 

 

 

 

 

 

 

 

 

 

 

 

JP2:

 

JP2:

 

JP2:

 

Jumper

1-2

3-4

5-6

 

 

 

 

 

 

 

 

Setting

 

JP3:

 

JP3:

 

JP3:

 

(pin closed)

3-5 & 4-6

1-3 & 2-4

1-3 & 2-4

 

 

 

JP4:

 

JP4:

 

JP4:

 

 

3-5 & 4-6

1-3 & 2-4

1-3 & 2-4

JP5/6/7/8/9/10/11: CRT VGA Signal Select

Use these seven 3-pin headers to select the VGA signal either from the on board VGA or from the MicroAGP VGA.

JP5/6/7/8/9/10/11

Setting

Function

 

Pin 1-2

On board VGA

 

Short/Closed

 

 

 

Pin 2-3

MicroAGP VGA

 

Short/Closed

 

 

10

IB865 User’s Manual

Page 14
Image 14
Intel IB865, 865G user manual JP1 Clear Cmos Contents, JP5/6/7/8/9/10/11 CRT VGA Signal Select