Intel 865G User Manual
Page 14
INSTALLATIONS
10
IB865 User’s Manual
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
Short/Closed
Normal
Pin 2-3
Short/Closed
Clear CMOS
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
Function
RS-232
RS-422
RS-485
Jumper
Setting
(pin closed)
JP2:
1-2
JP3:
3-5 & 4-6
JP4:
3-5 & 4-6
JP2:
3-4
JP3:
1-3 & 2-4
JP4:
1-3 & 2-4
JP2:
5-6
JP3:
1-3 & 2-4
JP4:
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
Short/Closed
On board VGA
Pin 2-3
Short/Closed
MicroAGP VGA