Specifications

INTEL OEM PRODUCTS AND SERVICES DIVISION PRELIMINARY - REV 0.1
Classic/PCI i486 Baby-AT Motherboard Technical Product Summary
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APPENDIX B
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JUMPERS
All the configuration jumpers on Classic/PCI i486 Baby-AT motherboard are the three pin, two position type. These sit
side by side in a 2x3 jumper block. The jumper description below assumes a particular point of reference in viewing
the motherboard. Position the board or system so that the CPU and Cache Rams are at the front nearest you, the Dram
SIMMs should be to the right. All functional jumpers have a two-letter indicator as shown in the table. Use these
indicators to locate and position the jumpers for your configuration. Some jumpers can be positioned top or bottom,
(bottom is towards the front of the board) others left or right.
INDICATOR DESCRIPTION DEFAULT
CP Cache Present Jumper. Jumper to the top position if no Cache Ram is
installed in the Board.
Jumpered to the bottom indicates Cache Ram is installed in the board.
Bottom
RV Recovery Jumper. Jumper to top for normal operation
Jumper to the bottom for BIOS RECOVERY MODE.
Top
FI IDE Paddle Card Jumper. Jumper to top to indicate PCI IDE card is installed
in slot J3H1.
Jumpered to the bottom for normal on board IDE operation.
Bottom
BW BIOS Write Jumper. Jumper to the top to disable all writes to Flash EPROM.
Jumpered to the bottom allows for Flash EPROM Updates.
Bottom
CPUVCC CPUVCC Jumpers. These jumpers are not user configurable. Moving
them can result in damage to the CPU!!
Left is for 5 volt CPU operation.
Right is for 3.3 volt operation of 5 volt tolerant CPUs. All four jumpers must be
positioned to the same side.
Left
CL Color/Mono Jumper. Jumpered to the left is for MGA operation.
Jumpered to the right is for color graphics adapters.
Right
CM Clear CMOS Jumper. Jumper to the left will force CMOS to be CLEARED.
Jumper to the right for normal operation.
Right
SE Setup Enable Jumper. Jumper to the left to allow setup to be enabled during
Boot-Up.
Jumper to the right to disable setup during Boot-up.
Left
PW Password Jumper. Jumper to the left for normal operation.
Jumper to the right to clear the password that was previously selected.
Left
Table B-1. Classic/PCI i486 Baby-AT Jumper Description
Figure B-1. Classic/PCI i486 Baby-AT Jumper Locations