PB 486 R,486T & FORCE 486/25 Motherboard Layout

Sockets

Jumpers

Connectors
 
旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴쩡컴컴컴컴컴컴컴컴컴컴�
넬_旼�   旼� 旼� 旼� 旼� 旼� 旼� 旼�            �   �         旼컴�       �
납 남�   남� 남� 남� 남� 남� 남� 남�        J�  읕컴�         �   �   볏 P�
납 남�   남� 남� 남� 남� 남� 남� 남�        1�    J2          �   �   볏 S�
납 읕�   남� 남� 남� 남� 남� 남� 남�            (KEYB)        �   �   볏 1�
납       남� 남� 남� 남� 남� 남� 남�                          � U �       �
납 J     � � 남� 남� 남� 남� 남� � �     旼�                  � 1 �       �
납:G     쿞� 남� 남� 남� 남� 남� 쿞�     � �                  � 6 �   볏 P�
납 N     쿗� 남� 남� 남� 남� 남� 쿗�     � �                  �   �   볏 S�
납 D     쿚� 남� 남� 남� 남� 남� 쿚�     읕�                  �   �   볏 2�
납       쿟� 남� 남� 남� 남� 남� 쿟�     旼�                  �   �       �
납       �1� 남� 남� 남� 남� 남� �7�     � �                  �   �       �
납       남� 남� 남� 남� 남� 남� 남�     � �                  �   �       �
납       남� 남� 남� 남� 남� 남� 남�     읕�   旼�            읕컴�       �
납 旼�   남� 남� 남� 남� 남� 남� 남�     旼�   � �                        �
납 남�   남� 남� 남� 남� 남� 남� 남�     � �   � �                        �
냉_남�   쳐� 쳐� 읕� 읕� 쳐� 쳐� 쳐�     � �   읕�                        �
납 읕�   남� 남넬컴컴컴� 남� 남� 남�     읕�                 J.   �1      �
납       남� 남납      � 남� 남� 남�     旼�   旼�           P�   �   �1  �
납32     남� 남납 U18  � 남� 남� 남�     � �   � �    旼�    2 J  �   �   �
납BIT    남� 남납      � 남� 남� 남�     � �   � �    � �      P  �   �   �
납MEMORY 남� 남납      � 남� 남� 남�     읕�   읕�    � �      3  켍  켍  �
납SLOT   읕� 읕牡컴컴컴� 읕� 읕� 읕�     旼�          읕�   J� �  �6  �7  �
납                                       � �   旼�          P. .  �   �   �
납                        旼컴컴컴커     � �   � �          1     �   �   �
납                        �        �     읕�   � �                �   �   �
납                        �        �           읕�      旼컴컴커  �   �   �
납                        �  U51   �     旼커  旼�      �      �  �   �   �
납 旼�                    �        �     �  �  � �      �      �  �       �
납 남�                    �        �     �  �  � �      � U22  �          �
납 남�   郞袴먼袴拷       읕컴컴컴켸     �  �  읕�      �      �          �
납 남�   �   납   �                      읕켸           읕컴컴켸          �
납 남�   �   납   �                      旼커                             �
납 남�   �   납   �       �袴袴袴袴�\    �  �  旼�          旼왯커旼왯커  �
납 남�   � U 납 U �       �        1�    �  �  � �          쿢납U납U납U�  �
납 남�   � 4 납 4 �       �         �    �  �  � �          �6납6납6납6�  �
납 남�   � 7 납 8 �       �  U52    �    읕켸  읕�          �0납1납2납3�  �
납 남�   �   납   �       �         �    旼커               읕牡켸읕牡켸  �
납 남�   �   납   �       �         �    �  � 旼커          旼왯커旼왯커  �
납 남�   �   납   �       훤袴袴袴袴1/4    �  � �  �          쿢납U납U납U�  �
납 남�   읕컴牡컴켸                      �  � �  �          �6납6납7납7�  �
납 남�   旼컴컴컴커                      읕켸 �  �          �8납9납0납1�  �
납 남�   �        �      旼컴컴컴컴컴�\    J  읕켸          읕牡켸읕牡켸  �
납 남�   �        �      �           1쿕� �8                旼왯커旼왯커  �
납 남�   �  U49   �      �            �9�                   쿢납U납U납U�  �
납 남�   �        �      �            �    J                �7납7납7납7�  �
납 남�   읕컴컴컴켸      �    CPU     �   �4                �6납7납8납9�  �
납 남�   旼커旼커        �   80486    �                     읕牡켸읕牡켸  �
냅_읕�   쿢 납U �        �            쿕�                 旼왯커旼�  旼�  �
�        �9 납8 �        �            �3� 켍              쿢납U납U�  쿢�  �
�        �0 납9 �        읕컴컴컴컴컴켸 � �5              �8납8납8�  �8�  �
�        �  납  �                                         �4납5납6�  �7�  �
�        읕켸읕켸                                         읕牡켸읕�  읕�  �
�______________________________________________________________________�

Sockets

Socket

Chip

Description

U16 8042 Keyboard Controller
U18 UM82C206L
-
 
U22 S9124AL
-
 
U47,U48
-
 
Low & High BIOS
U49 82C482
-
 
U51 82C481
-
 
U52 WTL4187 Math Coprocessor
U89,U90 IS61C66 Tag RAM
U60,U87
-
 
SRAM


Jumpers

Note

* Indicates Default Settings.
JP1 (FDC) 1-2 *
2-3
Enabled
Disabled
JP2 (Display Mode) 1-2 *
 
Color Mode
Monochrome Mode
JP3 (IDE Interface) 1-2 *
2-3
Enabled
Disabled

Connectors

   
PS1,PS2 Power Supply
J1 Battery
J2 Keyboard
J3 Pwr/Trb LED & Keylock
J4 Reset
J5 Speaker
J6 IDE (HDD)
J7 FDD
J8 Turbo Switch
J9 HDD indicator