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Chapter 3 Installation
22
Step 2 Set Switch and Jumper Options
CPU and Upgrade Socket
Intel 80486SX, 80486DX, or 8048DX2 CPUs can be inserted in the CPU socket. An Intel 80487SX math coprocessor or
an Upgrade Processor (P23T or P24T) can be inserted in the Upgrade Socket.
SW1
SW1 has two switches. See the graphic on the previous page for the SW1 location. Set SW1 before installation.
Switch
Description
DIAG
Turns on manufacturing diagnostics. This switch is factory-set to
OFF and should remain OFF.
COL/MONO
Sets the video type. It has no effect if an EGA or VGA adapter is
used. It is factory-set to OFF ( for a monochrome display adapter).
Set ON to use a CGA video adapter card.
J15, J16, J43 CPU Select
J15 (a four-pin berg), J16 (a three-pin berg), and J43 ( a two-pin berg) together select the CPU type.
CPU in ZIF
Socket
PQFP CPU
J43
J15
J16
None
486DX/SX
OPEN
N/A
N/A
P23T,
487SX, or
P24T
486DX/SX
SHORT
Short 1-2
Short 3-4
Short 2-3
P23T,
487SX, or
P24T
N/A
Short 1-2
Short 3-4
Short 2-3
486DX or
486DX2
N/A
Short 1-2
Short 3-4
Short 1-2
486DX or
486DX2
486DX/SX
SHORT
Short 1-2
Short 3-4
Short 1-2
486SX
N/A
Short 2-3
N/A
486SX
486DX/SX
SHORT
Short 2-3
N/A
Содержание 87 Series
Страница 18: ...Enterprise IV EISA VLB Motherboard User s Guide 21 ...
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Страница 37: ...Enterprise IV EISA VLB Motherboard User s Guide 39 ...
Страница 54: ...56 ...
Страница 106: ...Appendix C EISA Configuration Worksheets 108 ...
Страница 115: ...Enterprise IV EISA VLB Motherboard User s Guide 117 Index ...