CPU Upgrade and Jumper Setting
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CPU Support and Jumper Setting for PVI-486AP4 Motherboard

Rev. 1.6 Motherboard

* SL Enhanced 486DX,ODP
* 486DX4 & ODP
* 486DX2 & ODP

JP18 2-3, 4-5 short
JP19 1-2, 3-4 short

* 486DX & ODP
* DX2 &ODP, 486SX
* Cx486DX,DX2,DX2-V

JP18 1-2, 4-5 short
JP19 1-2, 3-4 short

* SL Enhanced 486SX,SX2
*
Cx486s

JP18 2-3, 4-5 short
JP19 1-2, 3-4 short

* 486SX, SX2

JP18 1-2, 4-5 short
JP19 1-2, 4-5 short

* Pentium OverDrive
* P24T, P24CT, P24D

JP17 1-2 short for WB (Open for WT)
JP18 2-3, 5-6 short
JP19 1-2, 3-4 short

* Am486DX2 (2x clk)

JP18 1-2, 4-5 short
JP19 3-4 short
JP17 Pin-2 & JP18-3 short for 2x clk

* Am486DX2-80(3x clk)
* Am486DX4-100(3x clk)

JP18 1-2, 4-5 short
JP19 3-4 short

* Am486DXL
* Am486DX2L

JP18 1-2, 4-5 short
JP19 3-4 short

* Am486SXL
* Am486SX2L

JP18 1-2, 4-5 short
JP19 4-5 short

* Cx5x86(M1sc)-133MHz
* Am5x86-P75(x5-133MHz)
* AMD486DX4-SV8B(120MHz)
* UMC-U5S

Do Not Support


Rev. 1.3 Motherboard

* SL Enhanced 486DX,ODP
* 486DX4 & ODP
* 486DX2 & ODP

JP18 2-3, 4-5 short
JP19 1-2 short

* 486DX & ODP
* DX2 &ODP, 486SX
* Cx486DX,DX2,DX2-V

JP18 1-2, 4-5 short
JP19 1-2 short

* SL Enhanced 486SX,SX2
*
Cx486s

JP18 2-3, 4-5 short
JP19 2- 3 short

* 486SX, SX2

JP18 1-2, 4-5 short
JP19 2-3 short

* Pentium OverDrive
* P24T, P24CT, P24D

JP17 1-2 short for WB(Open for WT)
JP18 1-2, 4-5 short
JP19 4-5 short

* Cx5x86(M1sc)-133MHz, Am486DX2-66(2x clk), Am486DX4-100(3x clk)
* Am5x86-P75(x5-133MHz), Am486SXL, Am486DXL, Am486DX2L
* AMD486DX4-SV8B(120MHz), Am486DX2-80(3x clk)
* UMC-U5S, Am486SX2L

Do Not Support


CPU Internal Clock

CPU Internal Clock

JP17

2x Ext. Clock

4&5

2.5x Ext. Clock

3&4

3x Ext. Clock

Open

CPU External Clock

CPU External Clock

JP25

JP26

25 MHz

2&3

1&2

33MHz

1&2

2&3

CPU L1 WB/WT Setting

CPU L1 Cache Type

JP17

Write Through

Open

Write Back

1&2


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Last-Modified: 08/05/96 by Steven Chou
Copyright (C) 1995 ASUSTeK COMPUTER INC.