cpu upgrade and jumper setting
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CPU Support and Jumper Setting for VL/I-486SV2GOX4 Motherboard

Rev. 1.5 Motherboard

* Am486DX4-SV8B
* i486DX4-&EW
* i486DX2-&EW (P24D)

JP18 1-2, 5-6 short for WT
JP19 1-2, 5-6 short
JP20 1-2 short
JP21 1-2, 3-4, 5-6 short
JP22 All Open for 3x clk, (1-2 short for 2x clk)
JP23 2-3 short for WT
JP24 1-2, 4-5 short

 * Am486DX4-NV8T
* Am486DX2-NV8T
* Am486DXL4, DXL2

JP18 1-2, 5-6 short
JP19 4-5 short
JP20 4-5 short
JP21 All Open
JP22 4-5 short
JP23 All Open for 3x clk, (2-3 short for 2x clk)
JP24 1-2, 4-5 short

 * Intel 486DX4ODP-3x clk
* Intel 486DX4ODP-2.5 clk
* Intel 486DX4ODP-2x clk

JP18 5-6 short
JP19 1-2, 5-6 short
JP20 1-2, 5-6 short
JP21 1-2 short
JP22 All Open for 3x clk, (5-6 short for 2.5x clk, 1-2 short for 2x clk)
JP23 All Open
JP24 1-2 short

 * Intel SL486SX, SX2
* Intel NonSL486SX, SX2

JP18 5-6 short
JP19 1-2, 5-6 short
JP20 1-2, 5-6 short
JP21 1-2 short
JP22 All Open
JP23 All Open
JP24 2-3 short
* Cx486DX4 (3.45V)
* Cx486DX2-V (3.6V/4V)
* Ti486DX2-G(3.45V)
* Cx486DX, DX2

JP18 2-3, 5-6 short
JP19 2-3, 5-6 short
JP20 2-3 short
JP21 2-3 short
JP22 2-3 short
JP23 1-2 short (All Open for Cyrix 486DX, DX2)
JP24 1-2 short

 * Cx486DX4-P/O
* Cx5x86(M1sc)

JP18 1-2, 5-6 short
JP19 1-2, 5-6 short
JP20 1-2 short
JP21 1-2, 3-4, 5-6 short
JP22 All Open for 3x clk, (1-2 short for 2x clk)
JP23 All Open
JP24 1-2 short

 * SL(NonSL)i486DX,DX2
* SL(NonSL)i487SX,ODP
* i486DX4-3x, 2.5x, 2x clk

JP18 1-2, 5-6 short
JP19 1-2, 5-6 short
JP20 1-2, 5-6 short
JP21 1-2 short
JP22 All Open for 3x clk, (5-6 for 2.5x clk, 1-2 short for 2x clk)
JP23 All Open
JP24 1-2 short

 * P24T, 237-Pin SL ODP


JP18 4-5 short
JP19 1-2, 5-6 short
JP20 5-6 short
JP21 1-2 short
JP22 All Open
JP23 2-3 short for WT
JP24 1-2 short
* Am5x86-P75(x5-133MHz)

JP18 1-2, 5-6 short for WT
JP19 1-2, 5-6 short
JP20 1-2 short
JP21 1-2, 3-4, 5-6 short
JP22 All Open for 3x clk, (1-2 short for 4x clk)
JP23 2-3 short for WT
JP24 1-2, 4-5 short

 * Cx5x86(M1sc)-133MHz)

JP18 1-2, 5-6 short for WT
JP19 1-2, 5-6 short
JP20 1-2 short
JP21 1-2, 3-4, 5-6 short
JP22 All Open for 3x clk, (1-2 short for 4x clk)
JP23 All Open
JP24 1-2 short

 Cyrix/Intel CPU Selection

CPU

JP9

Cyrix

1&2

Intel

2&3

CPU Voltage Setting

Voltage

JP34

3.45(Volt)

1&2

3.6(Volt)

2&3

CPU External Clock Setting

Clock Speed

JP25

JP26

JP27

20MHz

1&2

1&2

1&2

25 MHz

2&3

1&2

1&2

33MHz

2&3

2&3

2&3

40MHz

2&3

2&3

1&2

50MHz

1&2

1&2

2&3

Hardware Trap Setting

CPU

JP7

JP8

486SX, DX, DX2, DX4ODP, 487SX, SL 486SX, DX, DX2, DX4, Am486DX4-NV8T, DX2-NV8T

1&2

2&3

Cyrix S(2), DX(2), DX2-V, DX4, 5x86, Am486D(S), DXL, DXL4, DXL2, Ti486DX2-G

2&3

1&2

i486DX4-&EW, P24D, P24T, Am486DX4-SV8B

1&2

1&2
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Last-Modified: 08/05/96 by Steven Chou
Copyright (C) 1995 ASUSTeK COMPUTER INC.