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VL/I-486SV2G (REV. 1.0)

ASUS COMPUTER INTERNATIONAL

VL/I-486SV2G (REV. 1.0)

VL/I-486SV2GX4 (REV. 1.0)

Processor

CX486S/80486SX/SL80486SX/486 Overdrive/SL486 Overdrive/ 80487SX/CX486DX/80486DX/SL80486DX/80486DX2/SL80486DX2/CX486DX2/80486DX4/P24T

Processor Speed

20/25/33/40/50(internal)/50/66(internal)/75(internal)/

100(internal)MHz

Chip Set

SIS

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

128/256/512/1024KB

BIOS

Award

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (2), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Green PC connector

JP2

Speaker

J2

Green PC connector

JP3

Reset switch

J3

Green PC connector

JP4

Turbo LED

J4

Green PC connector

JP28

Turbo switch

J5

32-bit VESA local bus slots

SL1 & SL2

External battery

J6

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Battery type select internal

JP1

Pins 1 & 2 closed

 

Battery type select external

JP1

Pins 2 & 3 closed

»

IRQ12 enabled

JP7

Pins 1 & 2 closed

 

IRQ12 disabled

JP7

Pins 2 & 3 closed

»

Factory configured - do not alter

JP8

Unidentified

 

Monitor type select monochrome/VGA

JP9

Pins 1 & 2 closed

 

Monitor type select CGA

JP9

Pins 2 & 3 closed

 

Green PC enabled (JP28)

JP10

Pins 2 & 3 closed

 

Green PC disabled (RC control)

JP10

Pins 1 & 2 closed

»

VESA clock delay enabled

JP24

Pins 1 & 2 closed

 

VESA clock delay disabled

JP24

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

None

None

None

2MB

(1) 256K x 36

(1) 256K x 36

None

None

2MB

(1) 512K x 36

None

None

None

4MB

(1) 1M x 36

None

None

None

5MB

(1) 256K x 36

(1) 1M x 36

None

None

6MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

None

6MB

(1) 512K x 36

None

(1) 1M x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

10MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

10MB

(1) 256K x 36

(1) 256K x 36

(1) 2M x 36

None

10MB

(1) 512K x 36

None

(1) 1M x 36

(1) 1M x 36

10MB

(1) 512K x 36

None

(1) 2M x 36

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

12MB

(1) 2M x 36

None

(1) 1M x 36

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 2M x 36

None

16MB

(1) 2M x 36

None

(1) 2M x 36

None

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

16MB

(1) 2M x 36

None

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

None

None

None

17MB

(1) 256K x 36

(1) 4M x 36

None

None

18MB

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

None

18MB

(1) 512K x 36

None

(1) 4M x 36

None

20MB

(1) 1M x 36

(1) 4M x 36

None

None

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

None

24MB

(1) 2M x 36

None

(1) 4M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 8M x 36

None

None

None

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

None

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

None

40MB

(1) 2M x 36

None

(1) 4M x 36

(1) 4M x 36

40MB

(1) 2M x 36

None

(1) 8M x 36

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

None

64MB

(1) 8M x 36

None

(1) 8M x 36

None

Note: The location of banks 0, 1, 2, & 3 are unidentified.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

(1) 8K x 8

256KB (A)

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

256KB (B)

(4) 64K x 8

None

(1) 32K x 8

512KB (A)

(4) 64K x 8

(4) 64K x 8

(1) 32K x 8

512KB (B)

(4) 128K x 8

None

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

CACHE JUMPER CONFIGURATION

Size

JP13

JP14

JP25

128KB

Open

Pins 2 & 3 closed

Pins 1 & 2 closed

256KB (A)

Open

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB (B)

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

512KB (A)

Pins 4 & 5 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

512KB (B)

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

1MB

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

CPU SPEED SELECTION

Speed

JP21

JP22

JP23

20MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

25MHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

33MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

40MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

50iMHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

50MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

66iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

75iMHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

100iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

CPU TYPE SELECTION

Type

JP16

JP17

JP18

JP19

JP20

CX468S

2 & 3, 4 & 5

1 & 2

1 & 2, 3 & 4

2 & 3

2 & 3

80486SX

Open

Open

Open

2 & 3

2 & 3

SL80486SX

3 & 4, 5 & 6

Open

4 & 5

2 & 3

2 & 3

486 Overdrive

Open

Open

Open

1 & 2

2 & 3

SL486 Overdrive

5 & 6

Open

4 & 5

1 & 2

2 & 3

80487SX

Open

Open

Open

1 & 2

2 & 3

CX486DX

2 & 3, 4 & 5

1 & 2

1 & 2, 3 & 4

1 & 2

2 & 3

80486DX

Open

Open

Open

1 & 2

2 & 3

SL80486DX

3 & 4, 5 & 6

Open

4 & 5

1 & 2

2 & 3

80486DX2

Open

Open

Open

1 & 2

2 & 3

SL80486DX2

3 & 4, 5 & 6

Open

4 & 5

1 & 2

2 & 3

CX486DX2

2 & 3, 4 & 5

1 & 2

1 & 2, 3 & 4

1 & 2, 4 & 5

2 & 3

80486DX4 (2x)

3 & 4, 5 & 6

5 & 6

4 & 5

1 & 2

2 & 3

80486DX4 (2.5x)

3 & 4, 5 & 6

4 & 5

4 & 5

1 & 2

2 & 3

80486DX4 (3x)

3 & 4, 5 & 6

Open

4 & 5

1 & 2

2 & 3

P24T

5 & 6

Open

4 & 5

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

JP11

Cyrix

Pins 1 & 2 closed

Intel

Pins 2 & 3 closed

CPU HARDWARE TRAP SELECTION

Type

JP5

JP6

CX468S

Pins 2 & 3 closed

Pins 1 & 2 closed

80486SX

Pins 1 & 2 closed

Pins 2 & 3 closed

SL80486SX

Pins 1 & 2 closed

Pins 2 & 3 closed

CX486DX

Pins 2 & 3 closed

Pins 1 & 2 closed

80486DX

Pins 1 & 2 closed

Pins 2 & 3 closed

SL80486DX

Pins 1 & 2 closed

Pins 2 & 3 closed

80486DX2

Pins 1 & 2 closed

Pins 2 & 3 closed

SL80486DX2

Pins 1 & 2 closed

Pins 2 & 3 closed

CX486DX2

Pins 2 & 3 closed

Pins 1 & 2 closed

80486DX4

Pins 1 & 2 closed

Pins 2 & 3 closed

P24T

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU VOLTAGE SELECTION

Voltage

JP12

JP15

3v

Pins 2 & 3 closed

Pins 2 & 3 closed

5v

Pins 1 & 2 closed

Pins 1 & 2 closed

VL BUS WAIT STATE SELECTION

Setting

JP26

0

Pins 1 & 2 closed

1

Pins 2 & 3 closed

VL BUS SPEED SELECTION

Speed

JP27

<= 33MHz

Pins 1 & 2 closed

>33 MHz

Pins 2 & 3 closed