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MS-4131G (VLB 486 AL2G)

MICRO-STAR INTERNATIONAL CO., LTD.

MS-4131G (VLB 486 AL2G)

Processor

80486SX/80487SX/CX486M7/AMD486DX/AMD486DXL/80486DX/80486DX2/ Pentium Overdrive

Processor Speed

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

Chip Set

ALI

Max. Onboard DRAM

64MB

Cache

128/256/512KB

BIOS

AMI/Award/Phoenix

Dimensions

260mm x 220mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JB

Reset switch

JFP pins 19 - 20

Power LED & keylock

JFP pins 1 -5

Green PC connector (monitor)

JG1

Speaker

JFP pins 7 - 10

Green PC LED connector

JG2

Turbo LED

JFP pins 12 - 13

Green PC connector (sleep mode)

JG3

Turbo switch

JFP pins 15 - 17

32-bit VESA Local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Ľ

On board battery installed

JB

pins 2 & 3 closed

 

External battery installed

JB

pins 1 & 2, 3 & 4 closed

Ľ

PQFP CPU disabled

JC4

Closed

 

PQFP CPU enabled

JC4

Open

Ľ

Factory configured - do not alter

JC6

N/A

Ľ

Monitor type select monochrome

JP1

pins 1 & 2 closed

 

Monitor type select color

JP1

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

NONE

NONE

1MB

NONE

(1) 256K x 36

NONE

1MB

NONE

NONE

(1) 256K x 36

2MB

NONE

NONE

(1) 512K x 36

2MB

NONE

(1) 512K x 36

NONE

2MB

NONE

(1) 256K x 36

(1) 256K x 36

2MB

(4) 256K x 9

(1) 256K x 36

NONE

3MB

(4) 256K x 9

(1) 256K x 36

(1) 256K x 36

3MB

NONE

(1) 256K x 36

(1) 512K x 36

4MB

(4) 256K x 9

(1) 256K x 36

(1) 512K x 36

4MB

(4) 1M x 9

NONE

NONE

4MB

NONE

(1) 512K x 36

(1) 512K x 36

4MB

NONE

(1) 1M x 36

NONE

4MB

NONE

NONE

(1) 1M x 36

5MB

NONE

(1) 256K x 36

(1) 1M x 36

5MB

(4) 256K x 9

(1) 1M x 36

NONE

5MB

(4) 1M x 9

(1) 256K x 36

NONE

6MB

(4) 256K x 9

(1) 1M x 36

(1) 256K x 36

6MB

(4) 256K x 9

(1) 256K x 36

(1) 1M x 36

6MB

(4) 1M x 9

(1) 256K x 36

(1) 256K x 36

6MB

NONE

(1) 512K x 36

(1) 1M x 36

7MB

(4) 256K x 9

(1) 1M x 36

(1) 512K x 36

7MB

(4) 1M x 9

(1) 256K x 36

(1) 512K x 36

8MB

NONE

NONE

(1) 2M x 36

8MB

NONE

(1) 2M x 36

NONE

8MB

NONE

(1) 1M x 36

(1) 1M x 36

8MB

(4) 1M x 9

(1) 1M x 36

NONE

9MB

(4) 256K x 9

(1) 1M x 36

(1) 1M x 36

9MB

(4) 1M x 9

(1) 256K x 36

(1) 1M x 36

9MB

(4) 1M x 9

(1) 1M x 36

(1) 256K x 36

9MB

NONE

(1) 256K x 36

(1) 2M x 36

10MB

(4) 1M x 9

(1) 1M x 36

(1) 512K x 36

10MB

(4) 256K x 9

(1) 256K x 36

(1) 2M x 36

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

10MB

NONE

(1) 512K x 36

(1) 2M x 36

12MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

12MB

NONE

(1) 1M x 36

(1) 2M x 36

13MB

(4) 1M x 9

(1) 256K x 36

(1) 2M x 36

13MB

(4) 256K x 9

(1) 1M x 36

(1) 2M x 36

16MB

NONE

NONE

(1) 4M x 36

16MB

NONE

(1) 4M x 36

NONE

16MB

NONE

(1) 2M x 36

(1) 2M x 36

16MB

(4) 1M x 9

(1) 1M x 36

(1) 2M x 36

17MB

(4) 256K x 9

(1) 4M x 36

NONE

17MB

NONE

(1) 256K x 36

(1) 4M x 36

18MB

NONE

(1) 512K x 36

(1) 4M x 36

18MB

(4) 256K x 9

(1) 256K x 36

(1) 4M x 36

18MB

(4) 256K x 9

(1) 4M x 36

(1) 256K x 36

19MB

(4) 256K x 9

(1) 4M x 36

(1) 512K x 36

20MB

(4) 1M x 9

(1) 4M x 36

NONE

20MB

NONE

(1) 1M x 36

(1) 4M x 36

21MB

(4) 256K x 9

(1) 1M x 36

(1) 4M x 36

21MB

(4) 1M x 9

(1) 256K x 36

(1) 4M x 36

21MB

(4) 256K x 9

(1) 4M x 36

(1) 1M x 36

21MB

(4) 1M x 9

(1) 4M x 36

(1) 256K x 36

21MB

(4) 4M x 9

(1) 256K x 36

(1) 1M x 36

21MB

(4) 1M x 9

(1) 256K x 36

(1) 8M x 36

22MB

(4) 1M x 9

(1) 4M x 36

(1) 512K x 36

24MB

(4) 4M x 9

(1) 1M x 36

(1) 1M x 36

24MB

(4) 1M x 9

(1) 4M x 36

(1) 1M x 36

24MB

(4) 1M x 9

(1) 1M x 36

(1) 4M x 36

24MB

NONE

(1) 2M x 36

(1) 4M x 36

25MB

(4) 256K x 9

(1) 4M x 36

(1) 2M x 36

25MB

(4) 4M x 9

(1) 256K x 36

(1) 2M x 36

28MB

(4) 1M x 9

(1) 4M x 36

(1) 2M x 36

28MB

(4) 4M x 9

(1) 1M x 36

(1) 2M x 36

32MB

(4) 4M x 9

NONE

(1) 4M x 36

32MB

NONE

(1) 4M x 36

(1) 4M x 36

32MB

NONE

(1) 8M x 36

NONE

32MB

NONE

NONE

(1) 8M x 36

32MB

(4) 4M x 9

(1) 4M x 36

NONE

33MB

(4) 4M x 9

(1) 4M x 36

(1) 256K x 36

33MB

(4) 4M x 9

(1) 256K x 36

(1) 4M x 36

33MB

(4) 256K x 9

(1) 4M x 36

(1) 4M x 36

33MB

NONE

(1) 256K x 36

(1) 8M x 36

33MB

(4) 4M x 9

(1) 256K x 36

(1) 4M x 36

34MB

(4) 4M x 9

(1) 256K x 36

(1) 256K x 36

34MB

(4) 4M x 9

(1) 4M x 36

(1) 512K x 36

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

34MB

(4) 256K x 9

(1) 256K x 36

(1) 8M x 36

34MB

NONE

(1) 512K x 36

(1) 8M x 36

36MB

(4) 1M x 9

(1) 4M x 36

(1) 4M x 36

36MB

(4) 4M x 9

(1) 1M x 36

(1) 4M x 36

36MB

(4) 4M x 9

(1) 4M x 36

(1) 1M x 36

36MB

NONE

(1) 1M x 36

(1) 8M x 36

37MB

(4) 256K x 9

(1) 1M x 36

(1) 8M x 36

37MB

(4) 256K x 9

(1) 1M x 36

(1) 8M x 36

37MB

(4) 4M x 9

(1) 1M x 36

(1) 256K x 36

40MB

(4) 1M x 9

(1) 1M x 36

(1) 8M x 36

40MB

(4) 4M x 9

(1) 4M x 36

(1) 2M x 36

40MB

NONE

(1) 2M x 36

(1) 8M x 36

48MB

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

48MB

NONE

(1) 4M x 36

(1) 8M x 36

49MB

(4) 256K x 9

(1) 4M x 36

(1) 8M x 36

49MB

(4) 4M x 9

(1) 256K x 36

(1) 8M x 36

52MB

(4) 1M x 9

(1) 4M x 36

(1) 8M x 36

64MB

NONE

(1) 8M x 36

(1) 8M x 36

64MB

(4) 4M x 9

(1) 4M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

NONE

(1) 8K x 8 or (1) 16K x 8 or (1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K x 8 or (1) 32K x 8

256KB

(4) 64K x 8

NONE

(1) 16K x 8 or (1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JS1

JS2

JS3

128KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

256KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

256KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

512KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JC1

JC2

CX486 M7

2A & 3A, 1B & 2B, 1C & 2C

1 & 2, 3 & 4

80486SX

1A & 2A, 1B & 2B, 1C & 2C

2 & 3

SL 80486SX

1A & 2A, 1B & 2B, 1C & 2C

2 & 3

80487SX

1A & 2A, 1B & 2B, 1C & 2C

1 & 2, 3 & 4

AMD486DX/DXL

1A & 2A, 1B & 2B, 1C & 2C

1 & 2, 3 & 4

80486DX/DX2

1A & 2A, 1B & 2B, 1C & 2C

1 & 2, 3 & 4

SL 80486DX/DX2

1A & 2A, 1B & 2B, 1C & 2C

1 & 2, 3 & 4

Pentium Overdrive

1A & 2A, 2B & 3B, 1C & 2C

1 & 2, 3 & 4

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JC3

JC5

CX486 M7

2A & 3A, 4A & 5A, 3B & 4B, 5B & 6B, 3C & 4C, 5C & 6C

1 & 2

80486SX

4C & 5C

1 & 2

SL 80486SX

1A & 2A, 5A & 6A, 4C & 4D, 5C & 6C

1 & 2

80487SX

2B & 3B, 4C & 5C

1 & 2

AMD486DX/DXL

2A & 2B, 3B & 4B, 5A & 5B, 4C & 5C

1 & 2

80486DX/DX2

3B & 4B, 4C & 5C

1 & 2

SL 80486DX/DX2

1A & 2A, 3B & 4B, 4C & 4D, 5A & 6A, 5C & 6C

1 & 2

Pentium Overdrive

1A & 2A, 5A &6A, 2B & 3B, 5C & 6C

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JK1

JK2

JK3

25MHz

1 & 2, 7 & 9, 8 & 10, 14 & 16

2 & 3

1 & 2

33MHz

1 & 2, 3 & 4, 5 & 6, 7 & 9, 8 & 10, 14 & 16

2 & 3

1 & 2

40MHz

3 & 4, 10 & 12, 14 & 16

1 & 2

2 & 3

AMD40MHz

3 & 4, 10 & 12, 14 & 16

4 & 5

2 & 3

50iMHz

1 & 2, 7 & 9, 8 & 10, 14 & 16

2 & 3

1 & 2

50MHz

1 & 2, 7 & 9, 10 & 12

1 & 2

2 & 3

66iMHz

1 & 2, 3 & 4, 5 & 6, 7 & 9, 8 & 10, 14 & 16

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

BUS SPEED CONFIGURATION

CPU speed

JP2

<=33MHz

pins 1 & 2 closed

>33MHz

pins 2 & 3 closed

VESA WAIT STATE CONFIGURATION

Wait states

JP3

0 wait states

pins 1 & 2 open

1 wait state

pins 1 & 2 closed