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VALUE SERIES 486

PC BRAND

VALUE SERIES 486

Processor

80386DX/80486SX/80487SX/80486DX/80486DX2

Processor Speed

25/33/40/50(internal)MHz

Chip Set

Unidentified

Max. Onboard DRAM

32MB

Cache

64/128/256/1024KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

Parallel port, serial ports (2), VGA port, VGA feature connector, floppy drive interface, IDE interface, game interface, riser slot

NPU Options

80387DX/3167/4167

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

IDE interface

PL6

Parallel port

CN2

Reset switch

PL9

Serial port 1

CN3

Turbo LED

PL12

Serial port 2

CN4

IDE interface LED

PL14

Game interface

PL3

VGA feature connector

PL19

Floppy drive interface

PL5

Riser Card

SL1

Note: The location of jumpers PL9, PL12, PL14 are unidentified.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP1

N/A

Factory configured - do not alter

JP2

N/A

Factory configured - do not alter

JP3

N/A

Factory configured - do not alter

JP3

N/A

Factory configured - do not alter

JP4

N/A

Factory configured - do not alter

JP5

N/A

Factory configured - do not alter

JP6

N/A

Factory configured - do not alter

JP7

N/A

Factory configured - do not alter

JP8

N/A

Factory configured - do not alter

JP9

N/A

Factory configured - do not alter

JP10

N/A

Factory configured - do not alter

JP11

N/A

Factory configured - do not alter

JP12

N/A

Factory configured - do not alter

JP13

N/A

Factory configured - do not alter

JP14

N/A

Factory configured - do not alter

JP15

N/A

Factory configured - do not alter

JP16

N/A

Factory configured - do not alter

JP17

N/A

Factory configured - do not alter

JP18

N/A

Factory configured - do not alter

JP19

N/A

Factory configured - do not alter

JP20

N/A

Factory configured - do not alter

JP21

N/A

Factory configured - do not alter

JP22

N/A

Factory configured - do not alter

JP23

N/A

Factory configured - do not alter

JP24

N/A

Factory configured - do not alter

JP25

N/A

Factory configured - do not alter

JP26

N/A

Factory configured - do not alter

JP27

N/A

Factory configured - do not alter

JP28

N/A

External speaker enabled

PL20

pins 2 & 3 closed

 

External speaker disabled

PL20

pins 1 & 2 closed

System security enabled

W4

Closed

 

System security disabled

W4

Open

Game port enabled

W13

Open

 

Game port disabled

W13

Closed

Floppy drive interface enabled

W19

pins 1 & 2 closed

 

Floppy drive interface disabled

W19

pins 2 & 3 closed

IDE interface enabled

W20

pins 1 & 2 closed

 

IDE interface disabled

W20

pins 2 & 3 closed

External speaker enabled

W28

pins 2 & 3 closed

 

External speaker disabled

W28

pins 1 & 2 closed

USER CONFIGURABLE SETTINGS (CONT)

Function

Jumper

Position

80486 burst mode select 2-1-1-1

W44

Open

 

80486 burst mode select 3-2-2-2

W44

Closed

Cache wait state select 0 wait states

W45

Closed

 

Cache wait state select 1 wait state

W45

Open

Parallel port IRQ select IRQ5

W49

pins 2 & 3 closed

 

Parallel port IRQ select IRQ7

W49

pins 1 & 2 closed

On board VGA wait state select 0 wait states

W55

Closed

 

On board VGA wait state select 1 wait state

W55

Open

Factory configured - do not alter

W56

N/A

Note: The location of jumpers PL 20, W28, W44, & W45 are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K x 9

17MB

(4) 256K x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

CACHE JUMPER CONFIGURATION

Size

W18

W26

W30

W31

W32

None

2 & 3

2 & 3

1 & 2

1 & 2

1 & 2

64KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

128KB

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

128KB

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

256KB

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

1MB

1 & 2

1 & 2

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CONT)

Size

W33

W34

W35

W36

W37

None

Open

1 & 2

Open

Open

Open

64KB

2 & 3

1 & 2

1 & 2

1 & 2

2 & 3

128KB

1 & 2

1 & 2

Open

1 & 2

1 & 2

128KB

Open

1 & 2

Open

2 & 3

1 & 2

256KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CONT)

Size

W38

W39

W40

W41

W42

None

Open

Open

Open

Open

Open

64KB

2 & 3

2 & 3

2 & 3

Open

Open

128KB

1 & 2

1 & 2

1 & 2

Closed

Open

128KB

1 & 2

1 & 2

1 & 2

Closed

Closed

256KB

2 & 3

2 & 3

2 & 3

Open

Open

1MB

2 & 3

2 & 3

2 & 3

Open

Open

Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CONT)

Size

W43

W46

W68

W69

None

Open

Open

Open

Open

64KB

Closed

Open

Open

Open

128KB

Open

Open

Open

pins 1 & 2 closed

128KB

Closed

Open

Open

Open

256KB

Closed

Open

Open

pins 2 & 3 closed

1MB

Closed

Open

Open

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

W48

W54

W57

W60

W61

80386DX-40

2 & 3

1 & 2

Closed

1 & 2

2 & 3

80486SX-25

3 & 4

2 & 3

Open

2 & 3

1 & 2

80486DX-33

3 & 4

2 & 3

Closed

1 & 2

2 & 3

80486DX2-50

3 & 4

2 & 3

Closed

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONT)

Type

W62

W63

W64

W65

80386DX-40

pins 2 & 3 closed

Open

pins 1 & 2 closed

Closed

80486SX-25

pins 1 & 2 closed

Closed

pins 2 & 3 closed

Open

80486DX-33

pins 2 & 3 closed

Closed

pins 2 & 3 closed

Open

80486DX2-50

pins 2 & 3 closed

Closed

pins 2 & 3 closed

Open

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONT)

Type

W66

W67

W70

W71

80386DX-40

Open

Open

pins 2 & 3 closed

pins 2 & 3 closed

80486SX-25

Closed

Closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX-33

Closed

Closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX2-50

Closed

Closed

pins 1 & 2 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

W47

1x

Closed

2x

Open

PARALLEL PORT CONFIGURATION

Setting

W21

W29

LPT1 enabled

pins 2 & 3 closed

pins 1 & 2 closed

LPT2 disabled

pins 1 & 2 closed

pins 2 & 3 closed

Note: The location of W29 is unidentified.

SERIAL PORT 1 CONFIGURATION

Setting

W17

W22

COM1 enabled

pins 1 & 2 closed

pins 1 & 2 closed

COM1 disabled

pins 2 & 3 closed

pins 2 & 3 closed

SERIAL PORT 2 CONFIGURATION

Setting

W15

W16

COM2 enabled

pins 1 & 2 closed

pins 1 & 2 closed

COM2 disabled

pins 2 & 3 closed

pins 2 & 3 closed

ON BOARD VGA CONFIGURATION

Setting

W14

W50

Enabled

Open

Closed

Disabled

Closed

Open

VRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(2) 256K x 4

NONE

1MB

(2) 256K x 4

(2) 256K x 4

VRAM JUMPER CONFIGURATION

Size

W58

W59

512KB

Closed

Open

1MB

Open

Open

MISCELLANEOUS TECHNICAL NOTE

Note: The location of pin 1 is unidentified.