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486 VESA AG4

SILICON STAR INTERNATIONAL, INC.

486 VESA AG4

Processor

CX486SX/80486SX/80487SX/CX486DX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

20/25/33/40(internal)/50(internal)/50/66(internal)/75(internal)/83(internal)/ 100(internal)MHz

Chip Set

SIS

Max. Onboard DRAM

128MB

Cache

128/256/512KB

BIOS

AMI/Award

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

J1

Reset switch

J6

Turbo switch

J3

Power LED & keylock

J7

Turbo LED

J4

Green PC connector

JP45

Speaker

J5

32-bit VESA Local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Factory configured - do not alter

J2

Open

»

Turbo mode enabled

J3

pins 2 & 3 closed

 

Turbo mode disabled

J3

pins 1 & 2 closed

»

CMOS memory normal operation

JP16

pins 1 & 2 closed

 

CMOS memory clear

JP16

pins 2 & 3 closed

»

Monitor type select color

JP17

Closed

 

Monitor type select monochrome

JP17

Open

»

Enter break switch

JP19

pins 1 & 2 closed

 

Leave break switch

JP19

pins 2 & 3 closed

»

Factory configured - do not alter

JP23

pins 1 & 2 closed

»

Suspend mode disabled

JP26

Open

 

Suspend mode enabled

JP26

Closed

»

Factory configured - do not alter

JP30

Open

»

Factory configured - do not alter

JP31

Open

»

Factory configured - do not alter

JP42

Closed

Note: The location of JP23 & JP26 is unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

NONE

NONE

(1) 256K x 36

1MB

(4) 256K x 9

NONE

NONE

2MB

NONE

(1) 256K x 36

(1) 256K x 36

2MB

NONE

NONE

(1) 512K x 36

2MB

(4) 256K x 9

NONE

(1) 256K x 36

4MB

NONE

NONE

(1) 1M x 36

4MB

NONE

(1) 512K x 36

(1) 512K x 36

4MB

(4) 1M x 9

NONE

NONE

5MB

NONE

(1) 1M x 36

(1) 256K x 36

5MB

(4) 256K x 9

NONE

(1) 1M x 36

6MB

(4) 1M x 9

(1) 256K x 36

(1) 256K x 36

6MB

NONE

(1) 1M x 36

(1) 512K x 36

6MB

(4) 256K x 9

(1) 1M x 36

(1) 256K x 36

8MB

(4) 1M x 9

(1) 512K x 36

(1) 512K x 36

8MB

NONE

(1) 1M x 36

(1) 1M x 36

8MB

NONE

NONE

(1) 2M x 36

8MB

(4) 1M x 9

NONE

(1) 1M x 36

10MB

(4) 256K x 9

(1) 2M x 36

(1) 256K x 36

12MB

(4) 1M x 9

NONE

(1) 2M x 36

12MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

16MB

NONE

(1) 2M x 36

(1) 2M x 36

16MB

NONE

NONE

(1) 4M x 36

16MB

(4) 1M x 9

(1) 2M x 36

(1) 1M x 36

16MB

(4) 1M x 9

(1) 1M x 36

(1) 2M x 36

17MB

NONE

(1) 4M x 36

(1) 256K x 36

17MB

(4) 256K x 9

NONE

(1) 4M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

18MB

(4) 4M x 9

(1) 256K x 36

(1) 256K x 36

18MB

NONE

(1) 4M x 36

(1) 512K x 36

18MB

(4) 256K x 9

(1) 4M x 36

(1) 256K x 36

20MB

(4) 4M x 9

(1) 512K x 36

(1) 512K x 36

20MB

NONE

(1) 4M x 36

(1) 1M 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

32MB

NONE

(1) 4M x 36

(1) 4M x 36

32MB

NONE

NONE

(1) 8M x 36

32MB

(4) 4M x 9

NONE

(1) 4M x 36

36MB

(4) 4M x 9

(1) 4M x 36

(1) 1M x 36

36MB

NONE

(1) 8M x 36

(1) 1M x 36

36MB

(4) 1M x 9

NONE

(1) 8M x 36

36MB

(4) 1M x 9

(1) 4M x 36

(1) 4M x 36

40MB

(4) 1M x 9

(1) 8M x 36

(1) 1M x 36

48MB

NONE

(1) 8M x 36

(1) 4M x 36

48MB

(4) 4M x 9

NONE

(1) 8M x 36

48MB

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

64MB

NONE

(1) 8M x 36

(1) 8M x 36

64MB

NONE

NONE

(1) 16M x 36

64MB

(4) 4M x 9

(1) 4M x 36

(1) 8M x 36

64MB

(4) 16M x 9

NONE

NONE

64MB

(4) 4M x 9

(1) 8M x 36

(1) 4M x 36

64MB

(4) 16M x 9

NONE

NONE

65MB

NONE

(1) 16M x 36

(1) 256K x 36

65MB

(4) 256K x 9

NONE

(1) 16M x 36

68MB

NONE

(1) 16M x 36

(1) 1M x 36

72MB

(4) 16M x 9

(1) 1M x 36

(1) 1M x 36

72MB

(4) 1M x 9

(1) 16M x 36

(1) 1M x 36

80MB

NONE

(1) 16M x 36

(1) 4M x 36

80MB

(4) 4M x 9

NONE

(1) 16M x 36

96MB

(4) 16M x 9

(1) 4M x 36

(1) 4M x 36

128MB

NONE

(1) 16M x 36

(1) 16M x 36

128MB

(4) 16M x 9

NONE

(1) 16M x 36

DRAM JUMPER CONFIGURATION

Bank 0

Bank 1

Bank 2

JP33

JP34

JP35

SIMM 1-4

SIMM 6 (S)

SIMM 5 (S)

Open

1 & 2

Open

SIMM 1-4

SIMM 6 (D)

SIMM 5 (S)

Open

1 & 2

Closed

SIMM 1-4

SIMM 6 (S)

SIMM 5 (D)

2 & 3

1 & 2

Open

SIMM 6 (S)

SIMM 5 (S)

SIMM 1-4

1 & 2

2 & 3

Open

SIMM 6 (D)

SIMM 5 (D)

SIMM 1-4

1 & 2

2 & 3

Open

SIMM 6 (D)

SIMM 5 (S)

NONE

1 & 2

2 & 3

Open

SIMM 6 (D)

SIMM 5 (D)

SIMM 1-4

1 & 2

2 & 3

Open

Note:Pins designated should be in the closed positon.

DRAM JUMPER CONFIGURATION (CON’T)

Bank 0

Bank 1

Bank 2

JP36

JP37

JP38

SIMM 1-4

SIMM 6 (S)

SIMM 5 (S)

2 & 3

Open

2 & 3

SIMM 1-4

SIMM 6 (D)

SIMM 5 (S)

2 & 3

2 & 3

Open

SIMM 1-4

SIMM 6 (S)

SIMM 5 (D)

2 & 3

Open

2 & 3

SIMM 6 (S)

SIMM 5 (S)

SIMM 1-4

1 & 2

1 & 2

1 & 2

SIMM 6 (D)

SIMM 5 (D)

SIMM 1-4

1 & 2

1 & 2

1 & 2

SIMM 6 (D)

SIMM 5 (S)

NONE

1 & 2

1 & 2

1 & 2

SIMM 6 (D)

SIMM 5 (D)

SIMM 1-4

1 & 2

1 & 2

1 & 2

Note:Pins designated should be in the closed positon.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

256KB

(4) 64K x 8

NONE

(1) 32K x 8

512KB

(4) 64K x 8

(4) 64K x 8

(1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP4

JP40

JP41

128KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

256KB

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

256KB

1 & 2

2 & 3

1 & 2

1 & 2

1 & 2

512KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

512KB

1 & 2

2 & 3

2 & 3

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP8

JP9

JP10

JP11

JP12

JP13

JP14

JP15

CX486SX

2 & 3

Open

2 & 3

Open

2-3, 4-5

Open

1-2, 3-4

2 & 3

486SX

2 & 3

Open

2 & 3

Open

Open

Open

Open

Open

486SL

1 & 2

Closed

2 & 3

2 & 3

3 & 4

Open

2 & 3

4 & 5

CX486DX

1 & 2

Closed

2 & 3

2 & 3

2 & 3

Open

1-2, 3-4

2 & 3

486DX/DX2

1 & 2

Closed

2 & 3

2 & 3

Open

Open

Open

Open

486DX4

1 & 2

Closed

2 & 3

2 & 3

3 & 4

Open

2 & 3

4 & 5

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)

Type

JP21

JP22

JP24

JP25

JP46

JP48

JP50

CX486SX

1 & 2

2 & 3

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

486SX

2 & 3

1 & 2

1 & 2

Open

2 & 3

2 & 3

2 & 3

486SL

2 & 3

1 & 2

Open

Open

2 & 3

2 & 3

2 & 3

CX486DX

1 & 2

2 & 3

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

486DX/DX2

2 & 3

1 & 2

1 & 2

Open

2 & 3

2 & 3

2 & 3

486DX4

2 & 3

1 & 2

Open

Open

2 & 3

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP5

JP6

JP7

JP20

JP32

JP47

JP49

JP51

20MHz

Closed

Open

Closed

1 & 2

Closed

Open

Open

Open

25MHz

Closed

Closed

Open

1 & 2

Closed

Open

Open

Open

33MHz

Open

Closed

Closed

1 & 2

Closed

Open

Open

Open

40MHz

Closed

Open

Open

2 & 3

Closed

Open

Open

Open

50iMHz

Closed

Closed

Open

1 & 2

Closed

Open

Open

Open

50MHz

Open

Open

Closed

1 & 2

Closed

Open

Open

Open

66iMHz

Open

Closed

Closed

1 & 2

Closed

Open

Open

Open

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION (DX4 ONLY)

Speed

JP5

JP6

JP7

JP20

JP32

JP47

JP49

JP51

25/75MHz

Closed

Closed

Open

1 & 2

Open

2 & 3

1 & 2

Open

33/83MHz

Open

Closed

Closed

1 & 2

Open

2 & 3

Open

Closed

33/100MHz

Open

Closed

Closed

1 & 2

Open

1 & 2

1 & 2

Open

50/100MHz

Open

Open

Closed

1 & 2

Open

1 & 2

2 & 3

Open

Note: Pins designated should be in the closed position.

VESA WAIT STATE CONFIGURATION

Wait states

JP28

0 wait states

pins 1 & 2 closed

1 wait state

pins 2 & 3 closed

VESA BUS SPEED CONFIGURATION

CPU speed

JP29

< = 33MHz

pins 1 & 2 closed

> 33MHz

pins 2 & 3 closed

GREEN PC CONFIGURATION

Description

JP45

Control video HSYNC

pin 1

Ground

pin 2

Control video VSYNC

pin 3

Ground

pin 4

Control ENVIDEO

pin 5

Ground

pin 6

Monitor AC power

pin 7

Ground

pin 8