...because we can't all be on the bleeding edge...





SY-25 J/K/L

SOYO COMPUTER CO., LTD.

SY-25 J/K/L

Processor

CX486S/80486SX/CX486DX/AM486DX/SL80486DX/AM486DX2/ 80486DX2/AM486DX4/80486DX4/P24D/P24T

Processor Speed

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

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

128MB (EDO supported)

Maximum Video Memory

None

Cache

64/128/256KB

BIOS

Award

Dimensions

254mm x 218mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J17

Turbo LED

J22

Speaker

J18

Green PC connector

JP4

Reset switch

J19

Green PC connector

JP6

External battery

J20

Green PC connector

JP7

Turbo switch

J21

32-bit VESA local bus slots

SL1 – SL3

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Monitor type select monochrome

JP3

Open

 

Monitor type select color/EGA/VGA

JP3

Closed

»

CMOS memory normal operation

JP5

Pins 1 & 2 closed

 

CMOS memory clear

JP5

Pins 2 & 3 closed

»

Factory configured - do not alter

JP17

Pins 1 & 2 closed

»

Factory configured - do not alter

JP27

Pins 1 & 2 closed

»

Factory configured - do not alter

JP32

Pins 1 & 2 closed

»

Factory configured - do not alter

JP34

Unidentified

SIMM CONFIGURATION 1

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

None

None

2MB

(4) 256K x 9

(1) 256K x 36

None

4MB

(4) 1M x 9

None

None

5MB

(4) 256K x 9

(1) 1M x 36

None

6MB

(4) 256K x 9

(1) 256K x 36

(1) 1M x 36

8MB

(4) 1M x 9

(1) 1M x 36

None

12MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

16MB

(4) 4M x 9

None

None

17MB

(4) 256K x 9

(1) 4M x 36

None

18MB

(4) 256K x 9

(1) 256K x 36

(1) 4M x 36

20MB

(4) 1M x 9

(1) 4M x 36

None

24MB

(4) 1M x 9

(1) 1M x 36

(1) 4M x 36

32MB

(4) 4M x 9

(1) 4M x 36

None

36MB

(4) 1M x 9

(1) 4M x 36

(1) 4M x 36

48MB

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

64MB

(4) 16M x 9

None

None

65MB

(4) 256K x 9

(1) 16M x 36

None

68MB

(4) 1M x 9

(1) 16M x 36

None

72MB

(4) 1M x 9

(1) 1M x 36

(1) 16M x 36

80MB

(4) 4M x 9

(1) 16M x 36

None

96MB

(4) 4M x 9

(1) 4M x 36

(1) 16M x 36

128MB

(4) 16M x 9

(1) 16M x 36

None

SIMM CONFIGURATION 2

Size

Bank 0

Bank 1

Bank 2

1MB

None

(1) 256K x 36

None

2MB

None

(1) 256K x 36

(1) 256K x 36

2MB

None

(1) 512K x 36

None

4MB

None

(1) 512K x 36

(1) 512K x 36

4MB

None

(1) 1M x 36

None

5MB

None

(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

8MB

None

(1) 1M x 36

(1) 1M x 36

8MB

None

(1) 2M x 36

None

12MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

12MB

None

(1) 1M x 36

(1) 2M x 36

16MB

None

(1) 2M x 36

(1) 2M x 36

16MB

None

(1) 4M x 36

None

17MB

None

(1) 256K x 36

(1) 4M x 36

18MB

(4) 4M x 9

(1) 256K x 36

(1) 256K x 36

18MB

None

(1) 512K x 36

(1) 4M x 36

20MB

None

(1) 1M x 36

(1) 4M x 36

24MB

(4) 4M x 9

(1) 1M x 36

(1) 1M x 36

32MB

None

(1) 4M x 36

(1) 4M x 36

32MB

None

(1) 8M x 36

None

36MB

(4) 4M x 9

(1) 1M x 36

(1) 4M x 36

36MB

None

(1) 1M 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

64MB

None

(1) 8M x 36

(1) 8M x 36

65MB

None

(1) 256K x 36

(1) 16M x 36

68MB

None

(1) 1M x 36

(1) 16M x 36

72MB

(4) 16M x 9

(1) 1M x 36

(1) 1M x 36

80MB

None

(1) 4M x 36

(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

Note: Board also accepts x 32 SIMMs.

SIMM JUMPER CONFIGURATION

Configuration

JP35

JP36

JP37

1

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

2

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

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

256KB (A)

(4) 32K x 8

(4) 32K x 8

(1) 16K/32K x 8

256KB (B)

(4) 64K x 8

None

(1) 16K/32K x 8

CACHE JUMPER CONFIGURATION

Size

JP9

JP10

JP13

64KB

Pins 2 & 3 closed

Open

Pins 1 & 2 closed

128KB

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

256KB (A)

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

256KB (B)

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

CPU SPEED SELECTION

Speed

JP29

JP30

JP31

25MHz

Closed

Open

Closed

33MHz

Open

Closed

Closed

40MHz

Closed

Open

Open

50iMHz

Closed

Open

Closed

50MHz

Open

Closed

Open

66iMHz

Open

Closed

Closed

75iMHz

Closed

Open

Closed

80iMHz

Closed

Open

Open

100iMHz

Open

Closed

Closed

CPU TYPE SELECTION

Type

JP1

JP2

JP11

JP12

JP14

CX 486S

1 & 2

2 & 3

2 & 3

1 & 2

1 & 2

80486SX

2 & 3

1 & 2

3 & 4

2 & 3

2 & 3

CX 486DX

1 & 2

2 & 3

2 & 3

1 & 2

1 & 2

AM486DX

2 & 3

1 & 2

3 & 4

2 & 3

3 & 4

SL80486DX

2 & 3

1 & 2

3 & 4

2 & 3

3 & 4

AM486DX2

2 & 3

1 & 2

3 & 4

2 & 3

3 & 4

80486DX2

2 & 3

1 & 2

3 & 4

2 & 3

3 & 4

AM486DX4

2 & 3

1 & 2

3 & 4

2 & 3

3 & 4

80486DX4

2 & 3

1 & 2

3 & 4

2 & 3

3 & 4

80486DX4 (ODP)

2 & 3

1 & 2

3 & 4

2 & 3

3 & 4

P24D

1 & 2

1 & 2

1 & 2, 3 & 4

2 & 3

1 & 2, 3 & 4

P24T

2 & 3

1 & 2

3 & 4

2 & 3

3 & 4

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)

Type

JP15

JP16

JP18

JP19

CX 486S

2 & 3

Open

2 & 3

2 & 3

80486SX

Open

Open

2 & 3

4 & 5

CX 486DX

2 & 3

Open

2 & 3

2 & 3

AM486DX

2 & 3

Open

2 & 3

4 & 5

SL80486DX

2 & 3

Open

2 & 3

4 & 5

AM486DX2

2 & 3

Open

2 & 3

4 & 5

80486DX2

2 & 3

Open

2 & 3

4 & 5

AM486DX4

2 & 3

Open

2 & 3

4 & 5

80486DX4

2 & 3

Open

2 & 3

4 & 5

80486DX4 (ODP)

2 & 3

Open

2 & 3

4 & 5

P24D

2 & 3

Closed

1 & 2

4 & 5

P24T

1 & 2

Open

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)

Type

JP20

JP21

JP22

JP23

CX 486S

Open

Open

2 & 3

2 & 3

80486SX

Open

1 & 2

Open

Open

CX 486DX

Open

Open

2 & 3

2 & 3

AM486DX

Open

1 & 2

Open

Open

SL80486DX

Open

1 & 2

Open

Open

AM486DX2

2 & 3

1 & 2

Open

Open

80486DX2

Open

1 & 2

Open

Open

AM486DX4

1 & 2

1 & 2

Open

Open

80486DX4

Open

1 & 2

Open

Open

80486DX4 (ODP)

Open

1 & 2

Open

Open

P24D

1 & 2

2 & 3

1 & 2

Open

P24T

Open

Open

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

JP24

3.45v

Pins 3 & 5, 4 & 6 closed

5v

Pins 1 & 3, 2 & 4 closed