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SY-027 B2/B5

SOYO TECHNOLOGY CO., LTD.

SY-027 B2/B5

Processor

80486SX/SL80486SX/CX486DX/U5/AM486DXL/80486DX/SL80486DX/ CX486DX2/AM486DX2/AM486DXL2/80486DX2/SL80486DX2/AM486DX4/ 80486DX4/Pentium Overdrive

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)100(internal)MHz

Chip Set

Unidentified

Max. Onboard DRAM

64MB

Cache

128/256

BIOS

Award

Dimensions

220mm x 220mm

I/O Options

32-bit PCI slots (4), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

IDE interface

J1

Turbo switch

J21

Power LED & keylock

J17

Turbo LED

J22

Speaker

J18

IDE interface LED

JP28

Reset switch

J19

Green PC connector

JW6

External battery

J20

32-bit PCI slots

PCI1 - PCI4

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP32

Closed

CMOS memory normal operation

JP33

Open

 

CMOS memory clear

JP33

Closed

Factory configured - do not alter

JP65

Open

Note: The location of JP32 is unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(1) 512K x 36

NONE

4MB

(1) 512K x 36

(1) 512K x 36

4MB

(1) 1M x 36

NONE

6MB

(1) 1M x 36

(1) 512K x 36

8MB

(1) 1M x 36

(1) 1M x 36

8MB

(1) 2M x 36

NONE

10MB

(1) 2M x 36

(1) 512K x 36

12MB

(1) 2M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

16MB

(1) 4M x 36

NONE

18MB

(1) 4M x 36

(1) 512K x 36

20MB

(1) 4M x 36

(1) 1M x 36

24MB

(1) 4M x 36

(1) 2M x 36

32MB

(1) 4M x 36

(1) 4M x 36

32MB

(1) 8M x 36

NONE

34MB

(1) 8M x 36

(1) 512K x 36

36MB

(1) 8M x 36

(1) 1M x 36

40MB

(1) 8M x 36

(1) 2M x 36

48MB

(1) 8M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

TAG

128KB

(4) 32K x 8

(1) 8K x 8

256KB

(4) 64K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP26

128KB

Open

256KB

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JP6

JP9

JP10

JP13

JP23

JP24

80486SX

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

SL80486SX

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

CX486DX

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

U5

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

80486DX

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

AM486DXL

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

SL80486DX

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

CX486DX2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

AM486DX2

2 & 3

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

80486DX2

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

AM486DXL2

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

SL80486DX2

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

AM486DX4

2 & 3

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

80486DX4

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

P24D

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

P24T

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CONT)

Type

JP52

JP53

JP54

JP55

JP56

JP57

80486SX

Open

Open

Open

Open

Open

Open

SL80486SX

Open

Open

Open

Open

1 & 2

Open

CX486DX

2 & 3

Open

Open

1 & 2

1 & 2

2 & 3

U5

3 & 4

Open

Open

Open

2 & 3

Open

80486DX

Open

Open

Open

Open

Open

Open

AM486DXL

3 & 4

Open

Open

Open

2 & 3

Open

SL80486DX

Open

Open

Open

Open

1 & 2

Open

CX486DX2

2 & 3

Open

Open

1 & 2

1 & 2

2 & 3

AM486DX2

Open

Open

Open

Open

Open

Open

80486DX2

Open

Open

Open

Open

Open

Open

AM486DXL2

3 & 4

Open

Open

Open

2 & 3

Open

SL80486DX2

Open

Open

Open

Open

1 & 2

Open

AM486DX4

Open

Open

Open

Open

Open

Open

80486DX4

Open

Open

Open

Open

1 & 2

Open

P24D

Open

Closed

Closed

Open

1 & 2

Open

P24T

1 & 2

Open

Open

2 & 3

1 & 2

1 & 2

Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CONT)

Type

JP58

JP59

JP60

JP62

JP63

JP64

80486SX

Open

Open

Open

Open

2 & 3

1 & 2

SL80486SX

1 & 2

2 & 3, 4 & 5

Open

Open

2 & 3

3 &4

CX486DX

2 & 3

1 & 2, 3 & 4

Open

3 & 4

1 & 2, 3 & 4

3 &4

U5

Open

Open

Open

1 & 2, 3 & 4

2 & 3

1 & 2

80486DX

Open

Open

Open

3 & 4

1 & 2, 3 & 4

1 & 2

AM486DXL

Open

Open

Open

1 & 2, 3 & 4

1 & 2, 3 & 4

1 & 2

SL80486DX

1 & 2

2 & 3, 4 & 5

Open

3 & 4

1 & 2, 3 & 4

3 &4

CX486DX2

2 & 3

1 & 2, 3 & 4

Open

3 & 4

1 & 2, 3 & 4

3 &4

AM486DX2

Open

Open

Open

3 & 4

1 & 2, 3 & 4

1 & 2

80486DX2

Open

Open

Open

3 & 4

1 & 2, 3 & 4

1 & 2

AM486DXL2

Open

Open

Open

1 & 2, 3 & 4

1 & 2, 3 & 4

1 & 2

SL80486DX2

1 & 2

2 & 3, 4 & 5

Open

3 & 4

1 & 2, 3 & 4

3 &4

AM486DX4

Open

Open

Open

3 & 4

1 & 2, 3 & 4

1 & 2

80486DX4

1 & 2

2 & 3, 4 & 5

Open

3 & 4

1 & 2, 3 & 4

3 &4

P24D

1 & 2

2 & 3, 4 & 5

Closed

3 & 4

1 & 2, 3 & 4

3 &4

P24T

1 & 2

2 & 3, 4 & 5

Open

2 & 3

1 & 2, 3 & 4

3 & 4, 5 & 6

Note: Pins designated should be in closed position.

CPU SPEED CONFIGURATION

Speed

JP22

25MHz

pins 1 & 2 closed

33MHz

pins 1 & 2, 3 & 4, 5 & 6 closed

40MHz

pins 1 & 2, 3 & 4 closed

50iMHz

pins 1 & 2 closed

50MHz

pins 5 & 6 closed

66iMHz

pins 1 & 2, 3 & 4, 5 & 6 closed

75iMHz

pins 1 & 2 closed

80iMHz

pins 1 & 2, 3 & 4 closed

100iMHz

pins 5 & 6 closed

CPU SPEED CONFIGURATION (AM486 ONLY)

Speed

JP61

2x

pins 2 & 3 closed

3x

pins 1 & 2 closed

CPU SPEED CONFIGURATION (80486DX4 ONLY)

Speed

JP51

2x

pins 2 & 3 closed

2.5x

pins 1 & 2 closed

3x

Open