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SY-045A2/A5

SOYO TECHNOLOGY CO., LTD.

SY-045A2/A5

Processor

80486SX/80486SX2/CX486DX/U5S/80486DX/CX486DX2/AM486DX2/ 80486DX2/AM486DX4/80486DX4/P24D/Pentium Overdrive

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

256MB

Cache

256/512/1024KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slot, 32-bit PCI slots (4), IDE interfaces (2), parallel port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Reset switch

J19

Serial port 2

CN2

External battery

J20

Parallel port

CN3

Turbo switch

J21

Floppy drive interface

CN4

Turbo LED

J22

IDE interface (primary)

CN5

IDE interface LED (secondary)

JP17

IDE interface (secondary)

CN6

IDE interface LED (primary)

JP18

Power LED & keylock

J17

32-bit PCI slots

PCI1 - PCI4

Speaker

J18

32-bit VESA local bus slot

SL1

Note: The locations of J19, J21, and J22 are unidentified.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

J7

Open

Factory configured - do not alter

JP1

N/A

Factory configured - do not alter

JP2

N/A

Monitor type select color

JP3

Closed

 

Monitor type select monochrome

JP3

Open

Factory configured - do not alter

JP4

N/A

CMOS memory normal operation

JP5

pins 1 & 2 closed

 

CMOS memory clear

JP5

pins 2 & 3 closed

Factory configured - do not alter

JP6

Closed

Factory configured - do not alter

JP7

Open

Factory configured - do not alter

JP12

pins 1 & 2 closed

Factory configured - do not alter

JP13

N/A

CPU signal type select SMOUT

JP15

pins 1 & 2 closed

 

CPU signal type select STPCLK

JP15

pins 2 & 3 closed

Factory configured - do not alter

JP19

N/A

Factory configured - do not alter

JP27

pins 2 & 3 closed

Factory configured - do not alter

JP28

pins 2 & 3 closed

Note: The locations of JP1, JP2, JP3, JP4, JP13, JP19, and JP29 are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

2MB

(1) 512K x 36

NONE

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 256K x 36

(1) 1M x 36

NONE

NONE

6MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

NONE

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

12MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

16MB

(1) 4M x 36

NONE

NONE

NONE

17MB

(1) 256K x 36

(1) 4M x 36

NONE

NONE

20MB

(1) 512K x 36

(1) 512K x 36

(1) 4M x 36

NONE

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

24MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 4M x 36

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

NONE

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

NONE

DRAM CONFIGURATION (CONT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 8M x 36

NONE

NONE

NONE

36MB

(1) 512K x 36

(1) 512K x 36

(1) 4M x 36

(1) 4M x 36

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

36MB

(1) 1M x 36

(1) 8M x 36

NONE

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

NONE

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

48MB

(1) 4M x 36

(1) 8M x 36

NONE

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 16M x 36

NONE

NONE

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

NONE

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

65MB

(1) 256K x 36

(1) 16M x 36

NONE

NONE

68MB

(1) 1M x 36

(1) 16M x 36

NONE

NONE

68MB

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

NONE

70MB

(1) 16M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

72MB

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

NONE

72MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

80MB

(1) 4M x 36

(1) 16M x 36

NONE

NONE

80MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

NONE

88MB

(1) 16M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

96MB

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

NONE

96MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

NONE

112MB

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

128MB

(1) 16M x 36

(1) 16M x 36

NONE

NONE

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

132MB

(1) 16M x 36

(1) 16M x 36

(1) 512K x 36

(1) 512K x 36

144MB

(1) 16M x 36

(1) 16M x 36

(1) 2M x 36

(1) 2M x 36

160MB

(1) 16M x 36

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

160MB

(1) 16M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

192MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

NONE

192MB

(1) 16M x 36

(1) 16M x 36

(1) 8M x 36

(1) 8M x 36

194MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

(1) 512K x 36

200MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

(1) 2M x 36

208MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

(1) 4M x 36

224MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

(1) 8M x 36

256MB

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

(1) 16M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

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) 32K x 8

(1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 64K x 8

CACHE JUMPER CONFIGURATION

Size

JP25

JP26

JP29

256KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

256KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

512KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

512KB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

1MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP30

JP31

JP32

JP33

JP34

JP36

80486SX

3 & 4

Open

2 & 3

Open

Open

Open

80486SX2

3 & 4

Open

2 & 3

Open

Open

Open

CX486DX (5v)

2 & 3

3 & 4

1 & 2, 3 & 4

2 & 3

Open

Open

U5S

Open

1 & 2, 3 & 4

1 & 2, 3 & 4

3 & 4

Open

Open

80486DX

3 & 4

3 & 4

1 & 2, 3 & 4

Open

Open

Open

CX486DX2 (3.6v)

2 & 3

3 & 4

1 & 2, 3 & 4

2 & 3

Open

Open

CX486DX2 (4v)

2 & 3

3 & 4

1 & 2, 3 & 4

2 & 3

Open

Open

CX486DX2 (5v)

2 & 3

3 & 4

1 & 2, 3 & 4

2 & 3

Open

Open

AM486DX2 (3.45v)

3 & 4

3 & 4

1 & 2, 3 & 4

Open

2 & 3

Open

AM486DX2 (5v)

3 & 4

3 & 4

1 & 2, 3 & 4

Open

2 & 3

Open

AM486DX2

3 & 4

3 & 4

1 & 2, 3 & 4

Open

2 & 3

1 & 2

80486DX2

3 & 4

3 & 4

1 & 2, 3 & 4

Open

Open

Open

AM486DX4 (3.45v)

3 & 4

3 & 4

1 & 2, 3 & 4

Open

1 & 2

Open

AM486DX4

3 & 4

3 & 4

1 & 2, 3 & 4

Open

1 & 2

1 & 2

80486DX4

3 & 4

3 & 4

1 & 2, 3 & 4

Open

Open

Open

P24D

1 & 2, 3 & 4

3 & 4

1 & 2, 3 & 4

Open

1 & 2

Open

Pentium Overdrive

3 & 4

2 & 3

1 & 2, 3 & 4

1 & 2

Open

1 & 2

Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CONT)

Type

JP37

JP38

JP39

JP40

JP41

80486SX

4 & 5

Open

Open

1 & 2, 3 & 4

Open

80486SX2

4 & 5

Open

Open

1 & 2, 3 & 4

Open

CX486DX (5v)

2 & 3

2 & 3

Open

1 & 2, 3 & 4

Open

U5S

Open

Open

Open

1 & 2, 3 & 4

Open

80486DX

4 & 5

Open

Open

1 & 2, 3 & 4

Open

CX486DX2 (3.6v)

2 & 3

2 & 3

3 & 4

3 & 4, 5 & 6

Open

CX486DX2 (4v)

2 & 3

2 & 3

5 & 6

3 & 4, 5 & 6

Open

CX486DX2 (5v)

2 & 3

2 & 3

Open

1 & 2, 3 & 4

Open

AM486DX2 (3.45v)

4 & 5

Open

1 & 2

1 & 2, 3 & 4

Open

AM486DX2 (5v)

4 & 5

Open

1 & 2

1 & 2, 3 & 4

Open

AM486DX2

4 & 5

Open

1 & 2

3 & 4, 5 & 6

2 & 3

80486DX2

4 & 5

Open

Open

1 & 2, 3 & 4

Open

AM486DX4 (3.45v)

4 & 5

Open

1 & 2

1 & 2, 3 & 4

Open

AM486DX4

4 & 5

Open

1 & 2

3 & 4, 5 & 6

2 & 3

80486DX4

4 & 5

Open

1 & 2

3 & 4, 5 & 6

Open

P24D

4 & 5

1 & 2

Open

1 & 2, 3 & 4

1 & 2

Pentium Overdrive

1 & 2

1 & 2

Open

1 & 2, 3 & 4

Open

Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CONT)

Type

JP42

JP43

JP44

JP45

JP46

80486SX

2 & 3

Open

1 & 2

1 & 2

1 & 2

80486SX2

2 & 3

Open

1 & 2

1 & 2

1 & 2

CX486DX (5v)

2 & 3

Open

Open

1 & 2

1 & 2

U5S

2 & 3

Open

1 & 2

2 & 3

4 & 5

80486DX

2 & 3

Open

1 & 2

1 & 2

2 & 3

CX486DX2 (3.6v)

2 & 3

Open

Open

1 & 2

1 & 2

CX486DX2 (4v)

2 & 3

Open

Open

1 & 2

1 & 2

CX486DX2 (5v)

2 & 3

Open

Open

1 & 2

1 & 2

AM486DX2 (3.45v)

2 & 3

Open

1 & 2

1 & 2

2 & 3

AM486DX2 (5v)

2 & 3

Open

1 & 2

1 & 2

2 & 3

AM486DX2

2 & 3

Open

4 & 5

1 & 2

2 & 3

80486DX2

2 & 3

Open

1 & 2

1 & 2

2 & 3

AM486DX4 (3.45v)

2 & 3

Open

1 & 2

1 & 2

2 & 3

AM486DX4

2 & 3

Open

4 & 5

1 & 2

2 & 3

80486DX4

2 & 3

Open

1 & 2

1 & 2

2 & 3

P24D

1 & 2

Open

2 & 3

1 & 2

2 & 3

Pentium Overdrive

1 & 2

Open

Open

1 & 2

2 & 3

Note: Pins designated should be in closed position.

CPU SPEED CONFIGURATION

Speed

JP14

JP21

JP22

25MHz

pins 1 & 2 closed

Open

Open

33MHz

pins 1 & 2 closed

Closed

Closed

40MHz

pins 1 & 2 closed

Closed

Open

50iMHz

pins 1 & 2 closed

Open

Open

66iMHz

pins 1 & 2 closed

Closed

Closed

75iMHz

pins 1 & 2 closed

Open

Open

80iMHz

pins 1 & 2 closed

Closed

Open

100iMHz

pins 1 & 2 closed

Closed

Closed

DRQ/DACK CONFIGURATION

DRQ/DACK

JP8

JP9

JP10

JP11

None

Open

Open

Open

Open

DRQ3/DACK3

Closed

Open

Open

Closed

DRQ7/DACK7

Open

Closed

Closed

Open