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SY-024B1/B2

SOYO COMPUTER CO., LTD.

SY-024B1/B2

Processor

80386DX/CX486DLC/80486SX/80486DX/ODP486SX/80486DX2

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

None

NPU Options

80387

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J17

External battery

J20

Speaker

J18

Turbo switch

J21

Reset switch

J19

Turbo LED

J22

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome

JP3

Open

 

Monitor type select color

JP3

Closed

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) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U22)

TAG (U23)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

NONE

128KB

(4) 32K x 8

NONE

(1) 8K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

(1) 8K x 8

(1) 8K x 8

CACHE JUMPER CONFIGURATION

Size

JP5

JP6

JP7

JP8

JP9

JP10

64KB

Open

Open

Open

Open

Open

2 & 3

128KB

Closed

Closed

Closed

Open

Open

1 & 2

256KB

Closed

Closed

Closed

Closed

Closed

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP4

JP11

JP12

JP13

JP14

JP15

JP16

JP18

JP31

80386DX

Closed

1 & 2

Open

2 & 3

N/A

N/A

N/A

2 & 3

Closed

CX486DLC

Closed

1 & 2

Closed

2 & 3

N/A

N/A

N/A

2 & 3

Closed

80486SX

N/A

2 & 3

N/A

1 & 2

Open

N/A

2 & 3

1 & 2

Open

80486DX

N/A

2 & 3

N/A

1 & 2

Closed

2 & 3

1 & 2

1 & 2

Open

ODP486SX

N/A

2 & 3

N/A

1 & 2

Open

N/A

1 & 2

1 & 2

Open

80486DX2

N/A

2 & 3

N/A

1 & 2

Closed

2 & 3

1 & 2

1 & 2

Open

Note:Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP24

JP25

JP26

JP27

25MHz

Closed

Open

Closed

Open

33MHz

Closed

Closed

Open

Open

40MHz

Open

Open

Closed

Closed

50iMHz

Closed

Open

Closed

Open

50MHz

Closed

Open

Closed

Closed

66iMHz

Closed

Closed

Open

Open

CPU CLOCK SOURCE CONFIGURATION

Type

JP17

JP19

AV9107-03

Open

Closed

Oscillator installed at OSC1

pins 1 & 2 closed

pins 2 & 3 closed