SOYO COMPUTER CO., LTD.

SY-022

   

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

20/25/33/50(internal)/50/66(internal)MHz

Chip Set

SIS

Max. Onboard DRAM

128MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

   

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

»

CMOS memory normal operation

JP5

pins 1 & 2 closed

 

CMOS memory clear

JP5

pins 2 & 3 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

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

80MB

(4) 4M x 9

(4) 16M x 9

128MB

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

U35

64KB

(4) 8K x 8

(4) 8K x 8

(2) 16K x 4

(1) 16K x 4

128KB

(4) 32K x 8

NONE

(2) 16K x 4

(1) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(2) 16K x 4

(1) 16K x 4

CACHE JUMPER CONFIGURATION

Size

JP15

JP16

JP17

JP18

JP19

JP20

64KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

3 & 4

128KB

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

256KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

4 & 5

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP12

JP13

JP14

80486SX

pins 2 & 3 closed

Open

Open

80487SX

pins 1 & 2 closed

pins 2 & 3 closed

Open

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

Closed

80486DX2

pins 1 & 2 closed

pins 1 & 2 closed

Closed