SOYO COMPUTER CO., LTD.

386DX BOARD

Processor

80386DX

Processor Speed

33/40MHz

Chip Set

ETEQ

Max. Onboard DRAM

16MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387/3167

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

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 256K x 9

(4) 4M x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

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

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J4

J6

J7

J8

J9

J10

64KB

Open

Open

1 & 2

1 & 2

2 & 3

Open

128KB

Open

Closed

1 & 2

2 & 3

2 & 3

Open

256KB

Open

Closed

2 & 3

2 & 3

2 & 3

Open

Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CON’T)

Size

J11

J12

J13

J14

J15

64KB

Closed

Open

Open

1 & 2

1 & 2

128KB

Closed

Open

Closed

1 & 2

4 & 5

256KB

Closed

Closed

Closed

1 & 2

5 & 6

Note: Pins designated should be in the closed position.