UNIDENTIFIED

391WB/H

Processor

80386DX/AMD80386DX

Processor Speed

33/40MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

80387DX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Reset switch

J4

Speaker

J2

Turbo switch

J5

Turbo LED

J3

External battery

JP13

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Turbo mode disabled

J5

Closed

 

Turbo mode enabled

J5

Open

»

NPU asynchronous with CPU

JP8

Closed

 

NPU synchronous with CPU

JP8

Open

»

I/O bus speed select ATCLK/6

JP9

Open

 

I/O bus speed select ATCLK/8

JP9

Closed

»

Monitor type select monochrome

JP12

Open

 

Monitor type select color

JP12

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

20MB

(4) 1M x 9

(4) 4M x 9

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

32KB

(4) 8K x 8

NONE

(1) 8K x 8

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

JP1

JP2

JP3

JP4

JP5

JP6

JP14

JP15

JP16

JP17

32KB

1 & 2

1 & 2

1 & 2

Open

Open

Open

2 & 3

1 & 2

1 & 2

1 & 2

64KB

1 & 2

1 & 2

2 & 3

Open

Open

Closed

2 & 3

1 & 2

1 & 2

1 & 2

128KB

2 & 3

1 & 2

2 & 3

Closed

Open

Closed

2 & 3

1 & 2

1 & 2

1 & 2

256KB

2 & 3

2 & 3

2 & 3

Closed

Closed

Closed

2 & 3

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.