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391WB/H

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.