WESTERN DIGITAL CORPORATION

WD286-WDM2

Processor

80286

Processor Speed

12.5MHz

Chip Set

Faraday

Max. Onboard DRAM

16MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Parallel port, serial porst (2), PS/2 mouse port, floppy drive interface, ST506/412 interface, video interface, IDE interface

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

IDE interface (optional)

J5

Floppy drive interface

J16

Hard drive access LED

J10

ST506/412 drive control

J17

Reset switch

J11

Serial port 1

J19

ST506/412 data (Drive 0)

J12

Serial port 2

J20

ST506/412 data (Drive 1)

J13

Video interface

J21

Power LED & keylock

J14

PS/2 mouse port

J22

Parallel port (LPT1)

J15

Speaker

J24

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Factory configured - do not alter

W2

N/A

»

Factory configured - do not alter

W4

Open

»

Factory configured - do not alter

W6

Open

»

Factory configured - do not alter

W7

pins 1 & 2 closed

»

Floppy drive IRQ6 enabled

W8

Closed

 

Floppy drive IRQ6 disabled

W8

Open

»

Factory configured - do not alter

W9

N/A

»

Keyboard configuration XT compatible

W12

Closed

 

Keyboard configuration AT compatible

W12

Open

»

Video IRQ9 enabled

W13

Closed

 

Video IRQ9 disabled

W13

Open

»

Factory configured - do not alter

W14

N/A

»

Factory configured - do not alter

W15

N/A

»

Factory configured - do not alter

W16

N/A

»

Mouse IRQ12 enabled

W17

Closed

 

Mouse IRQ12 disabled

W17

Open

»

LPT1 (J15) IRQ7 enabled

W19

Closed

 

LPT1 (J15) IRQ7 disabled

W19

Open

»

COM2 (J20) IRQ3 enabled

W20

Closed

 

COM2 (J20) IRQ3 disabled

W20

Open

»

COM1 (J19) IRQ4 enabled

W21

Closed

 

COM1 (J19) IRQ4 disabled

W21

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

10MB

(2) 1M x 9

(2) 4M x 9

16MB

(2) 4M x 9

(2) 4M x 9

VIDEO JUMPER CONFIGURATION

Internal video only

Monitor type

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

W18

Monochrome

Off

Off

On

Off

Off

Closed

CGA-40 columns

On

Off

Off

On

Off

Open

CGA-80 columns

Off

Off

Off

On

Off

Open

EGA-200 lines

On

On

On

Off

Off

Open

EGA-350/480 lines

Off

On

On

Off

Off

Open

Internal video as primary-color/External video as secondary-monochrome

Color monitor type

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

W18

CGA-40 columns

On

Off

Off

On

Off

Open

CGA-80 columns

Off

Off

Off

On

Off

Open

EGA-200 lines

On

On

On

Off

Off

Open

EGA-350/480 lines

Off

On

On

Off

Off

Open

Internal video as secondary-color/External video as primary-monochrome

Color monitor type

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

W18

CGA-40 columns

On

On

On

On

Off

Open

CGA-80 columns

Off

On

On

On

Off

Open

EGA-200 lines

On

Off

On

On

Off

Open

EGA-350/480 lines

Off

Off

On

On

Off

Open

Internal video as primary-monochrome/External video as secondary-color

Color monitor type

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

W18

CGA-40 columns

On

Off

On

Off

Off

Open

CGA-80 columns

Off

Off

On

Off

Off

Open

Internal video as secondary-monochrome/External video as primary-color

Color monitor type

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

W18

CGA-40 columns

On

On

Off

On

Off

open

CGA-80 columns

Off

On

Off

On

Off

open

HARD DRIVE CONFIGURATION

Drive type

W1

W3

W5

W10

W11

W22

ST506/412

Closed

Closed

Closed

Open

Open

Open

IDE

Open

Open

Open

Closed

Closed

Closed

External

Open

Open

Open

Open

Open

Open

Note:An external hard drive may be used secondary to the ST506/412 with the ST506/412 jumper

settings.