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WD286-WDM2

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.