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WD1003A-WA2

WESTERN DIGITAL CORPORATION

WD1003A-WA2

Chipset

Western Digital

Data Bus

16-bit ISA

Card Size

Full height, full length

Hard Drives Supported

Two ST506/412(MFM) devices

Floppy Drives Supported

Two 360KB or 1.2MB drives

CONNECTIONS

Function

Label

Function

Label

2-pin drive active LED

J1

34-pin control cable connector - hard drive

J4

20-pin data cable connector - drive 2

J2

34-pin cable connector - floppy drive

J5

20-pin data cable connector - drive 1

J3

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Factory configured - do not alter

W1

Pins 1 & 2 closed

Factory configured - do not alter

W2/A

Open

Factory configured - do not alter

W2/B

Open

Factory configured - do not alter

W2/C

Open

RWC-NOT signal enabled

W5

Pins 1 & 2 closed

 

RWC-NOT signal disabled, HS3-NOT signal enabled

W5

Pins 2 & 3 closed

Factory configured - do not alter

W6

Unidentified

Factory configured - do not alter

W7

Open

Note:W6 may not be present on all versions of this board.

HARD DRIVE 1 TYPE SELECTION

Setting

W3

Standard

Pins 1 & 2 closed

 

SyQuest

Pins 1 & 2 open

HARD DRIVE 2 TYPE SELECTION

Setting

W3

Standard

Pins 3 & 4 closed

 

SyQuest

Pins 3 & 4 open

HARD DRIVE ADDRESS SELECTION

Setting

W4

Primary

Pins 3 & 5 closed

 

Secondary

Pins 1 & 3 closed

FLOPPY DRIVE ADDRESS SELECTION

Setting

W4

Primary

Pins 4 & 6 closed

 

Secondary

Pins 2 & 4 closed