WESTERN DIGITAL CORPORATION

WD1003V-MM1/MM2, WD1006V-MM1/MM2

Replaces the WD1003-WAH/WA2

and WD1006-WAH/WA2 respectively

Data bus: 16-bit, PC/AT

Size: Full-length, full-height card

Hard drives supported: Two MFM ST506/412 drives

Floppy drives supported: WD100xV-MM2:Two 360KB, 720KB, 1.2MB, or 1.44MB

WD100xV-MM1:None

Maximum heads/cyl.: 16 heads and 2048 cylinders

CONNECTIONS

Function

Location

34-pin data cable connector-floppy drive

J1

20-pin data cable connector-drive 1

J3

20-pin data cable connector-drive 0

J4

34-pin control cable connector-hard drive

J5

4-pin connector-drive active LED

J6

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Hard drives in latched mode

W1/jumper 1

open

Hard drives in non-latched mode

W1/jumper 1

closed

4 byte ECC

W1/jumper 2

open

7 byte ECC

W1/jumper 2

closed

Caching enabled

W1/jumper 3

open

Caching disabled

W1/jumper 3

closed

Not WD1003-WAH/WA2 compatible

W1/jumper 4

open

WD1003-WAH/WA2 compatible

W1/jumper 4

closed

Hard drive port address is 1F0-1F7h

W3

open

Hard drive port address is 170-177h

W3

closed

Floppy drive port address is 3F0-3F7h

W4

open

Floppy drive port address is 370-377h

W4

closed

Single speed floppy drive supported

W5

open

Dual speed floppy drive supported

W5

closed

Bracket ground option disabled

W6

open

Bracket to board ground connected

W6

closed