WESTERN DIGITAL CORPORATION

WD1007A-WX2

Card Type

Hard drive controller card

Hard Drives supported

Two ESDI drives

Floppy drives supported

Two 360KB, 720KB, 1.2MB, or 1.44MB

Data Bus

16-bit ISA

Card Size

Three-quarter length, full-height card

CONNECTIONS

Function

Location

Function

Location

34-pin control cable connector-hard drive

J1

34-pin data cable connector-floppy drive

J4

20-pin data cable connector-drive 0

J2

4-pin connector-drive active LED

J5

20-pin data cable connector-drive 1

J3

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured (BIOS enabled)

W3

Closed

»

Factory configured (floppy drive controller)

W4

Open

»

Factory configured (single spindle speed select)

W5

Open

»

Floppy drive port address is 3F0-3F7h

W6

Pins 2 & 3 closed

 

Floppy drive port address is 370-377h

W6

Pins 1 & 2 closed

»

Factory configured (floppy drive select)

W7

Pins 1 & 2 closed

»

WD1007 emulation mode

W8

Open

 

WD1005 emulation mode

W8

Closed

»

Factory configured (chassis ground disconnected)

W9

Open

»

Digital input register unlatched

W10

Open

 

Digital input register latched

W10

Closed

»

Factory configured (floppy change enable with FDC option)

W11

Closed

»

Factory configured (secondary address select)

W12

Open

»

Floppy controller enabled (diskette drive controller enabled in etch)

W13

Uncut

»

Sector translation enabled

W14

Open

 

Sector translation disabled

W14

Closed

»

Factory configured (ECC length is 4 bytes)

W15

Open

BIOS ADDRESS SELECTION

Address

W1

W2

»

C8000-C9FFFh

Pins 2 & 3 closed

Pins 2 & 3 closed

 

CA000-CBFFFh

Pins 2 & 3 closed

Pins 1 & 2 closed

 

CC000-CDFFFh

Pins 1 & 2 closed

Pins 2 & 3 closed

 

CE000-CFFFFh

Pins 1 & 2 closed

Pins 1 & 2 closed

MISCELLANEOUS TECHNICAL INFORMATION

The WD1007A supports 1:1 interleave drives with up to 2048 cylinders and 16 heads.