...because we can't all be on the bleeding edge...





WD1007A-WAH, WD1007A-WA2

WESTERN DIGITAL CORPORATION

WD1007A-WAH, WD1007A-WA2

Data bus: 16-bit, PC/AT

Size: Full-length, full-height card

Hard Drives Supported: Two ESDI drives

Floppy drives supported: WD1007A-WA2: Two 360KB, 720KB, 1.2MB, or 1.44MB

WD1007A-WAH: None

Sector interleave: 1:1

Options: Feature F301R has an optional ROM BIOS with shadow RAM enabling the controller to interface with all types of ESDI drives by bypassing the systems ROM BIOS drive type tables. Feature F300R does not include ROM BIOS option and system ROM BIOS must contain appropriate drive parameters.

.

CONNECTIONS

Function

Location

34-pin control cable connector-hard drive

J1

20-pin data cable connector-drive 0

J2

20-pin data cable connector-drive 1

J3

34-pin data cable connector-floppy drive

J4

4-pin connector-drive active LED

J5

MISCELLANEOUS TECHNICAL NOTES

This controller has a built-in low-level format program. To enter the program run the DEBUG utility supplied with DOS and at the prompt enter: G=C800:5.

USER CONFIGURABLE SETTINGS

Function

Location

Setting

BIOS shadow RAM enabled

W1

closed

 

BIOS shadow RAM disabled

W1

open

Floppy controller enabled (WD1007A-WA2 only)

W4

open

 

Floppy controller disabled (WD1007A-WA2 only)

W4

closed

Single speed floppy drive select (WD1007A-WA2 only)

W5

open

 

Dual speed floppy drive select (WD1007A-WA2 only)

W5

closed

Floppy drive port address is 3F0-3F7h

W6

pins 2 & 3 closed

 

Floppy drive port address is 370-377h

W6

pins 1 & 2 closed

WD1007A-WA2 supports 5.25 & 3.5 floppy drives

W7

closed

WD1007 emulation mode

W8

open

 

WD1005 emulation mode

W8

closed

Chassis ground disconnected

W9

open

 

Digital ground disconnected

W9

pins 1 & 2 closed

 

Chassis ground connected

W9

pins 2 & 3 closed

Digital input register unlatched

W10

open

 

Digital input register latched

W10

closed

Diskette change input signal enabled (WD1007A-WA2 only)

W11

closed

 

Diskette change input signal disabled (WD1007A-WA2 only)

W11

open

Hard drive port address is 1F0-1F7h

W12

open

 

Hard drive port address is 170-177h

W12

closed

Floppy controller enabled (In etch)(WD1007A-WA2 only)

W13

uncut

 

Floppy controller disabled (In etch)(WD1007A-WA2 only)

W13

cut

Sector translation enabled

W14

open

 

Sector translation disabled

W14

closed

ECC length is 4 bytes

W15

open

 

ECC length is 7 bytes

W15

closed

BIOS ADDRESS

Address

W1

W2

W3

C8000-C9FFFh

pins 2 & 3 closed

pins 2 & 3 closed

closed

 

CA000-CBFFFh

pins 2 & 3 closed

pins 1 & 2 closed

closed

 

CC000-CDFFFh

pins 1 & 2 closed

pins 2 & 3 closed

closed

 

CE000-CFFFFh

pins 1 & 2 closed

pins 1 & 2 closed

closed