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WD1006-WAH, WD1006S-WAH

WESTERN DIGITAL CORPORATION

WD1006-WAH, WD1006S-WAH

Replaced by the WD1006V-MM1

Data bus: 16-bit, ISA

Size: WD1006S-WAH: Full-length, half-height card

WD1006-WAH: Half-length, full-height card

Hard drives supported: Two MFM ST506/412 drives

Floppy drives supported: None

Sector interleave: 1:1

Maximum heads/cyl.: 16 heads and 2048 cylinders

The WD1006-WAH

The WD1006S WAH

CONNECTIONS

Function

Location

4-pin connector-drive active LED

J1

20-pin data cable connector-drive 0

J2

20-pin data cable connector-drive 1

J3

34-pin control cable connector-hard drive

J4

USER CONFIGURABLE SETTINGS-WD1006-WAH

Function

Location

Setting

 

16 head hard drive supported

W1

pins 1 & 2 closed

8 head hard drive and RWC supported

W1

pins 2 & 3 closed

Hard drive port address is 1F0-1F7h

W3

pins 1 & 2 closed

 

Hard drive port address is 170-177h

W3

pins 2 & 3 closed

 

Drive LED is not latched, W10 must be open

W4

closed

 

Reserved for WD1006-RAH

W5 to W8

open

 

Enable caching

W9

open

 

Disable caching

W9

closed

Non-latched mode

W10

open

 

Latched mode

W10

closed

 

Isolates mounting bracket from board

W11

open

 

Connects bracket to board ground

W11

closed

USER CONFIGURABLE SETTINGS-WD1006S WAH

Function

Location

Setting

 

Etch on solder side connects pins 1 & 2. LED lights for drive selection. Remove W6 if W1 is installed.

W1

closed

 

Drive LED is latched

W1

open

16 heads. No reduced write current

W2

pins 1 & 2 closed

 

8 heads. Reduced write current

W2

pins 2 & 3 closed

Enable caching

W3

open

 

Disable caching

W3

closed

 

Isolate mounting bracket from board

W4

open

 

Connects mounting bracket to board

W4

closed

Hard drive address is 1F0-1F7h (hard wired)

W5

pins 1 & 2 closed

 

Hard drive port address is 170-177h

W5

pins 2 & 3 closed

Non-latched mode

W6

open

 

Latched mode

W6

closed

WAIT STATE JUMPER - WD1006-WAH

(F002 ONLY, F001 DOES NOT SUPPORT WAIT STATES)

State

W2/jumper 1

W2/jumper 2

W2/jumper 3

Zero Wait State enabled

closed

open

open

One Wait State enabled

open

closed

open

Two Wait States enabled

open

open

closed

MISCELLANEOUS TECHNICAL NOTES

Not all jumpers are present. You must solder those that are not present.

There are two versions of the WD1006S-WAH: the F001 and the F002. The F001 has caching firmware but no wait state generator; F002 has caching firmware with a wait state generator.