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WD1006-WAH (VER. 2)

WESTERN DIGITAL CORPORATION

WD1006-WAH (VER. 2)

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

None

CONNECTIONS

Function

Label

Function

Label

4-pin drive active LED

J1

20-pin data cable connector - drive 1

J3

20-pin data cable connector - drive 2

J2

34-pin control cable connector - hard drive

J4

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Drives up to 16 heads supported; reduced write current disabled

W1

Pins 1 & 2 closed

 

Drives up to 8 heads supported; reduced write current enabled

W1

Pins 2 & 3 closed

Card uses primary I/O address

W3

Pins 1 & 2 closed

 

Card uses secondary I/O address

W3

Pins 2 & 3 closed

Factory configured - do not alter

W5

Open

Factory configured - do not alter

W6

Open

Factory configured - do not alter

W7

Open

Factory configured - do not alter

W8

Open

Hard drive caching enabled

W9

Open

 

Hard drive caching disabled

W9

Closed

Signal ground not connected to chassis ground

W11

Open

 

Signal ground connected to chassis ground

W11

Closed

WAIT STATE SELECTION

Setting

W2/A

W2/B

W2/C

Disabled

Open

Open

Open

0 wait states

Closed

Open

Open

 

1 wait state

Open

Closed

Open

 

2 wait states

Open

Open

Closed

Note:On some versions of this board (designated F001), wait state circuitry is not included. Set these boards to the Disabled setting. All other boards should be set to one of the other three settings.

DRIVE LED CONFIGURATION

Setting

W4

W10

Non-latched; LED is on when drive is active

Closed

Open

Latched; LED is on when drive is not active

Open

Closed