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WD1003A-RA2

WESTERN DIGITAL CORPORATION

WD1003A-RA2

Data bus:

16-bit, ISA

Size:

Full-length, full-height card

Hard drive supported:

Two MFM ST506/412 drives

Floppy drives supported:

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

Maximum heads/cyl.:

16 heads and 2048 cylinders

CONNECTIONS

Function

Location

4-pin connector-drive active LED

CN1

20-pin data cable connector-drive 1

CN2

20-pin data cable connector-drive 0

CN3

34-pin control cable connector-hard drive

CN4

34-pin data cable connector-floppy drive

CN5

USER CONFIGURABLE SETTINGS

Function

Location

Setting

WD11C00C-22 in socket U16

JP1

pins 1 & 2 closed

 

WD11C00-22 in socket U8 & JP5 pins 1 & 2 closed

JP1

pins 2 & 3 closed

Logical translation for drive 0 disabled

JP2

open

 

Logical translation for drive 0 enabled

JP2

closed

Logical translation for drive 1 disabled

JP2A

open

 

Logical translation for drive 1 enabled

JP2A

closed

Not used

JP2B

open

Factory configured - do not alter

JP3 & JP3A

closed

Hard drive port address is 1F0-1F7h

JP4

pins 2 & 3 closed

 

Hard drive port address is 170-177h

JP4

pins 1 & 2 closed

Floppy drive port address is 3F0-3F7h

JP4A

pins 2 & 3 closed

 

Floppy drive port address is 370-377

JP4A

pins 1 & 2 closed

8 head hard drive or RWC (hard-wired)

JP5

pins 1 & 2 closed

 

16 head hard drive supported

JP5

pins 2 & 3 open

Supports 300 or 360 RPM floppy disk drives

JP7

pins 2 & 3 closed

 

Supports dual speed spindle floppy drives

JP7

pins 1 & 2 closed