WESTERN DIGITAL CORPORATION

WD1003V-MM1/MM2, WD1006V-MM1/MM2

Replaces the WD1003-WAH/WA2

and WD1006-WAH/WA2 respectively

Data bus: 16-bit, PC/AT

Size: Full-length, full-height card

Hard drives supported: Two MFM ST506/412 drives

Floppy drives supported: WD100xV-MM2:Two 360KB, 720KB, 1.2MB, or 1.44MB

WD100xV-MM1:None

Maximum heads/cyl.: 16 heads and 2048 cylinders

[Image]

                           CONNECTIONS

                  Function                        Location

  34-pin data cable connector-floppy drive           J1

  20-pin data cable connector-drive 1                J3

  20-pin data cable connector-drive 0                J4

  34-pin control cable connector-hard drive          J5

  4-pin connector-drive active LED                   J6

                        USER CONFIGURABLE SETTINGS

                Function                     Location         Setting

  Hard drives in latched mode              W1/jumper 1          open

  Hard drives in non-latched mode          W1/jumper 1         closed

  4 byte ECC                               W1/jumper 2          open

  7 byte ECC                               W1/jumper 2         closed

  Caching enabled                          W1/jumper 3          open

  Caching disabled                         W1/jumper 3         closed

  Not WD1003-WAH/WA2 compatible            W1/jumper 4          open

  WD1003-WAH/WA2 compatible                W1/jumper 4         closed

  Hard drive port address is 1F0-1F7h           W3              open

  Hard drive port address is 170-177h           W3             closed

  Floppy drive port address is 3F0-3F7h         W4              open

  Floppy drive port address is 370-377h         W4             closed

  Single speed floppy drive supported           W5              open

  Dual speed floppy drive supported             W5             closed

  Bracket ground option disabled                W6              open

  Bracket to board ground connected             W6             closed