WESTERN DIGITAL CORPORATION
===========================

   WD1003S-WA4

   +------------------------------------------------------------+
   +------------------------------------------------------------+

   Data bus: 16-bit, ISA

   Size: Full-length, half-height card

   Hard drives supported:  Two ST506/412 MFM drives

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

<gopher://bitreich.org/I/th99/c/U-Z/20298-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                   Function                   |  Location   |
   |----------------------------------------------+-------------|
   | 34-pin control cable connector-hard drive    |     CN1     |
   |----------------------------------------------+-------------|
   | 20-pin data cable connector-drive 0          |     CN2     |
   |----------------------------------------------+-------------|
   | 20-pin data cable connector-drive 1          |     CN3     |
   |----------------------------------------------+-------------|
   | 34-pin data cable connector-floppy drive     |     CN4     |
   |----------------------------------------------+-------------|
   | 4-pin connector-drive active LED             |     CN5     |
   |----------------------------------------------+-------------|
   | DB-9 serial port 1 connector-external        |     CN6     |
   |----------------------------------------------+-------------|
   | DB-25 parallel port connector-external       |     CN7     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE JUMPERS                  |
   |------------------------------------------------------------|
   |            Function            |   Location   |  Setting   |
   |--------------------------------+--------------+------------|
   |>> | Floppy drive port address  |     JP1      | pins 3 & 4 |
   |   | is 3F0-3F7h                |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Floppy drive disabled      |     JP1      | pins 2 & 3 |
   |   |                            |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Floppy drive port address  |     JP1      | pins 1 & 2 |
   |   | is 370-377h                |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Hard drive port address is |     JP2      | pins 2 & 3 |
   |   | 1F0-1F7h                   |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Hard drive port address is |     JP2      | pins 2 & 3 |
   |   | 170-177h                   |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Parallel port is set for   | JP3 and JP3A | pins 1 & 2 |
   |   | LPT1                       |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Parallel port disabled     | JP3 and JP3A | pins 2 & 3 |
   |   |                            |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Parallel port is set for   | JP3 and JP3A | pins 3 & 4 |
   |   | LPT2                       |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Serial port is set for     | JP4 and JP4A | pins 1 & 2 |
   |   | COM1                       |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Serial port is disabled    | JP4 and JP4A | pins 2 & 3 |
   |   |                            |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Serial port is set for     | JP4 and JP4A | pins 3 & 4 |
   |   | COM2                       |              |   closed   |
   +------------------------------------------------------------+