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

   WD386SX-LPX

   Processor        80386SX                                       
   Processor Speed  16/20MHz                                      
   Chip Set         WD                                            
   Max. Onboard     32MB                                          
   DRAM             
   Cache            None                                          
   BIOS             AMI/Award                                     
   Dimensions       330mm x 218mm                                 
   I/O Options      Parallel port, serial port (2), floppy drive  
                    interface, IDE interface, VGA port, bus mouse 
                    port, IBM video interface, proprietary bus    
                    expansion slot                                
   NPU Options      80387SX                                       

<gopher://bitreich.org/I/th99/m/U-Z/30677-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | Proprietary bus  |    J1    | Parallel port     |   J10    |
   | expansion card   |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Mouse port       |    J4    | IBM video         |   J11    |
   |                  |          | interface         |          |
   |------------------+----------+-------------------+----------|
   | Reset switch     |    J6    | VGA port          |   J12    |
   |------------------+----------+-------------------+----------|
   | Floppy drive     |    J7    | IDE interface     |   J14    |
   | interface        |          |                   |          |
   |------------------+----------+-------------------+----------|
   | Serial port 2    |    J8    | Keyswitch/IDE     |   J15    |
   |                  |          | interface LED     |          |
   |------------------+----------+-------------------+----------|
   | Serial port 1    |    J9    | External speaker  |   J17    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |   W1   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |   W1   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   W2   |    Open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   W3   |   Closed   |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Mouse interrupt enabled IRQ12    |   W4   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Mouse interrupt disabled IRQ12   |   W4   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |   W5   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |   W5   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | VGA clock select internal        |   W6   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | VGA clock select external        |   W6   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | VGA port enabled                 |   W7   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | VGA port disabled                |   W7   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select multisync    |   W8   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select fixed        |   W8   | pins 1 & 2 |
   |   | frequency                        |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select AT           |   W9   | pins 2 & 3 |
   |   | compatible                       |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select PS/2         |   W9   | pins 1 & 2 |
   |   | compatible                       |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Speaker select internal          |  W10   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Speaker select external          |  W10   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | IDE interface LED enabled        |  W11   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | IDE interface LED disabled       |  W11   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
   |-------+-------------+------------+------------+------------|
   |  1MB  | (2) 256K x  | (2) 256K x |    NONE    |    NONE    |
   |       |      9      |     9      |            |            |
   |-------+-------------+------------+------------+------------|
   |  2MB  | (2) 256K x  | (2) 256K x | (2) 256K x | (2) 256K x |
   |       |      9      |     9      |     9      |     9      |
   |-------+-------------+------------+------------+------------|
   | 2.5MB | (2) 256K x  | (2) 1M x 9 |    NONE    |    NONE    |
   |       |      9      |            |            |            |
   |-------+-------------+------------+------------+------------|
   |  4MB  | (2) 1M x 9  | (2) 1M x 9 |    NONE    |    NONE    |
   |-------+-------------+------------+------------+------------|
   |  5MB  | (2) 256K x  | (2) 256K x | (2) 1M x 9 | (2) 1M x 9 |
   |       |      9      |     9      |            |            |
   |-------+-------------+------------+------------+------------|
   |  8MB  | (2) 1M x 9  | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
   +------------------------------------------------------------+