DASH COMPUTER, INC.
===================

   DC-486SX 25/33/50

   Processor             80486SX/80487SX/80486DX                  
   Processor Speed       20/25/33/50MHz                           
   Chip Set              OPTI                                     
   Max. Onboard DRAM     32MB                                     
   Cache                 64/256KB                                 
   BIOS                  AMI                                      
   Dimensions            330mm x 218mm                            
   I/O Options           32-bit external memory card slot         
   NPU Options           4167                                     

<gopher://bitreich.org/I/th99/m/C-D/30286-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | External battery  |   J10    | 32-bit external  |    S1    |
   |                   |          | memory card      |          |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   J23    | Reset switch     |   SW1    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |   J24    | Turbo switch     |   SW2    |
   |-------------------+----------+------------------+----------|
   | Turbo LED         |   JP12   |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | Monitor type select color      |  JP1   |    Closed    |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select monochrome |  JP1   |     Open     |
   |---+--------------------------------+--------+--------------|
   |>> | CMOS memory normal operation   |  JP2   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | CMOS memory clear              |  JP2   |  pins 1 & 2  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |>> | Bus speed select ATCLK/6       |  JP3   |    Closed    |
   |---+--------------------------------+--------+--------------|
   |   | Bus speed select ATCLK/4       |  JP3   |     Open     |
   |---+--------------------------------+--------+--------------|
   |>> | CPU speed select OSC/2         |  JP4   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | CPU speed select OSC/1         |  JP4   |  pins 1 & 2  |
   |   |                                |        |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size  |     Bank 0     |  Bank 1   |  Bank 2   |  Bank 3  |
   |--------+----------------+-----------+-----------+----------|
   |  4MB   |   (4) 1M x 9   |   NONE    |   NONE    |   NONE   |
   |--------+----------------+-----------+-----------+----------|
   |  8MB   |   (4) 1M x 9   | (4) 1M x  |   NONE    |   NONE   |
   |        |                |     9     |           |          |
   |--------+----------------+-----------+-----------+----------|
   |  12MB  |   (4) 1M x 9   | (4) 1M x  | (4) 1M x  |   NONE   |
   |        |                |     9     |     9     |          |
   |--------+----------------+-----------+-----------+----------|
   |  16MB  |   (4) 1M x 9   | (4) 1M x  | (4) 1M x  | (4) 1M x |
   |        |                |     9     |     9     |    9     |
   |--------+----------------+-----------+-----------+----------|
   |  16MB  |   (4) 4M x 9   |   NONE    |   NONE    |   NONE   |
   |--------+----------------+-----------+-----------+----------|
   |  20MB  |   (4) 1M x 9   | (4) 4M x  |   NONE    |   NONE   |
   |        |                |     9     |           |          |
   |--------+----------------+-----------+-----------+----------|
   |  24MB  |   (4) 1M x 9   | (4) 1M x  | (4) 4M x  |   NONE   |
   |        |                |     9     |     9     |          |
   |--------+----------------+-----------+-----------+----------|
   |  28MB  |   (4) 1M x 9   | (4) 1M x  | (4) 1M x  | (4) 4M x |
   |        |                |     9     |     9     |    9     |
   |--------+----------------+-----------+-----------+----------|
   |  32MB  |   (4) 4M x 9   | (4) 4M x  |   NONE    |   NONE   |
   |        |                |     9     |           |          |
   |--------+----------------+-----------+-----------+----------|
   |  36MB  |   (4) 1M x 9   | (4) 4M x  | (4) 4M x  |   NONE   |
   |        |                |     9     |     9     |          |
   |--------+----------------+-----------+-----------+----------|
   |  40MB  |   (4) 1M x 9   | (4) 1M x  | (4) 4M x  | (4) 4M x |
   |        |                |     9     |     9     |    9     |
   |--------+----------------+-----------+-----------+----------|
   |  48MB  |   (4) 4M x 9   | (4) 4M x  | (4) 4M x  |   NONE   |
   |        |                |     9     |     9     |          |
   |--------+----------------+-----------+-----------+----------|
   |  52MB  |   (4) 1M x 9   | (4) 4M x  | (4) 4M x  | (4) 4M x |
   |        |                |     9     |     9     |    9     |
   |--------+----------------+-----------+-----------+----------|
   |  64MB  |   (4) 4M x 9   | (4) 4M x  | (4) 4M x  | (4) 4M x |
   |        |                |     9     |     9     |    9     |
   |------------------------------------------------------------|
   | Note:Banks 2 & 3 are used when a 32-bit external memory    |
   | card is installed at S1.                                   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |            Size            |            Bank 0             |
   |----------------------------+-------------------------------|
   |            64KB            |          (9) 8K x 8           |
   |----------------------------+-------------------------------|
   |           256KB            |          (9) 32K x 8          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |   Size    |    JP8     |    JP9    |   JP10    |   JP11    |
   |-----------+------------+-----------+-----------+-----------|
   |   64KB    |    Open    |   Open    |   Open    |   Open    |
   |-----------+------------+-----------+-----------+-----------|
   |   256KB   |   Closed   |  Closed   |  Closed   |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type   |        JP5        |        JP6        |   JP7   |
   |----------+-------------------+-------------------+---------|
   | 80486SX  |       Open        | pins 2 & 3 closed | Closed  |
   |----------+-------------------+-------------------+---------|
   | 80487SX  | pins 1 & 2 closed | pins 1 & 2 closed | Closed  |
   |----------+-------------------+-------------------+---------|
   | 80486DX  | pins 2 & 3 closed | pins 1 & 2 closed | Closed  |
   +------------------------------------------------------------+