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

   DC 486 EISA

   Processor             80486SX/80487SX/80486DX/80486DX2         
   Processor Speed       20/25/33/50(internal)/50/66(internal)MHz 
   Chip Set              OPTI                                     
   Max. Onboard DRAM     128MB                                    
   Cache                 64/128/256KB                             
   BIOS                  AMI                                      
   Dimensions            330.2mm x 218.4mm                        
   I/O Options           None                                     
   NPU Options           4167                                     

<gopher://bitreich.org/I/th99/m/C-D/31234-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Speaker             |    J4    | Reset switch   |    S9    |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |    J5    | Turbo switch   |    SW    |
   |---------------------+----------+----------------+----------|
   | Turbo LED           |   LED    |                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | Monitor type select color      |  JP4   |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select monochrome |  JP4   |     open     |
   |---+--------------------------------+--------+--------------|
   |>> | CPU speed select 25/33/50MHz   |  JP6   |     open     |
   |---+--------------------------------+--------+--------------|
   |   | CPU speed select 20MHz         |  JP6   |    closed    |
   |---+--------------------------------+--------+--------------|
   |>> | CPU speed select iOSC/1        |  JP8   |  pins 1 & 2  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | CPU speed select iOSC/2        |  JP8   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              EISA BUS CONTROLLER SPEED SELECT              |
   |------------------------------------------------------------|
   |   Speed    |     JP1     |     JP2     |        JP3        |
   |------------+-------------+-------------+-------------------|
   |   20MHz    |    open     |   closed    | pins 2 & 3 closed |
   |------------+-------------+-------------+-------------------|
   |   25MHz    |    open     |    open     | pins 1 & 2 closed |
   |------------+-------------+-------------+-------------------|
   |   33MHz    |   closed    |    open     | pins 1 & 2 closed |
   |------------+-------------+-------------+-------------------|
   |   40MHz    |    open     |   closed    | pins 1 & 2 closed |
   |------------+-------------+-------------+-------------------|
   |   50Mhz    |   closed    |   closed    | pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   | Jumper |  80486SX   |       80487SX       | 80486DX or DX2 |
   |--------+------------+---------------------+----------------|
   |  JP7   | pins 2 & 3 | pins 1 & 2 and 3 &  | pins 1 & 2 and |
   |        |   closed   |      4 closed       |  3 & 4 closed  |
   |--------+------------+---------------------+----------------|
   |  JP9   |    open    |  pins 1 & 2 closed  |   pins 2 & 3   |
   |        |            |                     |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |   Size    |         Bank 0         |        Bank 1         |
   |-----------+------------------------+-----------------------|
   |    4MB    |       (4) 1M x 9       |         NONE          |
   |-----------+------------------------+-----------------------|
   |    8MB    |       (4) 1M x 9       |      (4) 1M x 9       |
   |-----------+------------------------+-----------------------|
   |   16MB    |       (4) 4M x 9       |         NONE          |
   |-----------+------------------------+-----------------------|
   |   20MB    |       (4) 1M x 9       |      (4) 4M x 9       |
   |-----------+------------------------+-----------------------|
   |   32MB    |       (4) 4M x 9       |      (4) 4M x 9       |
   |-----------+------------------------+-----------------------|
   |   64MB    |      (4) 16M x 9       |         NONE          |
   |-----------+------------------------+-----------------------|
   |   68MB    |       (4) 1M x 9       |      (4) 16M x 9      |
   |-----------+------------------------+-----------------------|
   |   80MB    |       (4) 4M x 9       |      (4) 16M x 9      |
   |-----------+------------------------+-----------------------|
   |   128MB   |      (4) 16M x 9       |      (4) 16M x 9      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Jumper |      64KB       |     128KB      |     256KB      |
   |--------+-----------------+----------------+----------------|
   |  JP5   |   pins 2 & 3    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  JP10  |      open       |      open      |      open      |
   |--------+-----------------+----------------+----------------|
   |  JP11  |      open       |      open      |     closed     |
   |--------+-----------------+----------------+----------------|
   |  JP12  |      open       |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  JP13  |      open       |      open      |     closed     |
   |--------+-----------------+----------------+----------------|
   |  JP14  |      open       |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  JP15  |      open       |      open      |      open      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  | Cache  | Location |  TAG   |  TAG  |  TAG  | Dirty |
   |       |        |          | (U49)  | (U50) | (U51) |  bit  |
   |       |        |          |        |       |       | (U64) |
   |-------+--------+----------+--------+-------+-------+-------|
   | 64KB  | (8) 8K | Banks 0  | (1) 4K |  (1)  | NONE  |  (1)  |
   |       |  x 8   |   & 1    |  x 1   | 8K x  |       | 64K x |
   |       |        |          |        |   8   |       |   1   |
   |-------+--------+----------+--------+-------+-------+-------|
   | 128KB |  (4)   |  Bank 0  |  (1)   |  (1)  | NONE  |  (1)  |
   |       | 32K x  |          | 64K x  | 8K x  |       | 64K x |
   |       |   8    |          |   1    |   8   |       |   1   |
   |-------+--------+----------+--------+-------+-------+-------|
   | 256KB |  (8)   | Banks 0  |  (1)   |  (1)  |  (1)  |  (1)  |
   |       | 32K x  |   & 1    | 64K x  | 8K x  | 8K x  | 64K x |
   |       |   8    |          |   1    |   8   |   8   |   1   |
   +------------------------------------------------------------+