COMPUTREND SYSTEMS, INC.
========================

   CONTAQ-386

   Processor          80386DX/80486DX (on MS-4901 daughter board) 
   Processor Speed    25/33/50MHz                                 
   Chip Set           CONTAQ                                      
   Max. Onboard DRAM  32MB                                        
   Cache              64/128/256KB                                
   BIOS               AMI                                         
   Dimensions         330mm x 218mm                               
   I/O Options        Auxiliary keyboard connector                
   NPU Options        80387/3167                                  

<gopher://bitreich.org/I/th99/m/C-D/30189-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          |  Location  | Purpose       |  Location  |
   |------------------+------------+---------------+------------|
   | Power LED &      | J5 pins 1  | Reset switch  | J5 19 & 20 |
   | keylock          |    - 5     |               |            |
   |------------------+------------+---------------+------------|
   | Speaker          | J5 pins 7  | External      |    JP2     |
   |                  |    - 10    | battery       |            |
   |------------------+------------+---------------+------------|
   | Turbo LED        | J5 pins 12 | Auxiliary     |    JP7     |
   |                  |    & 13    | keyboard      |            |
   |------------------+------------+---------------+------------|
   | Turbo switch     | J5 pins 15 |               |            |
   |                  |    - 17    |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | Monitor type select color      |  JP1   |    Closed    |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select monochrome |  JP1   |     Open     |
   |---+--------------------------------+--------+--------------|
   |>> | Battery type select internal   |  JP2   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | Battery type select external   |  JP2   |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       5MB        |     (4) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |    TAG     |  TAG (U1)  |
   |-------+-------------+------------+------------+------------|
   | 64KB  | (4) 8K x 8  | (4) 8K x 8 | (1) 8K x 8 | (1) 16K x  |
   |       |             |            |            |     4      |
   |-------+-------------+------------+------------+------------|
   | 128KB | (4) 32K x 8 |    NONE    | (1) 8K x 8 | (1) 16K x  |
   |       |             |            |            |     4      |
   |-------+-------------+------------+------------+------------|
   | 256KB | (4) 32K x 8 | (4) 32K x  | (1) 32K x  | (1) 16K x  |
   |       |             |     8      |     8      |     4      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |     Size     |      J4A      |     J4B      |     J4C      |
   |--------------+---------------+--------------+--------------|
   |     64KB     |    Closed     |     Open     |     Open     |
   |--------------+---------------+--------------+--------------|
   |    128KB     |     Open      |    Closed    |     Open     |
   |--------------+---------------+--------------+--------------|
   |    256KB     |     Open      |     Open     |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   | Type  | J3A  | J3B  |       JP5       | J6A  | J6B  | JP8  |
   |-------+------+------+-----------------+------+------+------|
   |80386DX|Closed| Open |pins 2 & 3 closed|Closed| Open | Open |
   |-------+------+------+-----------------+------+------+------|
   |80486DX| Open |Closed|pins 1 & 2 closed| Open |Closed|Closed|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                CPU BUS CLOCK CONFIGURATION                 |
   |------------------------------------------------------------|
   |   Type   | Bus Clock |  JP3   |  JP4   |        JP6        |
   |----------+-----------+--------+--------+-------------------|
   | 80386DX  |  CLK2/4   | Closed | Closed | pins 1 & 2 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80386DX  |  CLK2/6   |  Open  | Closed | pins 1 & 2 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80386DX  |  CLK2/8   | Closed |  Open  | pins 1 & 2 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80386DX  |  CLK2/10  |  Open  |  Open  | pins 1 & 2 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80386DX  |  7.2MHz   |  N/A   |  N/A   | pins 2 & 3 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80486DX  | Reserved  |  Open  |  Open  | pins 1 & 2 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80486DX  |   CLK/3   |  Open  | Closed | pins 1 & 2 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80486DX  |   CLK/4   | Closed |  Open  | pins 1 & 2 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80486DX  |   CLK/6   | Closed | Closed | pins 1 & 2 closed |
   |----------+-----------+--------+--------+-------------------|
   | 80486DX  |  7.2MHz   |  N/A   |  N/A   | pins 2 & 3 closed |
   +------------------------------------------------------------+