(TXT) View Source
       
       # 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                                  
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        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 |
          +------------------------------------------------------------+