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       # BIOSTAR MICROTECH INTERNATIONAL CORPORATION
       
          MB-1333C-CH/1340C-CH
       
          Processor             80386DX                                  
          Processor Speed       33/40MHz                                 
          Chip Set              C & T                                    
          Max. Onboard DRAM     32MB                                     
          Cache                 256KB                                    
          BIOS                  C & T                                    
          Dimensions            330mm x 218mm                            
          I/O Options           None                                     
          NPU Options           80387/3167                               
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Turbo LED         |    D4    | Turbo switch     |   J50    |
          |-------------------+----------+------------------+----------|
          | Speaker           |   J18    | Reset switch     |   J51    |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   J19    | External battery |   JP2    |
          | keylock           |          |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Factory configured - do not      |  J21   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | A20 gate enabled                 |  J22   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | A20 gate disabled                |  J22   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select color        |  J23   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  J23   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  J42   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  J42   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Size  |    Bank 0     |    Bank 1     |        J48        |
          |--------+---------------+---------------+-------------------|
          |  1MB   | (4) 256K x 9  |     NONE      | pins 2 & 3 closed |
          |--------+---------------+---------------+-------------------|
          |  2MB   | (4) 256K x 9  | (4) 256K x 9  | pins 2 & 3 closed |
          |--------+---------------+---------------+-------------------|
          |  4MB   |  (4) 1M x 9   |     NONE      | pins 2 & 3 closed |
          |--------+---------------+---------------+-------------------|
          |  5MB   | (4) 256K x 9  |  (4) 1 M x 9  | pins 1 & 2 closed |
          |--------+---------------+---------------+-------------------|
          |  8MB   |  (4) 1M x 9   |  (4) 1M x 9   | pins 2 & 3 closed |
          |--------+---------------+---------------+-------------------|
          |  16MB  |  (4) 4M x 9   |     NONE      | pins 2 & 3 closed |
          |--------+---------------+---------------+-------------------|
          |  17MB  |  (4) 4M x 9   | (4) 256K x 9  | pins 1 & 2 closed |
          |--------+---------------+---------------+-------------------|
          |  20MB  |  (4) 4M x 9   |  (4) 1M x 9   | pins 1 & 2 closed |
          |--------+---------------+---------------+-------------------|
          |  32MB  |  (4) 4M x 9   |  (4) 4M x 9   | pins 2 & 3 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |   Size   |    Bank 0     |   TAG (U8)    | TAG (U14 & U15) |
          |----------+---------------+---------------+-----------------|
          |   64KB   |  (8) 16K x 4  |     NONE      |   (2) 16K x 4   |
          |----------+---------------+---------------+-----------------|
          |  256KB   |  (8) 64K x 4  |  (1) 64K x 4  |   (2) 64K x 4   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |  J25  |  J26  |  J27  |  J28  |  J29  | J33  | J34 |
          |-------+-------+-------+-------+-------+-------+------+-----|
          | 64KB  |Closed |Closed |Closed |Closed |Closed |1 & 2 |1 & 2|
          |-------+-------+-------+-------+-------+-------+------+-----|
          | 256KB | Open  | Open  | Open  | Open  | Open  |2 & 3 |2 & 3|
          |------------------------------------------------------------|
          |Note:Pins designated should be in the closed position.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  POWER GOOD CONFIGURATION                  |
          |------------------------------------------------------------|
          |      Setting       |        J31        |        J32        |
          |--------------------+-------------------+-------------------|
          | Signal detect from | pins 2 & 3 closed | pins 2 & 3 closed |
          |    power supply    |                   |                   |
          |--------------------+-------------------+-------------------|
          | Signal detect from | pins 1 & 2 closed | pins 1 & 2 closed |
          |       board        |                   |                   |
          +------------------------------------------------------------+