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       # BIOSTAR MICROTECH INTERNATIONAL CORPORATION
       
          MB-1333C-CH/1340C-CH (B)
       
          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 |
          |------------------+----------+-------------------+----------|
          | External battery |   JP2    | Power LED &       |   J19    |
          |                  |          | keylock           |          |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |    D4    | Turbo switch      |   J50    |
          |------------------+----------+-------------------+----------|
          | Speaker          |   J18    | Reset switch      |   J51    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Factory configured - do not      |  J21   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Fast gate A20 enabled            |  J22   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Fast gate A20 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       |
          |------------------+--------------------+--------------------|
          |       1MB        |    (4) 256K x 9    |        NONE        |
          |------------------+--------------------+--------------------|
          |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
          |------------------+--------------------+--------------------|
          |       4MB        |     (4) 1M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       5MB        |    (4) 256K x 9    |    (4) 1 M 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     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM JUMPER CONFIGURATION                  |
          |------------------------------------------------------------|
          |            Size            |              J48              |
          |----------------------------+-------------------------------|
          |            1MB             |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |            2MB             |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |            4MB             |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |            5MB             |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |            8MB             |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |            16MB            |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |            17MB            |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |            20MB            |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |            32MB            |       pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |   Size    |    Bank 0     |      TAG      |  TAG location  |
          |-----------+---------------+---------------+----------------|
          |   64KB    |  (8) 16K x 4  |  (2) 16K x 4  |   U14 & U15    |
          |-----------+---------------+---------------+----------------|
          |   256KB   |  (8) 64K x 4  |  (3) 64K x 4  | U8 & U14 & U15 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 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        |                   |                   |
          +------------------------------------------------------------+