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       # UNIDENTIFIED
       
          MB-54VP
       
          Processor    Pentium                                           
          Processor    75/90/100MHz                                      
          Speed        
          Chip Set     OPTI                                              
          Max. Onboard 128MB                                             
          DRAM         
          Cache        256/512/1024KB                                    
          BIOS         Award                                             
          Dimensions   330mm x 218mm                                     
          I/O Options  32-bit VESA local bus slots (2), 32-bit PCI slots 
                       (4)                                               
          NPU Options  None                                              
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | External battery  |    J1    | Turbo LED        |   JP40   |
          |-------------------+----------+------------------+----------|
          | Speaker           |   J17    | 32-bit PCI slots |  PC1 -   |
          |                   |          |                  |   PC4    |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   J18    | Reset switch     |    S1    |
          | keylock           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Turbo switch      |   JP39   | 32-bit VESA      |  SL1 &   |
          |                   |          | local bus slots  |   SL2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Monitor type select color        |  JP1   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  JP1   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Fast VESA bus disabled           |  JP3   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Fast VESA bus enabled            |  JP3   |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | End of last T2 enabled           |  JP4   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Beginning of last T2 enabled     |  JP4   |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JP6   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JP6   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | AT clock speed select 3 added    |  JP12  |    Open    |
          |---+----------------------------------+--------+------------|
          |   | AT clock speed select 0 added    |  JP12  |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | End of first T2 enabled          |  JP14  |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Beginning of first T2 enabled    |  JP14  |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | Cache type select always         |  JP17  | pins 1 & 2 |
          |   | invalidated                      |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Cache type select invalidated on |  JP17  | pins 2 & 3 |
          |   | write through                    |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Memory type select mapped I/O at |  JP27  | pins 2 & 3 |
          |   | top of memory                    |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Memory type select 128MB on      |  JP27  | pins 1 & 2 |
          |   | board                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Bus core ratio select 2/3        |  JP32  |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Bus core ratio select 1/2        |  JP32  |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP33  |    N/A     |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP37  |    N/A     |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP38  |    N/A     |
          |   | alter                            |        |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       2MB        |   (2) 256K x 36    |        NONE        |
          |------------------+--------------------+--------------------|
          |       4MB        |   (2) 512K x 36    |        NONE        |
          |------------------+--------------------+--------------------|
          |       4MB        |   (2) 256K x 36    |   (2) 256K x 36    |
          |------------------+--------------------+--------------------|
          |       6MB        |   (2) 256K x 36    |   (2) 512K x 36    |
          |------------------+--------------------+--------------------|
          |       8MB        |    (2) 1M x 36     |        NONE        |
          |------------------+--------------------+--------------------|
          |       8MB        |   (2) 512K x 36    |   (2) 512K x 36    |
          |------------------+--------------------+--------------------|
          |       10MB       |   (2) 256K x 36    |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       12MB       |   (2) 512K x 36    |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 2M x 36     |        NONE        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       18MB       |   (2) 256K x 36    |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       20MB       |   (2) 512K x 36    |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 1M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 4M x 36     |        NONE        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       34MB       |   (2) 256K x 36    |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       36MB       |   (2) 512K x 36    |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 1M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 2M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 8M x 36     |        NONE        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       66MB       |   (2) 256K x 36    |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |       68MB       |   (2) 512K x 36    |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (2) 1M x 36     |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (2) 2M x 36     |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (2) 4M x 36     |    (2) 8M x 36     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 8K x 85  |
          |------------+---------------+---------------+---------------|
          |   512KB    |  (4) 64K x 8  |  (4) 64K x 8  |  (1) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |    1MB     | (4) 128K x 8  | (4) 128K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |     Size     |     JP28      |     JP29     |     JP30     |
          |--------------+---------------+--------------+--------------|
          |    256KB     |     Open      |     Open     |    Closed    |
          |--------------+---------------+--------------+--------------|
          |    512KB     |     Open      |    Closed    |    Closed    |
          |--------------+---------------+--------------+--------------|
          |     1MB      |    Closed     |    Closed    |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 TAG VOLTAGE CONFIGURATION                  |
          |------------------------------------------------------------|
          | Voltage  |   JP2   |       JP18        |       JP23        |
          |----------+---------+-------------------+-------------------|
          |   3.3v   | Closed  | pins 2 & 3 closed | pins 1 & 2 closed |
          |----------+---------+-------------------+-------------------|
          |    5v    |  Open   | pins 1 & 2 closed | pins 2 & 3 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |     Speed     |     JP19     |     JP20     |     JP22     |
          |---------------+--------------+--------------+--------------|
          |     75MHz     |     Open     |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     90MHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    100MHz     |    Closed    |    Closed    |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               VESA WAIT STATE CONFIGURATION                |
          |------------------------------------------------------------|
          |          Wait states          |            JP36            |
          |-------------------------------+----------------------------|
          |         0 wait states         |            Open            |
          |-------------------------------+----------------------------|
          |         1 wait state          |           Closed           |
          +------------------------------------------------------------+