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       # DIGITAL EQUIPMENT CORPORATION
       
          VENTURIS PENTIUM (VER. 2.0)
       
          Device Type      Mainboard                                     
          Processor        Pentium                                       
          Processor Speed  75/90/100/120/133/150/166/180/200MHz          
          Chip Set         Unidentified                                  
          Video Chip Set   S3                                            
          Maximum Onboard  128MB                                         
          Memory           
          Maximum Video    Unidentified                                  
          Memory           
          Cache            256KB                                         
          BIOS             Unidentified                                  
          Dimensions       254mm x 218mm                                 
          I/O Options      Floppy drive interface, IDE interfaces (2),   
                           parallel port, PS/2 mouse port, serial ports  
                           (2), VGA port, riser slot                     
          NPU Options      None                                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | VGA port         |   CN1    | Floppy drive      |   CN6    |
          |                  |          | interface         |          |
          |------------------+----------+-------------------+----------|
          | Parallel port    |   CN2    | IDE interface     |   CN7    |
          |------------------+----------+-------------------+----------|
          | Serial port      |   CN3    | IDE interface     |   CN8    |
          |------------------+----------+-------------------+----------|
          | Serial port      |   CN4    | Riser slot        |   SL1    |
          |------------------+----------+-------------------+----------|
          | PS/2 mouse port  |   CN5    |                   |          |
          |------------------------------------------------------------|
          | Note: VGA & serial ports are shown for informational       |
          | purposes only. The location may not be exact.              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              | Label |   Position    |
          |------------------------------------+-------+---------------|
          | » | Recovery mode normal operation |  J10  |     Open      |
          |---+--------------------------------+-------+---------------|
          |   | Recovery mode enabled          |  J10  |    Closed     |
          |---+--------------------------------+-------+---------------|
          | » | Password normal operation      |  J11  |     Open      |
          |---+--------------------------------+-------+---------------|
          |   | Password memory clear          |  J11  |    Closed     |
          |---+--------------------------------+-------+---------------|
          | » | CMOS memory normal operation   |  J16  |  Pins 1 & 2   |
          |   |                                |       |    closed     |
          |---+--------------------------------+-------+---------------|
          |   | CMOS memory clear              |  J16  |  Pins 2 & 3   |
          |   |                                |       |    closed     |
          |---+--------------------------------+-------+---------------|
          |   | Boot block disabled            |  J32  |  Pins 2 & 3   |
          |   |                                |       |    closed     |
          |---+--------------------------------+-------+---------------|
          |   | Boot block enabled             |  J32  |  Pins 1 & 2   |
          |   |                                |       |    closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       8MB        |    (2) 1M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 2M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 2M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 4M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 4M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 4M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 8M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (2) 8M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (2) 8M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (2) 8M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          | Note: Board is factory installed with 256KB cache. The     |
          | location is unidentified.                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          | Note: The location & size of the video memory is           |
          | unidentified.                                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |CPU speed|Clock speed|Multiplier| J21  | J22  | J25  | J27  |
          |---------+-----------+----------+------+------+------+------|
          |  75MHz  |   50MHz   |   1.5x   | Open | Open | Open | Open |
          |---------+-----------+----------+------+------+------+------|
          |  90MHz  |   60MHz   |   1.5x   | Open |Closed| Open | Open |
          |---------+-----------+----------+------+------+------+------|
          | 100MHz  |   66MHz   |   1.5x   |Closed|Closed| Open | Open |
          |---------+-----------+----------+------+------+------+------|
          | 120MHz  |   60MHz   |    2x    | Open |Closed| Open |Closed|
          |---------+-----------+----------+------+------+------+------|
          | 133MHz  |   66MHz   |    2x    |Closed|Closed| Open |Closed|
          |---------+-----------+----------+------+------+------+------|
          | 150MHz  |   60MHz   |   2.5x   | Open |Closed|Closed|Closed|
          |---------+-----------+----------+------+------+------+------|
          | 166MHz  |   66MHz   |   2.5x   |Closed|Closed|Closed|Closed|
          |---------+-----------+----------+------+------+------+------|
          | 180MHz  |   60MHz   |    3x    | Open |Closed|Closed| Open |
          |---------+-----------+----------+------+------+------+------|
          | 200MHz  |   66MHz   |    3x    |Closed|Closed|Closed| Open |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU VOLTAGE SELECTION                    |
          |------------------------------------------------------------|
          |            Voltage            |            J35             |
          |-------------------------------+----------------------------|
          |           Standard            |            Open            |
          |-------------------------------+----------------------------|
          |              VRE              |           Closed           |
          +------------------------------------------------------------+