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                                          

<gopher://bitreich.org/I/th99/m/C-D/35184-1.png>
   

   +------------------------------------------------------------+
   |                        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           |
   +------------------------------------------------------------+