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       # DIGITAL EQUIPMENT CORPORATION
       
          P3100CE
       
          Processor        8088                                          
          Processor Speed  4.77/10MHz                                    
          Chip Set         Unidentified                                  
          Video Chip Set   None                                          
          Maximum Onboard  768KB                                         
          Memory           
          Maximum Video    None                                          
          Memory           
          Cache            None                                          
          BIOS             Unidentified                                  
          Dimensions       240mm x 185mm                                 
          I/O Options      Floppy drive interface, IDE interface,        
                           parallel port, serial ports (2)               
          NPU Options      8087                                          
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose              | Location | Purpose       | Location |
          |----------------------+----------+---------------+----------|
          | Parallel port        |    J7    | IDE interface |    P2    |
          |----------------------+----------+---------------+----------|
          | Serial port 1        |    J8    | Serial port 2 |    P5    |
          |----------------------+----------+---------------+----------|
          | Floppy drive         |    P1    |               |          |
          | interface            |          |               |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          | » | Factory configured - do not     |  P1   | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          |   | NPU not installed               | SW1/1 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | NPU installed                   | SW1/1 |     Off      |
          |---+---------------------------------+-------+--------------|
          |   | One floppy drive installed      | SW1/2 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | Two floppy drives installed     | SW1/2 |     Off      |
          |---+---------------------------------+-------+--------------|
          |   | Parity chips installed          | SW1/3 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | Parity chips not installed      | SW1/3 |     Off      |
          |---+---------------------------------+-------+--------------|
          |   | Monitor type select monochrome  | SW1/4 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | Monitor type select color       | SW1/4 |     Off      |
          |---+---------------------------------+-------+--------------|
          |   | Parallel port enabled           | SW1/5 |     Off      |
          |---+---------------------------------+-------+--------------|
          |   | Parallel port disabled          | SW1/5 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | Serial port 2 enabled           | SW1/6 |     Off      |
          |---+---------------------------------+-------+--------------|
          |   | Serial port 2 disabled          | SW1/6 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | Serial port 1 enabled           | SW1/7 |     Off      |
          |---+---------------------------------+-------+--------------|
          |   | Serial port 1 disabled          | SW1/7 |      On      |
          |---+---------------------------------+-------+--------------|
          |   | IDE interface enabled           | SW1/8 |     Off      |
          |---+---------------------------------+-------+--------------|
          |   | IDE interface disabled          | SW1/8 |      On      |
          |---+---------------------------------+-------+--------------|
          | » | Support for non standard floppy |  W2   |    Closed    |
          |   | drive disabled                  |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Support for non standard floppy |  W2   |     Open     |
          |   | drive enabled                   |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Floppy drive signal operation   |  W6   |    Closed    |
          |   | enabled                         |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Floppy drive signal operation   |  W6   |     Open     |
          |   | disabled                        |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Floppy drive motor type select  |  W7   |    Closed    |
          |   | dual speed spindle              |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Floppy drive motor type select  |  W7   |     Open     |
          |   | single speed spindle            |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Floppy drive pre-compensation   |  W8   |     Open     |
          |   | mode 125ns                      |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Floppy drive pre-compensation   |  W8   |    Closed    |
          |   | mode 187ns                      |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Direction controlled by the     |  W13  |     Open     |
          |   | connected device via SLCT-N     |       |              |
          |   | line                            |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Direction controlled internally |  W13  |    Closed    |
          |---+---------------------------------+-------+--------------|
          | » | Parallel port bidirectional     |  W14  |     Open     |
          |   | disabled                        |       |              |
          |---+---------------------------------+-------+--------------|
          |   | Parallel port bidirectional     |  W14  |    Closed    |
          |   | enabled                         |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Test mode enabled               |  W17  |     Open     |
          |---+---------------------------------+-------+--------------|
          |   | Test mode disabled              |  W17  |    Closed    |
          |------------------------------------------------------------|
          | Note: W13 is used only if W14 is closed.                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |             Size             |           Bank 0            |
          |------------------------------+-----------------------------|
          |            768KB             |            768KB            |
          |------------------------------------------------------------|
          | Note: The size of the memory chips is unidentified.        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       BIOS SELECTION                       |
          |------------------------------------------------------------|
          |         Size         |        W9        |       W10        |
          |----------------------+------------------+------------------|
          |   |       2764       |       Open       |       Open       |
          |---+------------------+------------------+------------------|
          |   |      27128       |       Open       |       Open       |
          |---+------------------+------------------+------------------|
          | » |      27256       |       Open       |      Closed      |
          |---+------------------+------------------+------------------|
          |   |      27512       |      Closed      |      Closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   LOGIC GROUND SELECTION                   |
          |------------------------------------------------------------|
          |               Setting                |   W3   |    W16     |
          |--------------------------------------+--------+------------|
          |     Isolated from chassis ground     |  N/A   |    Open    |
          |--------------------------------------+--------+------------|
          |    Connected with chassis ground     | Closed | Pins 2 & 3 |
          |                                      |        |   closed   |
          |--------------------------------------+--------+------------|
          | Connected to chassis through network |  N/A   | Pins 1 & 2 |
          |                                      |        |   closed   |
          |--------------------------------------+--------+------------|
          | Chassis ground connected depends on  |  Open  |    N/A     |
          |             W16 setting              |        |            |
          +------------------------------------------------------------+