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

[Image]

                                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      Clock    Multiplier     J21       J22       J25        J27
  speed     speed

  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