(TXT) View Source
       
       # DIGITAL EQUIPMENT CORPORATION
       
          DECPC LPV, DECPC LPV+
       
          Processor        80486SX/80486DX/80486DX2                      
          Processor Speed  25/33/40/50(internal)/50/66(internal)MHz      
          Chip Set         Unidentified                                  
          Video Chip Set   None                                          
          Maximum Onboard  64MB                                          
          Memory           
          Maximum Video    None                                          
          Memory           
          Cache            128/256KB                                     
          BIOS             Unidentified                                  
          Dimensions       254mm x 218mm                                 
          I/O Options      Floppy drive interface, IDE interface,        
                           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    | IDE interface      |   CN6    |
          |-----------------+----------+--------------------+----------|
          | Parallel port   |   CN2    | Floppy drive       |   CN7    |
          |                 |          | interface          |          |
          |-----------------+----------+--------------------+----------|
          | Serial port     |   CN3    | Front panel        |   CN8    |
          |                 |          | connector          |          |
          |-----------------+----------+--------------------+----------|
          | Serial port     |   CN4    | Cache slot         |   SL1    |
          |-----------------+----------+--------------------+----------|
          | PS/2 mouse port |   CN5    |                    |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | Reset switch enabled              |  J9   |   Closed   |
          |---+-----------------------------------+-------+------------|
          |   | Reset switch disabled             |  J9   |    Open    |
          |---+-----------------------------------+-------+------------|
          | » | RDY signal select VLRDY >CPURDY   |  J10  | Pins 1 & 2 |
          |   | (connects through CPU bus)        |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | RDY signal select VLRDY >CPURDY   |  J10  | Pins 2 & 3 |
          |   | (synchronized through chipset)    |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | On board video enabled            |  J23  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | On board video disabled           |  J23  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | VGA IRQ9 disabled                 |  J25  |    Open    |
          |---+-----------------------------------+-------+------------|
          |   | VGA IRQ9 enabled                  |  J25  |   Closed   |
          |---+-----------------------------------+-------+------------|
          | » | Flash BIOS normal operation       |  J27  |    Open    |
          |---+-----------------------------------+-------+------------|
          |   | Flash BIOS recovery mode          |  J27  |   Closed   |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter |  J28  |    Open    |
          |---+-----------------------------------+-------+------------|
          | » | Monitor type select monochrome    |  J29  |    Open    |
          |---+-----------------------------------+-------+------------|
          |   | Monitor type select color         |  J29  |   Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 12MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |    None    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 4M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 20MB | (1) 1M x 36 | (1) 4M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |    None    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    None    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     None      | Unidentified  |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  | Unidentified  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |     J3      |     J4     |     J6     |     J7     |
          |-------+-------------+------------+------------+------------|
          | None  |    Open     |    Open    |    Open    |    Open    |
          |-------+-------------+------------+------------+------------|
          | 128KB | Pins 1 & 2  | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
          |       |   closed    |   closed   |   closed   |   closed   |
          |-------+-------------+------------+------------+------------|
          | 256KB | Pins 2 & 3  | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
          |       |   closed    |   closed   |   closed   |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |     Speed     |     J18      |     J19      |     J20      |
          |---------------+--------------+--------------+--------------|
          |     25MHz     |     Open     |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     33MHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     40MHz     |    Closed    |     Open     |     Open     |
          |---------------+--------------+--------------+--------------|
          |    50iMHz     |     Open     |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     50MHz     |     Open     |     Open     |     Open     |
          |---------------+--------------+--------------+--------------|
          |    66iMHz     |    Closed    |     Open     |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CPU TYPE SELECTION                     |
          |------------------------------------------------------------|
          |       Type       |        J11         |        J12         |
          |------------------+--------------------+--------------------|
          |     80486SX      | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |     80486DX      | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |     80486DX2     | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          +------------------------------------------------------------+