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

[Image]

                                CONNECTIONS

  Purpose                  Location   Purpose                    Location

  VGA port                   CN1      IDE interface                CN6

  Parallel port              CN2      Floppy drive interface       CN7

  Serial port                CN3      Front panel connector        CN8

  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 36       None

     16MB       (1) 1M x 36   (1) 1M x 36    (1) 1M x 36    (1) 1M x 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 36       None

     32MB       (1) 4M x 36   (1) 4M x 36        None          None

     40MB       (1) 1M x 36   (1) 1M x 36    (1) 4M x 36    (1) 4M x 36

     48MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36       None

     64MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36    (1) 4M x 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