
EPSON, INC.

ACTION DESK 4000+

Processor          80486SX/80486DX/80486DX2/P24T
Processor Speed    25/33/50(internal)/50/66(internal)MHz
Chip Set           Unidentified
Video Chip Set     Cirrus Logic
Maximum Onboard    64MB
Memory
Maximum Video      2MB
Memory
Cache              64/128/256KB
BIOS               Phoenix
Dimensions         254mm x 218mm
I/O Options        Floppy drive interface, IDE interface, game interface,
                   riser slot
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                    Location   Purpose                  Location

  Floppy drive interface       CN1      Turbo switch               J22

  Game interface               CN2      Riser slot                 SL1

  IDE interface                CN7

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured  do not           CN8          Unidentified
      alter

     Parallel port LPT select LPT1         J5         Pins 1 & 2 closed

      Parallel port LPT select LPT2         J5         Pins 2 & 3 closed

     Serial port 1 COM select COM1         J6         Pins 1 & 2 closed

      Serial port 1 COM select COM3         J6         Pins 2 & 3 closed

     Serial port 2 COM select COM2         J7         Pins 1 & 2 closed

      Serial port 2 COM select COM4         J7         Pins 2 & 3 closed

     Floppy drive interface enabled        J8         Pins 1 & 2 closed

      Floppy drive interface                J8         Pins 2 & 3 closed
      disabled

     VGA IRQ9 disabled                     J14              Open

      VGA IRQ9 enabled                      J14             Closed

     Fast speed enabled                    J22              Open

      8 Mhz enabled                         J22             Closed

     Battery type select internal          J34        Pins 2 & 3 closed

      CMOS memory clear                     J34        Pins 3 & 4 closed

     IDE interface enabled                 J35        Pins 1 & 2 closed

      IDE interface disabled                J35        Pins 2 & 3 closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (1) 256K x 36         None

       2MB        (1) 256K x 36    (1) 256K x 36

       4MB         (1) 1M x 36          None

       5MB         (1) 1M x 36     (1) 256K x 36

       6MB         (1) 1M x 36     (1) 512K x 36

       8MB         (1) 1M x 36      (1) 1M x 36

       8MB         (1) 2M x 36          None

       9MB         (1) 2M x 36     (1) 256K x 36

      10MB         (1) 2M x 36     (1) 512K x 36

      12MB         (1) 1M x 36      (1) 2M x 36

      16MB         (1) 2M x 36      (1) 2M x 36

      16MB         (1) 4M x 36          None

      17MB         (1) 4M x 36     (1) 256K x 36

      18MB         (1) 4M x 36     (1) 512K x 36

      20MB         (1) 4M x 36      (1) 1M x 36

      24MB         (1) 4M x 36      (1) 2M x 36

      32MB         (1) 4M x 36      (1) 4M x 36

      32MB         (1) 8M x 36          None

      33MB         (1) 8M x 36     (1) 256K x 36

      34MB         (1) 8M x 36     (1) 512K x 36

         DRAM CONFIGURATION (CONT)

     Size          Bank 0        Bank 1

     36MB        (1) 8M x 36   (1) 1M x 36

     40MB        (1) 8M x 36   (1) 2M x 36

     48MB        (1) 8M x 36   (1) 4M x 36

     64MB        (1) 8M x 36   (1) 8M x 36

  Note: Board also accepts x 32 SIMMs.

                        CACHE CONFIGURATION

      Size            Bank 0           Bank 1             TAG

      64KB          (4) 8K x 8       (4) 8K x 8      Unidentified

      128KB         (4) 32K x 8         None         Unidentified

      256KB         (4) 32K x 8      (4) 32K x 8     Unidentified

  Note: The location of banks 0 & 1 and the TAG are unidentified.

                        CACHE JUMPER CONFIGURATION

    Size           J25            J26            J27             J28

    64KB        Pins 1 & 2     Pins 1 & 2        Open         Pins 2 & 3
                 closed          closed                        closed

    128KB       Pins 2 & 3     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

                  VIDEO MEMORY CONFIGURATION

        Size                Bank 0               Bank 1

         1MB                 1MB                  None

         2MB                 1MB             (2) 256K x 16

  Note: Bank 0 is factory installed and is not configurable.

           CPU SPEED SELECTION

        Speed                J16

        25MHz         Pins 5 & 6 closed

        33MHz         Pins 1 & 2 closed

       50iMHz         Pins 5 & 6 closed

        50MHz         Pins 3 & 4 closed

       66iMHz         Pins 1 & 2 closed

                            CPU TYPE SELECTION

          Type                     J17                      J19

         80486SX            Pins 2 & 3 closed               Open

         80486DX             Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

        80486DX2             Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

          P24T               Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

     ON BOARD VIDEO SELECTION

  Setting       J36        J37

  Enabled     Closed      Closed

  Disabled     Open        Open

