
ROBOTECH, INC.

386SX/486DX

Processor       80386DX/CX486DLC/80486SX/80487SX/ODP486SX/80486DX/80486DX2
Processor Speed 25/33/40/50(internal)/50/66(internal)MHz
Chip Set        OPTI
Max. Onboard    64MB
DRAM
Cache           64/128/256KB
BIOS            AMI
Dimensions      254mm x 220mm
I/O Options     32-bit VESA local bus slots (2)
NPU Options     80387DX

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Power LED & keylock         J1       Turbo LED                   J5

  Speaker                     J2       External battery            J6

  Turbo switch                J3       32-bit VESA local bus   SL1 & SL2
                                       slots

  Reset switch                J4

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     Turbo switch enabled                      J3             Open

      turbo switch disabled                     J3            Closed

     CMOS memory normal operation              J6           pins 2 & 3
                                                              closed

      CMOS memory clear                         J6           pins 3 & 4
                                                              closed

     Cyrix DLC PQFP CPU disabled              JP4            Closed

      Cyrix DLC PQFP CPU enabled               JP4             Open

     80386DX/80486DX PQFP CPU disabled        JP15           Closed

      80386DX/80486DX PQFP CPU enabled         JP15            Open

     Monitor type select color                JP21           Closed

      Monitor type select monochrome           JP21            Open

     Factory configured - do not alter        JP23            Open

     VESA card select standard card in        JP24          pins 2 & 3
      SL1                                                     closed

      VESA card select WD31 or Tekram          JP24          pins 1 & 2
      IDE card (50MHz only)                                   closed

     Battery type select Lithum               JP26          pins 1 & 2
                                                              closed

      Battery type select NI-CD                JP26          pins 2 & 3
                                                              closed

     80486DX-50 version select old            JP28            Open

      80486DX-50 version select new            JP28           Closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9    (4) 1M x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      17MB        (4) 256K x 9    (4) 4M x 9

      20MB        (4) 1M x 9      (4) 4M x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

                           CACHE CONFIGURATION

     Size          Bank 0         Bank 1       TAG (U18)      TAG (U19)

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8        NONE

     128KB      (4) 32K x 8        NONE       (1) 8K x 8        NONE

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 32K x 8       NONE

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 8K x 8     (1) 8K x 8

                        CACHE JUMPER CONFIGURATION

    Size          JP10            JP11           JP16           JP17

    64KB       pins 2 & 3      pins 2 & 3        Open           Open
                 closed          closed

   128KB       pins 1 & 2      pins 1 & 2       Closed          Open
                 closed          closed

   256KB       pins 2 & 3      pins 2 & 3       Closed         Closed
                 closed          closed

                          CPU TYPE CONFIGURATION

    Type          JP14           JP20            JP25           JP27

    80386         Open         pins 2 & 3     pins 1 & 2      pins 1 & 2
                                closed          closed         closed

    80486        Closed        pins 1 & 2     pins 2 & 3      pins 2 & 3
                                closed          closed         closed

                 CPU TYPE CONFIGURATION (80386DX/CX486DLC)

      Type         JP14        JP15        JP20       JP25        JP27

     80386DX       Open        Open        2 & 3      1 & 2       1 & 2
     (PQFP)

     80386DX       Open       Closed       2 & 3      1 & 2       1 & 2
     (PGA)

    CX486DLC       Open       Closed       2 & 3      1 & 2       1 & 2
     (PGA)

  Note: Pins designated should be in the closed position.

                CPU SPEED CONFIGURATION (80386DX/CX486DLC)

   Speed        JP6         JP7          JP8          JP9          JP22

   33MHz       Closed      Closed       Open       pins 2 & 3      Open
                                                     closed

   40MHz       Closed      Closed      Closed      pins 2 & 3      Open
                                                     closed

                      CPU TYPE CONFIGURATION (80486)

        Type                JP2              JP18              JP19

    80486SX (PGA)           Open             Open            pins 2 & 3
                                                              closed

       80487SX           pins 2 & 3         Closed           pins 1 & 2
                           closed                             closed

      ODP486SX           pins 2 & 3         Closed           pins 1 & 2
                           closed                             closed

     80486DX/DX2         pins 1 & 2         Closed           pins 1 & 2
                           closed                             closed

                      CPU SPEED CONFIGURATION (80486)

    Speed       JP6        JP7         JP8          JP9           JP22

    25MHz      Open        Open        Open      pins 1 & 2      Closed
                                                   closed

    33MHz      Open        Open       Closed     pins 1 & 2       Open
                                                   closed

    40MHz      Open       Closed      Closed     pins 1 & 2       Open
                                                   closed

   50iMHz      Open        Open        Open      pins 1 & 2      Closed
                                                   closed

    50MHz      Open       Closed       Open      pins 1 & 2       Open
                                                   closed

   66iMHz      Open        Open       Closed     pins 1 & 2       Open
                                                   closed

        VESA IDE CONFIGURATION

   IDE       JP1      JP12      JP13

   IDE2     Open      Open     Closed

   IDE3     Open     Closed     Open

   IDE4    Closed     Open      Open

