
ORCHID TECHNOLOGY

SUPERBOARD 486(DX2)

Processor              80486SX/80486DX/ODP486SX/80486DX2
Processor Speed        20/25/40/50(internal)/66(internal)MHz
Chip Set               OPTI
Max. Onboard DRAM      32MB
Cache                  64/256KB
BIOS                   AMI
Dimensions             330mm x 218mm
I/O Options            32-bit proprietary video card slot
NPU Options            4167

[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                   Location

  External battery         J10       32-bit proprietary           S1
                                     video card

  Power LED &              J23       Reset switch                 SW1
  keylock

  Speaker                  J24       Turbo switch                 SW2

  Turbo LED               JP12

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                JP1             Open

      Monitor type select monochrome           JP1            Closed

     CMOS memory normal operation             JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP2           pins 1 & 2
                                                              closed

     Factory configured - do not alter        JPX              N/A

     Factory configured - do not alter        JPY              N/A

     Factory configured - do not alter       JP13              N/A

              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

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

      16MB        (4) 4M x 9         NONE

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

                    CACHE CONFIGURATION

     Size          Bank 0       TAG (U34)      TAG (U33)

     64KB        (8) 8K x 8     (1) 8K x 8    (1) 64K x 1

     256KB      (8) 32K x 8    (1) 32K x 8    (1) 64K x 1

           CACHE JUMPER CONFIGURATION

   Size      JP8       JP9      JP10      JP11

   64KB     Open      Open      Open      Open

  256KB    Closed    Closed     Open     Closed

                          CPU TYPE CONFIGURATION

     Type           OSC         JP4        JP5        JP6         JP7

  80486SX-20       20MHz       1 & 2       Open      2 & 3        Open

  80486SX-20       40MHz       2 & 3       Open      2 & 3        Open

  ODP486SX-50      25MHz       1 & 2       Open      2 & 3        Open

  ODP486SX-50      50MHz       2 & 3       Open      2 & 3        Open

  80486DX-25       25MHz       1 & 2      2 & 3      1 & 2       Closed

  80486DX2-50     50iMHz       2 & 3      2 & 3      1 & 2       Closed

  80486DX-33       66MHz       2 & 3      2 & 3      1 & 2       Closed

  80486DX2-50     50iMHz       2 & 3      2 & 3      1 & 2       Closed

  80486DX2-66      66MHz       2 & 3      2 & 3      1 & 2       Closed

  Note: Pins designated should be in the closed position.

