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.