EFA CORPORATION

486FLE2

Processor        80486SX/ODP486SX/80486DX/80487SX/ODP486DX/80486DX2
Processor Speed  16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set         SIS
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  Power LED & keylock         JP4       Turbo switch              JP9

  Speaker                     JP7       Turbo LED                 JP22

  Reset switch                JP8       32-bit VESA Local       S1 & S2
                                        bus slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

      Monitor type select color               JP1             Closed

      Monitor type select monochrome          JP1              Open

  »   Factory configured - do not             JP5           pins 1 & 2
      alter                                                   closed

  »   Factory configured - do not             JP6           pins 1 & 2
      alter                                                   closed

  »   Factory configured - do not             JP21            Closed
      alter

  Note:The exact locations of JP1 & JP21 are unknown.

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

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

      2MB         (4) 512K x 9       NONE

      4MB         (4) 1M x 9         NONE

      4MB         (4) 512K x 9   (4) 512K x 9

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

      8MB         (4) 2M x 9         NONE

      16MB        (4) 4M x 9         NONE

      16MB        (4) 2M x 9      (4) 2M x 9

      18MB        (4) 512K x 9    (4) 4M x 9

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

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

                        CACHE JUMPER CONFIGURATION

  Size       JP11      JP12       JP13       JP14       JP15       JP16

  64KB     pins 2 &   pins 1 &   pins 1 &  pins 1 &   pins 1 &   pins 1 &
              3          2          2         2          2          2

  128KB    pins 1 &   pins 2 &   pins 1 &  pins 2 &   pins 1 &   pins 2 &
              2          3          2         3          2          3

  256KB    pins 4 &   pins 2 &   pins 2 &  pins 2 &   pins 2 &   pins 2 &
              5          3          3         3          3          3

  Note:Pins designated should be in the closed position.

                         CACHE CONFIGURATION

       Size             Bank 0            Bank 1            TAG

       64KB           (4) 8K x 8        (4) 8K x 8       (1) 8K x 4

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

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

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

                  CPU SPEED CONFIGURATION

    Speed      SW2/switch 1   SW2/switch 2    SW2/switch 3

    16MHz          On             Off              On

    20MHz          Off            Off              On

    25MHz          On              On             Off

    33MHz          Off             On             Off

   50i MHz         On              On             Off

    50MHz          Off            Off             Off

   66i MHz         Off             On             Off

                          CPU TYPE CONFIGURATION

   Type       JP3     JP24    JP25   SW3/1   SW3/2   SW3/3   SW3/4   SW3/5

  80486SX     N/A     N/A     N/A     Off     Off    Off      On     Off

  80486SX    Open     Open     1 &    N/A     N/A    N/A     N/A     N/A
  (PQFP)                       2

  ODP486SX    N/A     N/A     N/A     On      Off     On     Off      On

  80486DX     N/A     N/A     N/A     On      On     Off     Off      On

  80486DX    Closed  Closed   N/A     N/A     N/A    N/A     N/A     N/A
  (PQFP)

  ODP486DX    N/A     N/A     N/A     On      Off     On     Off      On

  80486DX2    N/A     N/A     N/A     On      On     Off     Off      On

  Note:Pins designated should be in the closed position.