FREE COMPUTER TECHNOLOGY, INC.

80486EISA (Ver. 2.0)

Processor              80486SX/80487SX/80486DX/80486DX2
Processor Speed        20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set               OPTI
Max. Onboard DRAM      128MB
Cache                  64/128/256/512KB
BIOS                   AMI
Dimensions             330mm x 365mm
I/O Options            None
NPU Options            4167

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo LED                   H1       Speaker                     H4

  Reset switch                H2       Power LED & keylock         H5

  Turbo switch                H3

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not alter        JP1             Open

  »   Factory configured - do not alter        JP2           pins 2 & 3
                                                              closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      4MB        (4) 1M x 9       NONE

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

     16MB        (4) 4M x 9       NONE

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

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

     64MB        (4) 16M x 9      NONE

     128MB       (4) 16M x 9   (4) 16M x 9

                            CACHE CONFIGURATION

     Size          Bank 0        Bank 1       TAG (U26)       TAG (U31)

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8     (1) 16K x 1

     128KB       (4) 32K x 8      NONE        (1) 8K x 8     (1) 16K x 1

     256KB       (4) 32K x 8    (4) 32K x    (1) 32K x 8     (1) 16K x 1
                                    8

     512KB       (4) 128K x       NONE       (1) 32K x 8     (1) 64K x 1
                     8

                        CACHE JUMPER CONFIGURATION

   Size          J4           J5          J6           J7          J8

   64KB      pins 2 & 3      Open        Open         Open        Open
               closed

   128KB     pins 1 & 2     Closed       Open         Open       Closed
               closed

   256KB     pins 2 & 3     Closed      Closed        Open       Closed
               closed

   512KB     pins 1 & 2     Closed      Closed       Closed      Closed
               closed

   CPU SPEED CONFIGURATION

  Speed       J9       J10

  20MHz      Open      Open

  25MHz      Open      Open

  33MHz      Open     Closed

  40MHz     Closed     Open

  50iMHz     Open      Open

  50MHz     Closed    Closed

  66iMHz     Open     Closed

                          CPU TYPE CONFIGURATION

          Type                     J11                      J12

         80486SX            pins 2 & 3 closed               open

         80487SX           pins 1 & 2 and 3 & 4      pins 1 & 2 closed
                                  closed

         80486DX           pins 1 & 2 and 3 & 4      pins 2 & 3 closed
                                  closed

        80486DX2           pins 1 & 2 and 3 & 4      pins 2 & 3 closed
                                  closed