
FREE COMPUTER TECHNOLOGY, INC.

CACHE 486 ISA FULL SIZE

Processor         80486SX/80487SX/80486DX
Processor Speed   20/25/33/50MHz
Chip Set          OPTI
Max. Onboard DRAM 64MB
Cache             64/128/256/512KB
BIOS              AMI
Dimensions        355mm x 304mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J2       Turbo LED                 JP10

  Power LED & keylock         J21       Reset switch               SW1

  Speaker                     J22       Turbo switch               SW2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                JP1             Open

      Monitor type select monochrome           JP1            Closed

     Power good signal detect from           JP400          pins 1 & 2
      power supply                                            closed

      Power good signal detect from           JP400          pins 2 & 3
      board                                                   closed

                            DRAM CONFIGURATION

   Size         Bank 0         Bank 1          Bank 2          Bank 3

    1MB      (4) 256K x 9       NONE            NONE            NONE

    2MB      (4) 256K x 9    (4) 256K x 9       NONE            NONE

    4MB       (4) 1M x 9        NONE            NONE            NONE

    5MB      (4) 256K x 9    (4) 1M x 9         NONE            NONE

    6MB      (4) 256K x 9    (4) 256K x 9    (4) 1M x 9         NONE

    8MB       (4) 1M x 9     (4) 1M x 9         NONE            NONE

    9MB      (4) 256K x 9    (4) 1M x 9      (4) 1M x 9         NONE

   10MB      (4) 256K x 9    (4) 256K x 9    (4) 1M x 9      (4) 1M x 9

   12MB       (4) 1M x 9     (4) 1M x 9      (4) 1M x 9         NONE

   13MB      (4) 256K x 9    (4) 1M x 9      (4) 1M x 9      (4) 1M x 9

   16MB       (4) 4M x 9        NONE            NONE            NONE

   20MB       (4) 1M x 9     (4) 4M x 9         NONE            NONE

   24MB       (4) 1M x 9     (4) 1M x 9      (4) 4M x 9         NONE

   28MB       (4) 1M x 9     (4) 1M x 9      (4) 1M x 9      (4) 4M x 9

   32MB       (4) 4M x 9     (4) 4M x 9         NONE            NONE

   36MB       (4) 1M x 9     (4) 4M x 9      (4) 4M x 9         NONE

   40MB       (4) 1M x 9     (4) 1M x 9      (4) 4M x 9      (4) 4M x 9

   48MB       (4) 4M x 9     (4) 4M x 9      (4) 4M x 9         NONE

   52MB       (4) 1M x 9     (4) 4M x 9      (4) 4M x 9      (4) 4M x 9

   64MB       (4) 4M x 9     (4) 4M x 9      (4) 4M x 9      (4) 4M x 9

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

     128KB       (8) 8K x 8     (8) 8K x 8    (1) 8K x 8

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

     512KB      (8) 32K x 8    (8) 32K x 8    (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

   Size         JP4         JP5          JP6         JP8          JP9

   64KB        Open         Open        Open        Open       pins 2 & 3
                                                                closed

   128KB       Open         Open       Closed      Closed      pins 2 & 3
                                                                closed

   256KB       Open        Closed      Closed      Closed      pins 2 & 3
                                                                closed

   512KB      Closed       Closed      Closed      Closed      pins 1 & 2
                                                                closed

                          CPU TYPE CONFIGURATION

       Type              JP100             JP101              JP102

      80486SX          pins 2 & 3           Open              Open
                         closed

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

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

