FREE COMPUTER TECHNOLOGY, INC.

80486VESA

Processor        80486SX/80487SX/80486SX2/80486DX

                 ODP486/80486DX2/Pentium Overdrive
Processor Speed  20/25/33/40/50(internal)/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 (3)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose               Location

  External battery            JP1       Reset switch            JP17

  Peripheral power save    JP2 & JP3    Turbo LED               JP18

  Speaker                    JP15       Turbo switch            JP19

  Power LED & keylock        JP16       32-bit VESA Local   SL1, SL2,SL3
                                        bus slots

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

  »   CMOS normal operation                  JP21           pins 2 & 3
                                                              closed

      CMOS memory clear                      JP21           pins 1 & 2
                                                              closed

              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

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

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

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

                  CACHE JUMPER CONFIGURATION

        Size                 JP11                 JP12

        64KB                 Open                 Open

        128KB          pins 1 & 2 closed         Closed

        256KB          pins 2 & 3 closed         Closed

                          CPU TYPE CONFIGURATION

         CPU Type                    JP7                     JP8

          80486SX             pins 2 & 3 closed             Open

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

         80486SX2             pins 1 & 2, 3 & 4       pins 2 & 3 closed
                                   closed

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

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

     ODP486 (168-pin)         pins 1 & 2, 3 & 4       pins 1 & 2 closed
                                   closed

     ODP486 (169-pin)         pins 1 & 2, 3 & 4       pins 2 & 3 closed
                                   closed

     Pentium Overdrive        pins 1 & 2, 3 & 4       pins 2 & 3 closed
                                   closed

              CPU CLOCK CONFIGURATION

  CPU Clock      JP4          JP5          JP6

    20MHz       Closed       Closed       Open

    25MHz       Closed        Open       Closed

    33MHz        Open        Closed      Closed

    40MHz       Closed        Open        Open

    50MHz        Open        Closed       Open

              VESA WAIT STATE/BUS SPEED CONFIGURATION

    CPU speed      Wait states          JP13            JP14

    <= 33MHz      0 wait states         Open            Open

     > 33MHz       1 wait state        Closed          Closed

                       MISCELLANEOUS TECHNICAL NOTE

  Note: JP2 & JP3 are used for an optional peripheral card timed power
  shut-down that is set up in CMOS.