FREE COMPUTER TECHNOLOGY, INC.

80486VESA (03-0030X-02)

Device Type             Mainboard
Processor               80486SX/80486SX2/80487SX/ODP486/80486DX/80486DX2/

                        80486DX3/P24T
Processor Speed         20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set                SIS 461
Video Chip Set          None
Maximum Onboard Memory  32MB
Maximum Video Memory    1MB
Cache                   64/128/256KB
BIOS                    Unidentified
Dimensions              254mm x 218mm
I/O Options             32-bit VESA local bus slots (3)
NPU Options             None


                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            JP1       Reset switch              JP17

  Power saving                JP2       Turbo LED                 JP18

  Power saving                JP3       Turbo switch              JP19

  Speaker                    JP15       32-bit VESA local      SL1 – SL3
                                        bus slots

  Power LED & keylock        JP16

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   Factory configured - do not          JP21          Unidentified
      alter

              SIMM 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

      5MB         (4) 1M x 9     (4) 256K x 9

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

      16MB        (4) 4M x 9         None

      17MB        (4) 4M x 9     (4) 256K x 9

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

      20MB        (4) 4M x 9      (4) 1M 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) 16K/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 SPEED SELECTION

  Speed      JP4        JP5       JP6

  20MHz     Closed    Closed     Open

  25MHz     Closed     Open     Closed

  33MHz      Open     Closed    Closed

  40MHz     Closed     Open      Open

  50iMHz    Closed     Open     Closed

  50MHz      Open     Closed     Open

  66iMHz     Open     Closed    Closed

                            CPU TYPE SELECTION

          Type                     JP7                      JP8

         80486SX            Pins 2 & 3 closed               Open

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

         80487SX             Pins 1 & 2, 3 & 4       Pins 2 & 3 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

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

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

        80486DX3             Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

          P24T               Pins 1 & 2, 3 & 4       Pins 2 & 3 closed
                                  closed

  VL BUS WAIT STATE SELECTION

    Setting           JP13

       0              Open

       1             Closed

  VL BUS SPEED SELECTION

    Speed         JP14

  <= 33MHz        Open

   >33 MHz       Closed