FREE COMPUTER TECHNOLOGY, INC.

80486VESA (03-0027X-01)

Device Type         Mainboard
Processor           80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed     20/25/33/40/50(internal)/50/66(internal) MHz
Chip Set            SIS
Max. Onboard DRAM   32MB
SRAM Cache          64/128/256KB
BIOS                AMI
Dimensions          254mm x 218mm
I/O Options         32-bit VESA local bus slot (2)
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            JP1      Turbo LED                  JP16

  Power saving feature        JP2      Speaker                    JP17

  Power saving feature       JP11      Power LED & keylock        JP18

  Reset switch               JP14      32-bit VESA card            S1

  Turbo switch               JP15      32-bit VESA card            S2

              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

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

      16MB        (4) 4M x 9         None

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

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

  CPU SPEED CONFIGURATION

  Speed   JP6            JP7           JP8

  20MHz   Open           Closed        Closed

  25MHz   Closed         Open          Closed

  33MHz   Closed         Closed        Open

  40MHz   Open           Open          Closed

  50MHz   Open           Closed        Open

                          CPU TYPE CONFIGURATION

     CPU Type           JP9         JP10          JP22           JP23

  80486SX/DX PQFP    1 & 2, 3 &     1 & 2        Closed          Open
                         4

    80486SX PGA        2 & 3        Open          Open          Closed

  80486DX/DX2 PGA    1 & 2, 3 &     1 & 2         Open          Closed
                         4

  80487SX/SX2 PGA    1 & 2, 3 &     2 & 3         Open          Closed
                         4

  (2)80486DX2 PGA    1 & 2, 3 &     1 & 2         Open          Closed
                         4

  (2)80487SX PGA     1 & 2, 3 &     2 & 3         Open          Closed
                         4

  Note:Pins designated should be in the closed position.

  WAIT STATE SELECTION

  Setting     JP19

  0           Open

  1           Closed

  VL-BUS SPEED SELECTION

   Setting        JP20

  <= 33MHz        Open

   >33 MHz       Closed

  CACHE SIZE

  Size             Bank 0          Bank 1          TAG

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

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

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

                        CACHE JUMPER

       Size                 JP12                JP13

       64KB                 Open                Open

       128KB               Closed               1 & 2

       256KB               Closed               2 & 3

  Note: Pins designated should be in the closed position.