
UNIDENTIFIED

486-VL BUS ANTI-VIRUS

Processor        80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         OPTi
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       254mm x 218mm
I/O Options      32-Bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            J1        Turbo switch              JP28

  Power LED & keylock         J5        32-bit VESA Local bus      S1
                                        slot

  Speaker                     J6        32-bit VESA Local bus      S2
                                        slot

  Turbo LED                  JP24       Reset switch              SW1

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color               JP1             Closed

      Monitor type select monochrome          JP1              Open

     Factory configured - do not             JP32          pins 2 & 3
      alter                                                   closed

     ADS # signal delay enabled              JP40          pins 2 & 3
                                                              closed

      ADS # signal delay disabled             JP40          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

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

      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) 16K x 8/(1)
                                                            32K x 8

  Note:The exact locations of Bank 0 and Bank 1 are unknown.

                        CACHE JUMPER CONFIGURATION

    Size           JP7            JP9            JP15           JP22

    64KB        pins 2 & 3        Open           Open           Open
                 closed

    128KB       pins 1 & 2       Closed         Closed          Open
                 closed

    256KB       pins 2 & 3       Closed         Closed         Closed
                 closed

  Note:The exact locations of Bank 0 and Bank 1 are unknown.

                          CPU TYPE CONFIGURATION

           Type                     JP11                    JP12

          80486SX                   Open              pins 2 & 3 closed

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

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

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

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

                          CPU SPEED CONFIGURATION

      Speed             JP10               JP16                JP23

      25MHz             Open             pins 2 & 3           Closed
                                          closed

      33MHz            Closed            pins 2 & 3            Open
                                          closed

      40MHz             Open             pins 2 & 3            Open
                                          closed

     50i MHz            Open             pins 2 & 3           Closed
                                          closed

      50MHz             Open             pins 1 & 2           Closed
                                          closed

     66i MHz           Closed            pins 2 & 3            Open
                                          closed

              VESA WAIT STATE/BUS SPEED CONFIGURATION

    CPU speed      Wait states          J20              J21

     < 33MHz      0 wait states        Closed          Closed

     > 33MHz       1 wait state         Open            Open

                     VL-BUS MASTER/SLAVE CONFIGURATION

           Setting                     JP13                   JP18

           Slave mode                Closed                  Open

          Master & slave              Closed                  Open

  Note:For VL-Bus device to support both master and slave mode, an
  additional PAL must be inserted in U43

                      VL-BUS SETUP MODE CONFIGURATION

          Setting                    JP29                    JP39

           Setup 0           pins 1 & 2 closed       pins 1 & 2 closed

            Setup 1           pins 1 & 2 closed       pins 2 & 3 closed

            Setup 2           pins 2 & 3 closed       pins 2 & 3 closed

