
VISION TECHNOLOGIES

VAES3486

Processor      80386DX/CX486DLC/CX486S/CX487S/80486SX(PQFP)/

               80486SX/80486DX/80486DX2/Pentium Overdrive
Processor      16/20/25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set       OPTI
Max. Onboard   64MB
DRAM
Cache          64/128/256KB
BIOS           AMI
Dimensions     330mm x 218mm
I/O Options    32-bit VESA local bus slots (2), floppy drive interface, IDE
               interface, green PC connector, parallel port, serial ports
               (2)
NPU Options    CX387

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                   Location

  Serial port 1             CN1       Power supply/sleep          JP2
                                      mode

  Serial port 2             CN2       Speaker                     JP28

  Floppy drive              CN3       Green PC connector          JP30
  interface

  IDE interface             CN4       Turbo switch                JP33

  Parallel port             CN5       Turbo LED                   JP38

  External battery          J10       Reset switch                 S1

  IDE interface LED         J17       32-bit VESA local bus    SL1 & SL2
                                      slots

  Power LED & keylock       J22

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not              J9              N/A
      alter

     Pentium Overdrive enabled               JP1              Open

      Pentium Overdrive disabled              JP1             Closed

     VESA supports bus mastering             JP4             Closed

      VESA does not support bus               JP4              Open
      mastering

     On board PS/2 style mouse               JP14            Closed
      enabled

      On board PS/2 style mouse               JP14             Open
      disabled

     Power down mode enabled                 JP15          pins 2 & 3
                                                              closed

      Power down mode disabled                JP15          pins 1 & 2
                                                              closed

     Keyboard password clear                 JP16            Closed

      Keyboard password enabled               JP16             Open

     NPU disabled                            JP24          pins 1 & 2
                                                              closed

      NPU enabled                             JP24          pins 2 & 3
                                                              closed

     CMOS memory normal operation            JP29          pins 2 & 3
                                                              closed

      CMOS memory clear                       JP29          pins 1 & 2
                                                              closed

     Green PC power down mode enabled        JP30             Open

      Green PC power down mode                JP30            Closed
      disabled

     Turbo disabled                          JP33            Closed

      Turbo enabled                           JP33             Open

     VESA card type select standard          JP34          pins 2 & 3
      VESA VGA                                                closed

      VESA card type select Tekram            JP34          pins 1 & 2
      VESA/Cache IDE                                          closed

  Note: The location of JP16 is unidentified.

                    DRAM CONFIGURATION

        Size              Bank 0              Bank 1

        1MB            (1) 256K x 36           NONE

        2MB            (1) 256K x 36       (1) 256K x 36

        4MB                (1) 1M x 36         NONE

        16MB            (1) 4M x 36            NONE

        32MB            (1) 8M x 36            NONE

        64MB           (1) 16M x 36            NONE

           DRAM JUMPER CONFIGURATION

          Type                   JP42

    Only Bank 0 used       pins 1 & 2 closed

  Bank 0 & Bank 1 used     pins 2 & 3 closed

                    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           JP3           JP18           JP19           JP20

     64KB        pins 2 & 3      Closed         Closed        pins 2 & 3
                  closed                                       closed

    128KB        pins 1 & 2       Open          Closed        pins 1 & 2
                  closed                                       closed

    256KB        pins 2 & 3      Closed         Closed        pins 2 & 3
                  closed                                       closed

                                  CPU TYPE CONFIGURATION

       Type          JP17  JP21    JP23    JP25    JP26    JP27     JP31     JP32     JP36

   80386DX(PGA)      Open   2 &    Open     1 &    Open    Open     Closed   Open     Open
                            3               2

     CX486DLC        Open   2 &    Open     1 &    Open    Open     Closed   Open     Open
                            3               2

   80386DX(PQFP)     Open   2 &    Open     1 &    Open    Open     Open     Open     Open
                            3               2

      CX486S         1 &    2 &   Closed    2 &    Open    Open     Closed   Closed   1 &
                      2     3               3                                          2

      Cx487S         1 &    2 &   Closed    2 &   Closed   Open     Closed   Closed   1 &
                      2     3               3                                          2

   80486SX(PQFP)     2 &    2 &    Open     1 &    Open    Open     Open     Open     Open
                      3     3               2

   80486SX(PGA)      1 &    2 &    Open     1 &    Open    Open     Closed   Closed   2 &
                      2     3               2                                          3

      80486DX        1 &    2 &    Open     1 &    Open    Open     Closed   Closed   1 &
                      2     3               2                                          2

  80486DX-50(only)   1 &    2 &    Open     2 &    Open    Open     Closed   Closed   1 &
                      2     3               3                                          2

     80486DX2        1 &    2 &    Open     1 &    Open    Open     Closed   Closed   1 &
                      2     3               2                                          2

     P24T (WB)       1 &    1 &   Closed    2 &    Open    Open     Closed   Closed   1 &
                      2     2               3                                          2

     P24T (WT)       1 &    1 &   Closed    2 &    Open    Closed   Closed   Closed   1 &
                      2     2               3                                          2

  Note: Pins designated should be in the closed position (The location of JP25 and JP26 is
  unidentified).

                          CPU TYPE CONFIGURATION

        Type                JP5              JP22              JP35

   80386/CX486DLC          Open           pins 2 & 3         pins 1 & 2
                                            closed            closed

  80486/P24T/CX486S       Closed          pins 1 & 2         pins 2 & 3
                                            closed            closed

         CPU SPEED CONFIGURATION

  Speed      JP39      JP40      JP41

  16MHz      Open     Closed     Open

  20MHz      Open     Closed    Closed

  25MHz     Closed     Open      Open

  33MHz     Closed     Open     Closed

  40MHz     Closed    Closed     Open

  50iMHz    Closed     Open      Open

  50MHz     Closed    Closed    Closed

  66iMHz    Closed     Open     Closed

                         DMA CHANNEL INTERRUPT CONFIGURATION

  DRQ    DACK    JP6      JP7      JP8      JP9     JP10     JP11     JP12     JP13

  DRQ3   DACK3  Closed    Open     Open     Open    Closed   Open     Open     Open

  DRQ5   DACK5   Open    Closed    Open     Open    Open     Closed   Open     Open

  DRQ6   DACK6   Open     Open    Closed    Open    Open     Open     Closed   Open

  DRQ7   DACK7   Open     Open     Open    Closed   Open     Open     Open     Closed

  VESA WAIT STATE CONFIGURATION

   Wait states         JP37

  0 wait states        Open

  1 wait state        Closed

