
UNIDENTIFIED

3VLG-A486

Processor   CX486M6/80486SX/SL80486SX/80487SX/CX486M7/AM486DXL/80486DX/
            SL80486DX2/80486DX2/Pentium Overdrive
Processor   25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set    Unidentified
Max.        80MB
Onboard
DRAM
Cache       32/64/128/256KB
BIOS        AMI
Dimensions  254mm x 218mm
I/O Options 32-bit VESA local bus slots (3), green PC connector
NPU Options None

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose               Location

  Modem ring in              JG8        Speaker                 JP17
  signal interface

  Green PC connector         JG9        Turbo switch            JP18

  Green PC connector    JG11 pins 5 &   Turbo LED               JP19
  (monitor)                   6

  Green PC connector    JG11 pins 7 &   Reset switch            JP20
  (fan)                       8

  External battery           JP1        32-bit VESA local     SL1 - SL3
                                        bus slots

  Power LED & keylock       JP16

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CX487S not installed                     J2           pins 2 & 3
                                                              closed

      CX487S installed                         J2           pins 1 & 2
                                                              closed

     Monitor type select monochrome          JP6           pins 1 & 2
                                                              closed

      Monitor type select color               JP6           pins 2 & 3
                                                              closed

     CMOS memory normal operation            JP33             Open

      CMOS memory clear                       JP33            Closed

                        DRAM CONFIGURATION

      Size           Bank 0/1         Bank 0/1         Bank 1

       1MB         (4) 256K x 9         NONE            NONE

       1MB             NONE        (1) 256K x 36        NONE

       2MB         (4) 256K x 9    (1) 256K x 36        NONE

       2MB             NONE        (1) 256K x 36    (1) 256K x 36

       4MB          (4) 1M x 9          NONE            NONE

       4MB             NONE         (1) 1M x 36         NONE

       5MB         (4) 256K x 9         NONE         (1) 1M x 36

       5MB             NONE         (1) 1M x 36     (1) 256K x 36

       8MB          (4) 1M x 9      (1) 1M x 36         NONE

       8MB             NONE         (1) 1M x 36      (1) 1M x 36

      16MB          (4) 4M x 9          NONE            NONE

      16MB             NONE         (1) 4M x 36         NONE

      32MB          (4) 4M x 9      (1) 4M x 36         NONE

      32MB             NONE         (1) 4M x 36      (1) 4M x 36

      64MB         (4) 16M x 9          NONE            NONE

      80MB         (4) 16M x 9      (1) 4M x 36         NONE

                         DRAM JUMPER CONFIGURATION

         Size              JP39        JP40         JP41         JP42

    Bank 0 = 30-pin       2 & 3        2 & 3        1 & 2        1 & 2

    Bank 1 = 72-pin       2 & 3        2 & 3        1 & 2        1 & 2

   Bank 0 = Bank 0/1      1 & 2        1 & 2        2 & 3        2 & 3
        72-pin

   Bank 1 = 30-pin or     1 & 2        1 & 2        2 & 3        2 & 3
     Bank 1 72 pin

  Note: Pins designated should be in the closed position.

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

     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

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

                        CACHE JUMPER CONFIGURATION

   Size      JG19       JG20       JP11       JP12     JP13       JP31

   32KB      1 & 2     Closed      Open      2 & 3     2 & 3      Open

   64KB      1 & 2     Closed      Open      1 & 2     1 & 2     Closed

   128KB     1 & 2     Closed     1 & 2, 3   2 & 3     1 & 2     Closed
                                    & 4

   256KB     2 & 3      Open      1 & 2, 3   1 & 2     1 & 2     Closed
                                  & 4, 5 &
                                     6

   256KB     1 & 2     Closed     1 & 2, 3   1 & 2     1 & 2     Closed
                                  & 4, 5 &
                                     6

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

     Type          JG1          JG2         JG3         JG4        JG5

  CX486M6 1x     Closed        Open        1 & 2       2 & 4      2 & 4

  CX486M6 2x     Closed        Open        1 & 2       2 & 4      2 & 4

   80486SX        Open         Open         Open       Open        Open

  SL80486SX       Open        Closed       2 & 3       1 & 2      1 & 2

   80487SX        Open         Open         Open       Open        Open

  CX486M7 1x     Closed        Open        1 & 2       2 & 4      2 & 4

  CX486M7 2x     Closed        Open        1 & 2       2 & 4      2 & 4

   AM486DXL       Open         Open         Open       2 & 3      2 & 3

   80486DX        Open         Open         Open       Open        Open

  SL80486DX       Open        Closed       2 & 3       1 & 2      1 & 2

   80486DX2       Open         Open         Open       Open        Open

  SL80486DX2      Open        Closed       2 & 3       1 & 2      1 & 2

     P24T         Open         Open         Open       2 & 3      2 & 3

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

     Type         JG6          JP8         JP9          JP10       JP21

  CX486M6 1x      Open       Closed        Open        Closed      3 & 4

  CX486M6 2x     Closed      Closed        Open        Closed      3 & 4

   80486SX        Open       Closed       Closed        Open       3 & 4

  SL80486SX       Open       Closed       Closed        Open       3 & 4

   80487SX        Open       Closed       Closed        Open       1 & 2

  CX486M7 1x      Open       Closed        Open         Open       2 & 3

  CX486M7 2x     Closed      Closed        Open         Open       2 & 3

   AM486DXL       Open       Closed       Closed        Open       2 & 3

   80486DX        Open       Closed       Closed        Open       2 & 3

  SL80486DX       Open       Closed       Closed        Open       2 & 3

   80486DX2       Open       Closed       Closed        Open       2 & 3

  SL80486DX2      Open       Closed       Closed        Open       2 & 3

     P24T         Open        Open        Closed        Open       1 & 2

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

     Type         JP22         JP23         JP24       JP26        JP27

  CX486M6 1x      Open         Open        1 & 2       1 & 2      1 & 2

  CX486M6 2x      Open         Open        1 & 2       1 & 2      1 & 2

   80486SX       Closed       Closed       1 & 2       1 & 2      1 & 2

  SL80486SX      Closed       Closed       1 & 2       2 & 3      1 & 2

   80487SX       Closed       Closed       2 & 3       1 & 2      1 & 2

  CX486M7 1x     Closed       Closed       2 & 3       2 & 3      1 & 2

  CX486M7 2x     Closed       Closed       2 & 3       2 & 3      1 & 2

   AM486DXL      Closed       Closed       2 & 3       1 & 2      1 & 2

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

  SL80486DX      Closed       Closed       2 & 3       2 & 3      1 & 2

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

  SL80486DX2     Closed       Closed       2 & 3       2 & 3      1 & 2

     P24T        Closed       Closed       2 & 3       1 & 2      1 & 2

  Note: Pins designated should be in the closed position.

                 CPU SMI CONFIGURATION

            Type                       JG12

           Cyrix                 pins 5 & 6 closed

     Texas Instruments       pins 1 & 2, 5 & 6 closed

            AMD                  pins 3 & 4 closed

       Intel S-series            pins 1 & 2 closed

           Intel                       Open

                          CPU SPEED CONFIGURATION

     Speed           JG13           JP7           JP15           JP32

     25MHz       1 & 2, 5 & 6      1 & 2         2 & 3          2 & 3

     33MHz       1 & 2, 3 & 4      1 & 2         2 & 3          2 & 3

     40MHz       3 & 4, 5 & 6      2 & 3         1 & 2          1 & 2

     50iMHz      1 & 2, 5 & 6      1 & 2         2 & 3          2 & 3

     50MHz       1 & 2, 5 & 6      2 & 3         1 & 2          1 & 2

     66iMHz      1 & 2, 3 & 4      1 & 2         2 & 3          2 & 3

  Note: Pins designated should be in the closed position.

                   BUS SPEED CONFIGURATION

      CPU speed              JP28                 JP29

      <= 33MHz         pins 1 & 2 closed   pins 1 & 2 closed

       > 33MHz         pins 2 & 3 closed   pins 2 & 3 closed

