
UNIDENTIFIED

486V.VII.3

Processor  CX486S/80486SX/80486SX2/CX486DX/ODP486/80486DX/CX486DX2/ 80486DX2/
           80486DX4/Pentium Overdrive
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Unidentified
Max.       64MB
Onboard
DRAM
Cache      128/256/512KB
BIOS       Award
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  External battery           J1       Speaker                      J6

  Turbo switch               J2       Green PC connector           J7

  Turbo LED                  J3       Green PC connector          JP2

  Reset switch               J4       Green PC connector          JP3

  Power LED & keylock        J5       32-bit VESA local bus    SL1 - SL3
                                      slots

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     CMOS memory normal operation            JP4              Open

      CMOS memory clear                       JP4             Closed

                            DRAM CONFIGURATION

     Size         Bank 0          Bank 1         Bank 2         Bank 3

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

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

     2MB           NONE         (1) 512K x        NONE           NONE
                                    36

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

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

     6MB         (1) 256K x     (1) 256K x     (1) 1M x 36       NONE
                    36              36

     6MB           NONE         (1) 512K x     (1) 1M x 36       NONE
                                    36

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

     8MB           NONE        (1) 2M x 36        NONE           NONE

     10MB        (1) 256K x     (1) 256K x     (1) 1M x 36   (1) 1M x 36
                    36              36

     10MB        (1) 256K x     (1) 256K x        NONE       (1) 2M x 36
                    36              36

     10MB          NONE         (1) 512K x     (1) 1M x 36   (1) 1M x 36
                                    36

     10MB          NONE         (1) 512K x        NONE       (1) 2M x 36
                                    36

     12MB       (1) 1M x 36    (1) 1M x 36     (1) 1M x 36       NONE

     12MB          NONE        (1) 2M x 36     (1) 1M x 36       NONE

     16MB       (1) 1M x 36    (1) 1M x 36     (1) 1M x 36   (1) 1M x 36

     16MB       (1) 1M x 36    (1) 1M x 36        NONE       (1) 2M x 36

     16MB          NONE        (1) 2M x 36        NONE       (1) 2M x 36

     16MB          NONE        (1) 2M x 36     (1) 1M x 36   (1) 1M x 36

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

     17MB        (1) 256K x    (1) 4M x 36        NONE           NONE
                    36

     18MB        (1) 256K x     (1) 256K x     (1) 4M x 36       NONE
                    36              36

     18MB          NONE         (1) 512K x     (1) 4M x 36       NONE
                                    36

     20MB       (1) 1M x 36    (1) 4M x 36        NONE           NONE

     24MB       (1) 1M x 36    (1) 1M x 36     (1) 4M x 36       NONE

     24MB          NONE        (1) 2M x 36     (1) 4M x 36       NONE

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

     32MB          NONE        (1) 8M x 36        NONE           NONE

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

     40MB       (1) 1M x 36    (1) 1M x 36     (1) 4M x 36   (1) 4M x 36

     40MB       (1) 1M x 36    (1) 1M x 36        NONE       (1) 8M x 36

     40MB          NONE        (1) 2M x 36     (1) 4M x 36   (1) 4M x 36

     40MB          NONE        (1) 2M x 36        NONE       (1) 8M x 36

     48MB       (1) 4M x 36    (1) 4M x 36     (1) 4M x 36       NONE

     64MB       (1) 4M x 36    (1) 4M x 36     (1) 4M x 36   (1) 4M x 36

     64MB       (1) 4M x 36    (1) 4M x 36        NONE       (1) 8M x 36

     64MB          NONE        (1) 8M x 36        NONE       (1) 8M x 36

                            CACHE CONFIGURATION

       Size              Bank 0            Bank 1              TAG

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

       256KB           (4) 32K x 8       (4) 32K x 8      (1) 16K or (1)
                                                             32K x 8

       256KB           (4) 64K x 8          NONE          (1) 16K or (1)
                                                             32K x 8

       512KB           (4) 64K x 8       (4) 64K x 8       (1) 32K x 8

       512KB          (4) 128K x 8          NONE           (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

          Size                    JP12                      JP21

         128KB              pins 1 & 2 closed               Open

         256KB              pins 2 & 3 closed               Open

         256KB              pins 1 & 2, 3 & 4               Open
                                 closed

         512KB              pins 2 & 3, 4 & 5              Closed
                                 closed

         512KB              pins 1 & 2, 3 & 4              Closed
                                 closed

                          CPU TYPE CONFIGURATION

            Type                      JP6                    JP7

           CX486S                 1 & 2, 3 & 4       2 & 3, 4 & 5, 7 & 8,
                                                            9 & 10

           80486SX                2 & 3, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

          80486SX2                2 & 3, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

           CX486DX                1 & 2, 3 & 4       2 & 3, 4 & 5, 7 & 8,
                                                            9 & 10

           ODP486                 2 & 3, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

           80486DX                2 & 3, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

          CX486DX2                1 & 2, 3 & 4       2 & 3, 4 & 5, 7 & 8,
                                                            9 & 10

          80486DX2                2 & 3, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

        80486DX4 (2x)             2 & 3, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

       80486DX4 (2.5x)            2 & 3, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

        80486DX4 (3x)             2 & 3, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

      Pentium Overdrive           1 & 2, 4 & 5       1 & 2, 3 & 4, 6 & 7,
                                                            8 & 9

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

         Type                JP11             JP14              JP15

        CX486S               Open         2 & 3, 5 & 6         3 & 4

        80486SX              Open        2 & 3, 4 & 5, 6       3 & 4
                                              & 7

       80486SX2              Open        2 & 3, 4 & 5, 6       3 & 4
                                              & 7

        CX486DX              Open         1 & 2, 5 & 6         3 & 4

        ODP486               Open        1 & 2, 3 & 4, 6       3 & 4
                                           & 7, 8 & 9

        80486DX              Open        1 & 2, 3 & 4, 6       3 & 4
                                           & 7, 8 & 9

       CX486DX2              Open         1 & 2, 5 & 6      1 & 2, 3 & 4

       80486DX2              Open        1 & 2, 3 & 4, 6       3 & 4
                                           & 7, 8 & 9

     80486DX4 (2x)          2 & 3        1 & 2, 3 & 4, 6       3 & 4
                                           & 7, 8 & 9

    80486DX4 (2.5x)         1 & 2        1 & 2, 3 & 4, 6       3 & 4
                                           & 7, 8 & 9

     80486DX4 (3x)           Open        1 & 2, 3 & 4, 6       3 & 4
                                           & 7, 8 & 9

   Pentium Overdrive         Open        1 & 2, 4 & 5, 6       4 & 5
                                              & 7

  Note: Pins designated should be in the closed position.

          CPU SPEED CONFIGURATION

   Speed      JP17       JP19      JP20

   25MHz     Closed      Open     Closed

   33MHz     Closed     Closed     Open

   40MHz      Open       Open     Closed

  50iMHz     Closed      Open     Closed

   50MHz      Open      Closed     Open

  66iMHz     Closed     Closed     Open

  75iMHz     Closed      Open     Closed

  100iMHz    Closed     Closed     Open

  BUS SPEED CONFIGURATION

  CPU speed        JP24

   <= 33MHz        Open

   > 33MHz        Closed

