
INTEL CORPORATION

486-GL GREEN/VESA

Processor  CX486S/CX486S2/80486SX/80487SX/CX486DX/80486DX/CX486DX2/
           80486DX2/80486DX4/Pentium Overdrive
Processor  20/25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   OPTI
Max.       128MB
Onboard
DRAM
Cache      64/128/256KB
BIOS       AMI
Dimensions 330mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connectors (2)
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  External battery          J1        Green PC connector         JP21
                                      (hardware)

  Power LED & keylock       J2        Green PC connector         JP32
                                      (monitor)

  Turbo switch             JP16       Reset switch                S1

  Turbo LED                JP17       32-bit VESA local bus    SL1 - SL3
                                      slots

  Speaker                  JP18

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CPU type select PGA                     JP1             Closed

      CPU type select PQFP                    JP1              Open

     CMOS memory normal operation            JP26          pins 2 & 3
                                                              closed

      CMOS memory clear                       JP26          pins 1 & 2
                                                              closed

     Monitor type select color               JP30            Closed

      Monitor type select monochrome          JP30             Open

     Intel SMI CPU                           JP45            Closed

      Non Intel SMI CPU                       JP45             Open

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

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

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

     4MB         (1) 256K x     (1) 256K x     (1) 256K x   (1) 256K x 36
                     36            36             36

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

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

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

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

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

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

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

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

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

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

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

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

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

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

     52MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36    (1) 1M x 36

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

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

     64MB       (1) 16M x 36      NONE           NONE           NONE

    128MB       (1) 16M x 36   (1) 16M x 36      NONE           NONE

    128MB           NONE       (1) 32M x 36      NONE           NONE

                    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

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

                        CACHE JUMPER CONFIGURATION

    Size         JP10           JP11            JP13            JP35

    64KB         Open           Open         pins 2 & 3      pins 1 & 2
                                               closed          closed

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

   256KB        Closed         Closed        pins 2 & 3      pins 1 & 2
                                               closed          closed

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

     CPU TYPE CONFIGURATION

   Type       JP6        JP7

  80486SX     Open      Open

  80486DX    Closed    Closed

                    CPU TYPE CONFIGURATION

        Type                 JP27                 JP43

       AMD SMI               Open                 Open

      Intel SL               Open                 Open

    CX486DX (1x)       pins 1 & 2 closed          Open

    CX486DX (2x)       pins 2 & 3 closed          Open

    80486DX4 (2x)            Open          pins 1 & 2 closed

    80486DX4 (3x)            Open                 Open

   Other CPU types           Open                 Open

                          CPU TYPE CONFIGURATION

       Type            JP3           JP5           JP8            JP9

      CX486S           Open          Open       pins 2 & 3     pins 1 & 2
                                                  closed        closed

     80486SX           Open          Open       pins 2 & 3       Open
                                                  closed

     80487SX        pins 2 & 3    pins 2 & 3    pins 1 & 2       Open
                      closed        closed        closed

     CX4786DX       pins 1 & 2    pins 2 & 3    pins 1 & 2     pins 1 & 2
                      closed        closed        closed        closed

   80486DX/DX2      pins 1 & 2    pins 2 & 3    pins 1 & 2       Open
                      closed        closed        closed

     80486DX4       pins 1 & 2    pins 2 & 3    pins 1 & 2       Open
                      closed        closed        closed

       P24T         pins 1 & 2    pins 2 & 3    pins 1 & 2     pins 2 & 3
                      closed        closed        closed        closed

       P24D            Open          Open          Open          Open

                      CPU TYPE CONFIGURATION (CONT)

       Type            JP12          JP22          JP23          JP50

      CX486S           Open       pins 1 & 2       Open       pins 2 & 3
                                    closed                      closed

     80486SX           Open       pins 1 & 2       Open          Open
                                    closed

     80487SX           Open       pins 1 & 2       Open          Open
                                    closed

     CX4786DX          Open       pins 1 & 2       Open       pins 2 & 3
                                    closed                      closed

   80486DX/DX2         Open       pins 1 & 2       Open          Open
                                    closed

     80486DX4          Open       pins 1 & 2       Open          Open
                                    closed

       P24T            Open       pins 2 & 3       Open          Open
                                    closed

       P24D           Closed         Open         Closed      pins 1 & 2
                                                                closed

                          CPU SPEED CONFIGURATION

    Speed       JJ2         JP38         JP39         JP40        JP48

    20MHz      1 & 2        Open        Closed        Open        1 & 2

    25MHz      1 & 2       Closed       Closed        Open        1 & 2

    33MHz      1 & 2       Closed        Open        Closed       1 & 2

    33iMHz     1 & 2       Closed        Open        Closed       2 & 3
    (DX4)

    40MHz      1 & 2        Open        Closed       Closed       1 & 2

   50iMHz      1 & 2       Closed       Closed        Open        1 & 2

    50MHz      1 & 2       Closed       Closed       Closed       1 & 2

    50iMHz     2 & 3       Closed       Closed        Open        2 & 3
    (DX4)

   66iMHz      1 & 2       Closed        Open        Closed       1 & 2

  Note: Pins designated should be in the closed position.

               CPU VOLTAGE CONFIGURATION

          Voltage                       JP2

            3.3v             pins 2 & 3, 5 & 6 closed

            5.0v             pins 1 & 2, 4 & 5 closed

         BUS SPEED CONFIGURATION

      CPU speed              JP46

      <= 33MHz        pins 2 & 3 closed

       > 33MHz        pins 1 & 2 closed

