
EFA CORPORATION

4DMS-HL3G

Processor  CX486M6/CX486S/80486SX/SL80486SX/CX486M7/CX486DX/AM486DX/
           80486DX/AM486DXL/SL80486DX/CX486DX2/AM486DX2/80486DX2/
           AM486DX2L/SL80486DX2/CX486DX2-V/80486DX4/Pentium Overdrive/SL
           Pentium Overdrive
Processor  20/25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed      100(internal)MHz
Chip Set   SIS
Max.       128MB
Onboard
DRAM
Cache      64/128/256/512/1024KB
BIOS       Award
Dimensions 291mm x 223mm
I/O        32-bit VESA local bus slots (3)
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            JP1       Speaker                   JP40

  Turbo switch               JP37       Turbo LED                 JP41

  Reset switch               JP38       32-bit VESA local      SL1 - SL3
                                        bus slots

  Power LED & keylock        JP39

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     Monitor type select color                JP2           pins 2 & 3
                                                              closed

      Monitor type select monochrome/VGA       JP2             Open

     CMOS memory normal operation             JP3           pins 1 & 2
                                                              closed

      CMOS memory clear                        JP3           pins 2 & 3
                                                              closed

     Factory configured - do not alter        JP8           pins 1 & 2
                                                              closed

     Factory configured - do not alter        JP20          pins 2 & 3
                                                              closed

     Factory configured - do not alter        JP28          pins 1 & 2
                                                              closed

     BIOS voltage select 5V                   JP29          pins 1 & 2
                                                              closed

      BIOS voltage select 12V                  JP29          pins 2 & 3
                                                              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         (1) 512K x        NONE           NONE           NONE
                    36

     4MB         (1) 256K x     (1) 256K x     (1) 512K x        NONE
                    36              36             36

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

     8MB         (1) 256K x     (1) 256K x     (1) 512K x    (1) 1M x 36
                    36              36             36

     8MB         (1) 512K x     (1) 512K x    (1) 1M x 36        NONE
                    36              36

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

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

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

     12MB        (1) 512K x     (1) 512K x    (1) 1M x 36    (1) 1M x 36
                    36              36

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

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

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

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

     20MB        (1) 512K x     (1) 512K x    (1) 4M x 36        NONE
                    36              36

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

     24MB        (1) 512K x     (1) 512K x    (1) 1M x 36    (1) 4M x 36
                    36              36

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

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

     32MB       (1) 2M x 36    (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

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

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

                        DRAM CONFIGURATION (CONT)

     36MB         (1) 512K x     (1) 512K x    (1) 4M x 36   (1) 4M x 36
                     36              36

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

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

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

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

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

     48MB        (1) 4M x 36    (1) 8M x 36       NONE           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    (1) 8M x 36       NONE

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

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

     65MB         (1) 256K x    (1) 16M x 36      NONE           NONE
                     36

     68MB        (1) 1M x 36    (1) 8M x 36    (1) 8M x 36       NONE

     68MB        (1) 1M x 36    (1) 16M x 36      NONE           NONE

     72MB        (1) 1M x 36    (1) 1M x 36    (1) 8M x 36   (1) 8M x 36

     72MB        (1) 1M x 36    (1) 1M x 36     (1) 16M x        NONE
                                                   36

     80MB        (1) 4M x 36    (1) 8M x 36    (1) 8M x 36       NONE

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

     96MB        (1) 4M x 36    (1) 4M x 36    (1) 8M x 36   (1) 8M x 36

     96MB        (1) 8M x 36    (1) 8M x 36    (1) 8M x 36       NONE

     96MB        (1) 4M x 36    (1) 4M x 36     (1) 16M x        NONE
                                                   36

     128MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36   (1) 8M x 36

     128MB       (1) 16M x 36   (1) 16M 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) 32K x 8

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

        1MB           (4) 128K x 8      (4) 128K x 8       (1) 128K x 8

            Note: The 32K x 8 chips have 28 pins, and the sockets have
            32. When installing these chips, leave the topmost four pins
            empty.

                          CPU TYPE CONFIGURATION

       Type     JP4     JP5      JP6      JP7     JP9     JP10      JP11

   CX486M6     1 & 2    Open     Open    2 & 3    1 & 2   1 & 2    2 & 3

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

   80486SX     1 & 2    Open     Open     Open    1 & 2   Open      Open

  SL80486SX    1 & 2   1 & 2     Open    4 & 5    1 & 2   2 & 3    1 & 2

   CX486M7     1 & 2    Open    1 & 2    2 & 3    1 & 2   1 & 2    2 & 3

   CX486DX     1 & 2    Open    1 & 2    2 & 3    1 & 2   1 & 2    2 & 3

   AM486DX     1 & 2    Open    1 & 2     Open    1 & 2   Open      Open

   80486DX     1 & 2    Open     Open     Open    1 & 2   Open      Open

   AM486DXL    1 & 2    Open    1 & 2     Open    1 & 2   Open      Open

  SL80486DX    1 & 2   1 & 2    1 & 2    4 & 5    1 & 2   2 & 3    1 & 2

   CX486DX2    1 & 2    Open    1 & 2    2 & 3    1 & 2   1 & 2    2 & 3

   AM486DX2    1 & 2    Open    1 & 2     Open    1 & 2   Open      Open

   80486DX2    1 & 2    Open     Open     Open    1 & 2   Open      Open

  AM486DX2L    1 & 2    Open    1 & 2     Open    1 & 2   Open      Open

  SL80486DX2   1 & 2   1 & 2    1 & 2    4 & 5    1 & 2   2 & 3    1 & 2

  CX486DX2-V   2 & 3    Open    1 & 2    2 & 3    1 & 2   1 & 2    2 & 3

   80486DX4    2 & 3   1 & 2    1 & 2    4 & 5    2 & 3   2 & 3    1 & 2

     P24T      1 & 2    Open    1 & 2     Open    1 & 2   Open      Open

     P24D      1 & 2   1 & 2    1 & 2    4 & 5    1 & 2   2 & 3    1 & 2

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

       Type     JP12    JP13     JP14     JP15    JP16     JP21     JP22

   CX486M6      2 & 3   2 & 3    2 & 3    Open    2 & 3    Open    1 & 2

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

   80486SX      2 & 3   Open     2 & 3    Open    Open     Open    2 & 3

  SL80486SX     2 & 3   Open     2 & 3    Open    Open     Open    2 & 3

   CX486M7      2 & 3   2 & 3    1 & 2    3 & 4   2 & 3    2 & 3   1 & 2

   CX486DX      2 & 3   2 & 3    1 & 2    3 & 4   2 & 3    2 & 3   1 & 2

   AM486DX      2 & 3   3 & 4    1 & 2    1 & 2   Open     Open    2 & 3

   80486DX      2 & 3   Open     1 & 2    3 & 4   Open     Open    2 & 3

   AM486DXL     2 & 3   3 & 4    1 & 2    1 & 2   Open     Open    2 & 3

  SL80486DX     2 & 3   Open     1 & 2    3 & 4   Open     Open    2 & 3

   CX486DX2     2 & 3   2 & 3    1 & 2    3 & 4   2 & 3    1 & 2   1 & 2

   AM486DX2     2 & 3   3 & 4    1 & 2    1 & 2   Open     Open    2 & 3

   80486DX2     2 & 3   Open     1 & 2    3 & 4   Open     Open    2 & 3

  AM486DX2L     2 & 3   3 & 4    1 & 2    1 & 2   Open     Open    2 & 3

  SL80486DX2    2 & 3   Open     1 & 2    3 & 4   Open     Open    2 & 3

  CX486DX2-V    2 & 3   2 & 3    1 & 2    3 & 4   2 & 3    1 & 2   1 & 2

   80486DX4     2 & 3   Open     1 & 2    3 & 4   Open     Open    2 & 3

     P24T       1 & 2   Open     1 & 2    2 & 3   Open     Open    2 & 3

     P24D       1 & 2   Open     1 & 2    2 & 3   Open     Open    2 & 3

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

        Type      JP23      JP36      JP42     JP43      JP44      JP45

    CX486M6       2 & 3     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

     CX486S       2 & 3     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

    80486SX       1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

   SL80486SX      1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

    CX486M7       2 & 3     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

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

    AM486DX       1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

    80486DX       1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

    AM486DXL      1 & 2     1 & 2,    Open     1 & 2    2 & 3      Open
                            4 & 5

   SL80486DX      1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

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

    AM486DX2      1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

    80486DX2      1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

   AM486DX2L      1 & 2     1 & 2,    Open     1 & 2    2 & 3      Open
                            4 & 5

   SL80486DX2     1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

   CX486DX2-V     2 & 3     2 & 3,    Open     1 & 2    1 & 2      1 & 2
                            5 & 6

    80486DX4      1 & 2     2 & 3,   1 & 2     Open     1 & 2      Open
                            5 & 6

      P24T        1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

      P24D        1 & 2     1 & 2,    Open     1 & 2    1 & 2      Open
                            4 & 5

  Note: Pins designated should be in the closed position.

                    CPU SPEED CONFIGURATION

   Speed      JP24      JP25       JP26       JP30      JP31

   20MHz     1 & 2      2 & 3     2 & 3      1 & 2     1 & 2

   25MHz     2 & 3      2 & 3     1 & 2      1 & 2     1 & 2

   33MHz     2 & 3      1 & 2     2 & 3      1 & 2     1 & 2

   40MHz     1 & 2      2 & 3     1 & 2      2 & 3     2 & 3

  50iMHz     2 & 3      2 & 3     1 & 2      1 & 2     1 & 2

   50MHz     1 & 2      1 & 2     2 & 3      2 & 3     2 & 3

  66iMHz     2 & 3      1 & 2     2 & 3      1 & 2     1 & 2

  75iMHz     2 & 3      2 & 3     1 & 2      1 & 2     1 & 2

  80iMHz     1 & 2      2 & 3     1 & 2      2 & 3     2 & 3

  100iMHz    2 & 3      1 & 2     2 & 3      1 & 2     1 & 2

  Note: Pins designated should be in the closed position.

                        CACHE JUMPER CONFIGURATION

   Size      JP17     JP18     JP19      JP27     JP32     JP33     JP34

   64KB     1 & 2    2 & 3     Open      2 & 3    1 & 2    1 & 2    1 & 2

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

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

   512KB    2 & 3    1 & 2     1 & 2,    2 & 3    2 & 3    2 & 3    2 & 3
                               3 & 4

    1MB     1 & 2    1 & 2     2 & 3,    1 & 2    2 & 3    2 & 3    2 & 3
                               4 & 5

  Note: Pins designated are in the closed position.

