
ELISA TECHNOLOGY, INC.

LM-486EISA (BASEBOARD)

Processor         80486SX/80487SX/80486DX/80486DX2
Processor Speed   16/20/25/33/50(internal)/66(internal)MHz
Chip Set          OPTI
Max. Onboard DRAM 128MB
Cache             256KB
BIOS              AMI
Dimensions        330mm x 225mm
I/O Options       CPU expansion card slot, 32-bit VESA local bus slots (2)
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                  Location   Purpose                    Location

  Speaker                    J1       Reset switch                 S1

  Power LED & keylock        J2       CPU expansion card           S2

  Turbo switch              JP14      32-bit VESA local bus      S3 & S4
                                      slots

  Turbo LED                 JP15

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not alter        BM1              N/A

     Factory configured - do not alter        BM2              N/A

     Factory configured - do not alter     JP1 - JP6          Open

     Factory configured - do not alter        JP2             Open

     Factory configured - do not alter        JP3             Open

     Factory configured - do not alter        JP4             Open

     Factory configured - do not alter        JP5             Open

     Factory configured - do not alter        JP6             Open

     Bus master on baseboard (U26)            JP7           pins 1 & 2
      enabled                                                 closed

      Bus master on baseboard (U26)            JP7           pins 2 & 3
      disabled                                                closed

     Monitor type select monochrome           JP8             Open

      Monitor type select color                JP8            Closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      4MB        (4) 1M x 9       NONE

      8MB        (4) 1M x 9    (4) 1M x 9

     16MB        (4) 4M x 9       NONE

     20MB        (4) 1M x 9    (4) 4M x 9

     32MB        (4) 4M x 9    (4) 4M x 9

     68MB        (4) 1M x 9    (4) 16M x 9

     80MB        (4) 4M x 9    (4) 16M x 9

     128MB       (4) 16M x 9   (4) 16M x 9

                        CPU TYPE CONFIGURATION

       Type             JP9             JP10               JP11

    80487SX-16         Closed          Closed        pins 2 & 3 closed

    80487SX-20         Closed          Closed        pins 2 & 3 closed

    80486SX-16         Closed          Closed        pins 2 & 3 closed

    80486SX-20         Closed          Closed        pins 2 & 3 closed

    80486SX-25         Closed           Open         pins 1 & 2 closed

    80486DX-25         Closed           Open         pins 1 & 2 closed

    80486DX-33          Open            Open         pins 1 & 2 closed

   80486DX2-50         Closed           Open         pins 1 & 2 closed

   80486DX2-66          Open            Open         pins 1 & 2 closed

[Image]

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not alter        JP2           pins 2 & 3
                                                              closed

     Factory configured - do not alter        JP4             Open

     Bus master on CPU card enabled           JP5             Open

      Bus master on CPU card disabled          JP5            Closed

                            CACHE CONFIGURATION

  Size     Bank 0    Bank 1      TAG      Dirty bit     TAG     TAG (U27)
                                (U16)      (U25)      (U26)

  64KB      (4) 8K   (4) 8K    (1) 16K    (1) 8K x     NONE      (1) 8K x
             x 8      x 8        x 1         8                      8

  128KB    (4) 32K    NONE     (1) 16K    (1) 8K x     NONE      (1) 8K x
             x 8                 x 1         8                      8

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

  512KB      (4)      NONE     (1) 64K    (1) 8K x     NONE     (1) 32K x
            128K x               x 1         8                      8
              8

                        CACHE JUMPER CONFIGURATION

  Size    JP6      JP8      JP9       JP10     JP11      JP12      JP13

  64KB     2 &    Open      Open      Open     Open      Open      Open
           3

  128KB    1 &   Closed     Open      Open    Closed     Open      Open
           2

  256KB    2 &   Closed    Closed     Open    Closed    Closed     Open
           3

  512KB    1 &   Closed    Closed    Closed   Closed    Closed    Closed
           2

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

         Type                JP1               JP3              JP7

      80487SX-16        pins 1 & 2, 3 &     pins 1 & 2         Closed
                           4 closed           closed

      80487SX-20        pins 1 & 2, 3 &     pins 1 & 2         Closed
                           4 closed           closed

      80486SX-16          pins 2 & 3           Open            Closed
                            closed

      80486SX-20          pins 2 & 3           Open            Closed
                            closed

      80486SX-25          pins 2 & 3           Open             Open
                            closed

      80486DX-25        pins 1 & 2, 3 &     pins 2 & 3          Open
                           4 closed           closed

      80486DX-33        pins 1 & 2, 3 &     pins 2 & 3          Open
                           4 closed           closed

     80486DX2-50        pins 1 & 2, 3 &     pins 2 & 3          Open
                           4 closed           closed

     80486DX2-66        pins 1 & 2, 3 &     pins 2 & 3          Open
                           4 closed           closed

