
UNIDENTIFIED

80486L-ISA

Processor             80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed       20/25/33/50(internal)/50/66(internal)MHz
Chip Set              SIS
Max. Onboard DRAM     32MB
Cache                 64/128/256KB
BIOS                  AMI/Award
Dimensions            254mm x 218mm
I/O Options           32-bit local bus card slot
NPU Options           None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  32-bit local bus card       CN1      Reset switch               JP13

  External battery            JP1      Power LED & keylock        JP14

  Speaker                    JP11      Turbo LED                  JP15

  Turbo switch               JP12

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                JP3             Open

      Monitor type select monochrome           JP3            Closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      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

                    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

                  CACHE JUMPER CONFIGURATION

        Size                 JP6                  JP7

        64KB                 Open                 Open

        128KB          pins 1 & 2 closed         Closed

        256KB          pins 2 & 3 closed         Closed

                          CPU TYPE CONFIGURATION

     Type         Speed     Oscillator      JP4        JP8         JP9

    80486SX       16MHz        32MHz       1 & 2       Open       2 & 3

    80486SX       20MHz        40MHz       1 & 2       Open       2 & 3

   ODP486SX       50MHz        25MHz       2 & 3      1 & 2      1 & 2, 3
                                                                   & 4

    80487SX       25MHz        25MHz       2 & 3      1 & 2      1 & 2, 3
                                                                   & 4

    80486DX       25MHz        25MHz       2 & 3      2 & 3      1 & 2, 3
                                                                   & 4

    80486DX       33MHz        33MHz       2 & 3      2 & 3      1 & 2, 3
                                                                   & 4

    80486DX       50MHz        50MHz       2 & 3      2 & 3      1 & 2, 3
                                                                   & 4

   80486DX2       50MHz        25MHz       2 & 3      2 & 3      1 & 2, 3
                                                                   & 4

   80486DX2       66MHz        33MHz       2 & 3      2 & 3      1 & 2, 3
                                                                   & 4

  Note:The location of JP4 is unidentified. Pins designated should be in
  the closed position.

