INTERNATIONAL INSTRUMENTATION, INC.

OEM1/L-ISA

Processor              80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed        16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set               Advanced
Max. Onboard DRAM      128MB
Cache                  64/128/256KB
BIOS                   AMI
Dimensions             254mm x 218mm
I/O Options            32-bit local bus slot
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo switch                H1       Power LED & keylock         H5

  Turbo LED                   H2       External battery            JP1

  Reset switch                H3       32-bit local bus slot       S1

  Speaker                     H4

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color               JP12             Open

      Monitor type select monochrome          JP12            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

      5MB         (4) 256K x 9    (4) 1M x 9

      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

      64MB        (4) 16M x 9        NONE

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1       TAG (U34)

     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                 JP2                  JP3

        64KB                 Open                 Open

        128KB          pins 2 & 3 closed         Closed

        256KB          pins 1 & 2 closed         Closed

                         CPU JUMPER CONFIGURATION

      Type              J4               J5            J7          J8

    80486SX          pins 2 & 3         Open         Closed       Open
                      closed

    ODP486SX      pins 1 & 2, 3 &    pins 1 & 2      Closed       Open
                     4 closed          closed

    80487SX       pins 1 & 2, 3 &    pins 1 & 2      Closed       Open
                     4 closed          closed

    80486DX       pins 1 & 2, 3 &    pins 1 & 2      Closed       Open
                     4 closed          closed

    80486DX2      pins 1 & 2, 3 &    pins 1 & 2      Closed       Open
                     4 closed          closed