
SEANIX TECHNOLOGY, INC.

486LC1

Processor        80386DX/80486SX/80487SX/80486DX/80486DX2
Processor Speed  20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set         Contaq
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      None
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo LED                   P1       Power LED & keylock         P4

  Turbo switch                P2       Reset switch                P5

  Speaker                     P3       External battery            P7

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color               JP22            Closed

      Monitor type select monochrome          JP22             Open

     CMOS memory normal operation            JP23          pins 1 & 2
                                                              closed

      CMOS memory clear                       JP23          pins 2 & 3
                                                              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) 1M x 9     (4) 256K x 9

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

      16MB        (4) 4M x 9         NONE

      17MB        (4) 4M x 9     (4) 256K x 9

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

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

                           CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG        DIRTY (U1)

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8     (1) 8K x 8

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

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

                     CACHE JUMPER CONFIGURATION

   Size     JP13      JP14     JP15      JP16      JP19      JP20

   64KB     Open      Open     Open      Open     2 & 3      Open

  128KB     Closed    Open     Closed    Open     1 & 2     2 & 3

  256KB     Closed   Closed    Closed    Closed   2 & 3     1 & 2

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

    Type       JP1      JP2       JP3      JP4       JP5     JP6     JP7

  80386DX     Open      Open     Open      Open     Open     Open   Open

  CX486DLC    Closed   Closed    Closed    Open     Open     Open   Open

  80486SX     Open      Open     Open      Open     Open      2 &   1 & 2
                                                              3

  80487SX     Open      Open     Open     Closed    Closed    2 &   1 & 2
                                                              3

  80486DX     Open      Open     Open      Open     Closed    2 &   2 & 3
                                                              3

  80486DX2    Open      Open     Open      Open     Closed    2 &   2 & 3
                                                              3

  Note: Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT)

    Type        JP8      JP9      JP10     JP17    JP18     JP21    JP24

  80386DX     Closed     Open     Open     2 & 3   2 & 3    2 & 3   1 & 2

  CX486DLC    Closed     Open     Open     2 & 3   2 & 3    2 & 3   N/A

  80486SX      Open      1 & 2   Closed    1 & 2   1 & 2    1 & 2   2 & 3

  80487SX      Open      1 & 2   Closed    1 & 2   1 & 2    1 & 2   2 & 3

  80486DX      Open      1 & 2   Closed    1 & 2   1 & 2    1 & 2   2 & 3

  80486DX2     Open      1 & 2   Closed    1 & 2   1 & 2    1 & 2   2 & 3

            Note: Pins designated should be in the closed position. JP24
            may not be present on all boards. The location is
            unidentified.

  80386 ATCLK CONFIGURATION

  ATCLK      JP11     JP12

    4       Closed   Closed

    6       Closed    Open

    8        Open    Closed

    10       Open     Open

  80486 ATCLK CONFIGURATION

  ATCLK      JP11     JP12

    3       Closed    Open

    4        Open    Closed

    5        Open     Open

    6       Closed   Closed

