TEKNOR INDUSTRIAL COMPUTERS, INC.

TEK-AT4

Device     Single board computer
Type
Processor  80486SX/80486DX/80486DX2/80486DX4
Processor  25/33/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   VLSI 82C486
Maximum    16MB
Onboard
Memory
Cache      Unidentified
BIOS       Unidentified
Dimensions 178mm x 119mm
I/O        Floppy drive interface, IDE interface, parallel port, serial
Options    ports (2)

[Image]

                                CONNECTIONS

  Purpose                    Location   Purpose                  Location

  IDE interface                 J1      Serial port 2              J4

  Floppy drive interface        J2      Power connector            J5

  Chassis fan power            J2A      Serial port 1              J6

  Multifunction connector       J3      Parallel port              J7

                        USER CONFIGURABLE SETTINGS

                Function                    Label           Position

  »   Factory configured - do not            SW1          Unidentified
      alter

  »   Boot from flash                    SW2/pins 1 &        Closed
                                              2

      Boot from drive                    SW2/pins 1 &         Open
                                              2

  »   Serial port select for VT100       SW2/pins 3 &        Closed
      download COM2                           4

      Serial port select for VT100       SW2/pins 3 &         Open
      download COM1                           4

  »   Display mode select VT100          SW2/pins 5 &        Closed
                                              6

      Display mode select standard       SW2/pins 5 &         Open
                                              6

  »   Download mode select remote        SW2/pins 7 &        Closed
                                              8

      Download mode select normal        SW2/pins 7 &         Open
                                              8

  »   Power detection select power            W1        Pins 1 & 2 closed
      failure

      Power detection select low              W1        Pins 2 & 3 closed
      battery

  »   SRAM battery backup select no           W2              Open
      battery

      SRAM battery backup select vbatt        W2             Closed

  »   IDE interface enabled                   W3              Open

      IDE interface disabled                  W3             Closed

  »   Watchdog timer enabled                  W4             Closed

      Watchdog timer disabled                 W4              Open

  »   Power monitoring disabled               W5              Open

      Power monitoring enabled                W5             Closed

  »   Flash BIOS installed                    W6             Closed

      Flash BIOS not installed                W6              Open

  »   BIOS type select EPROM                  W7              Open

      BIOS type select flash                  W7             Closed

  »   Teknor BIOS extension enabled           W8              Open

      Teknor BIOS extension disabled          W8             Closed

  »   Monitor type select                    W19              Open
      monochrome/EGA/VGA

      Monitor type select CGA                W19             Closed

       SIMM CONFIGURATION

      Size          Bank 0

      1MB        (4) 256K x 9

      2MB        (4) 512K x 9

      4MB         (4) 1M x 9

      16MB        (4) 4M x 9

                 CACHE CONFIGURATION

  Note: The location of the cache is unidentified.

         CACHE JUMPER CONFIGURATION

         Size                  W20

  32K x 8, 128K x 8     Pins 1 & 2 closed

  256K x 8, 512K x 8    Pins 2 & 3 closed

                          CPU SPEED SELECTION

      Speed        W18/pins 1 & 2    W18/pins 3 & 4    W18/pins 5 & 6

      25MHz             Open             Closed            Closed

      33MHz            Closed            Closed            Closed

      50iMHz            Open             Closed            Closed

      50MHz            Closed            Closed            Closed

      66iMHz           Closed            Closed            Closed

      75iMHz            Open             Closed            Closed

     100iMHz           Closed            Closed            Closed

                            CPU TYPE SELECTION

       Type                W15               W16                W17

      80486SX           Pins 1 & 2           Open              Open
                         closed

      80486DX           Pins 2 & 3        Pins 1 & 2          Closed
                         closed             closed

     80486DX2           Pins 2 & 3        Pins 1 & 2          Closed
                         closed             closed

     80486DX4           Pins 2 & 3        Pins 1 & 2          Closed
                         closed             closed

                  BUSCLK SIGNAL SELECTION

            Speed                          W14A

            16MHz                   Pins 2 & 3 closed

            25MHz                   Pins 1 & 2 closed

            33MHz                          Open

  Note: The location of the above jumper is unidentified.

                          SERIAL PORT 2 SELECTION

    Setting        W9      W10       W11         W12       W13      W14

  »    RS-232     1 & 2   1 & 2     Open        Open      1 & 2    1 & 2

       RS-485     2 & 3   2 & 3    Closed      Closed     2 & 3    2 & 3

  Note: Pins designated should be in the closed position.