
TEKNOR INDUSTRIAL COMPUTERS, INC.

TEK-AT4L PLUS

Device Type Single board computer
Processor   80486SX/80486SX2/80486DX/AM486DX2/80486DX2/AM486DX4/

            80486DX4/AM 5X86
Processor   25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set    VLSI 82C486
Maximum     128MB (EDO & SDRAM supported)
Onboard
Memory
Cache       128/256/512/1024/2048KB
BIOS        Unidentified
Dimensions  341mm x 119mm
I/O Options Floppy drive interface, IDE interface, parallel port, PS/2
()          mouse interface, serial ports (2)

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  IDE interface               J1       Power connector             J5

  Floppy drive interface      J2       Serial port 1               J6

  Front panel connector       J3       Parallel port               J7

  PS/2 mouse interface        J3A      Chassis fan power           J10

  Serial port 2               J4

                        USER CONFIGURABLE SETTINGS

              Function                    Label            Position

      Boot from flash                  SW1/pins 1 &         Closed
                                            2

      Boot from drive                  SW1/pins 1 &          Open
                                            2

      Serial port select for VT100     SW1/pins 3 &         Closed
      download COM2                         4

      Serial port select for VT100     SW1/pins 3 &          Open
      download COM1                         4

      Display mode select VT100        SW1/pins 5 &         Closed
                                            6

      Display mode select standard     SW1/pins 5 &          Open
                                            6

      Download mode select remote      SW1/pins 7 &         Closed
                                            8

      Download mode select normal      SW1/pins 7 &          Open
                                            8

     Factory configured - do not          SW2           Unidentified
      alter

     Power fail detection                 W7          Pins 1 & 2 closed

      Low battery detection                W7          Pins 2 & 3 closed

     Vbatt disabled                       W10               Open

      Vbatt enabled                        W10              Closed

     IOCHRDY signal to IDE                W11               Open
      interface disabled

      IOCHRDY signal to IDE                W11              Closed
      interface enabled

     Watchdog timer enabled               W12              Closed

      Watchdog timer disabled              W12               Open

     Power monitoring disabled            W13               Open

      Power monitoring enabled             W13              Closed

     Flash BIOS write enabled             W14              Closed

      Flash BIOS write disabled            W14               Open

     BIOS write select EPROM              W15               Open

      BIOS write select flash              W15              Closed

     Teknor BIOS extension                W16               Open
      enabled

      Teknor BIOS extension                W16              Closed
      disabled

     PS/2 mouse enabled                  W19A              Closed

      PS/2 mouse disabled                 W19A               Open

     Monitor type select color            W22               Open

      Monitor type select                  W22              Closed
      monochrome

      Parallel port IRQ select             W25         Pins 1 & 2 closed
      IRQ5

      Parallel port IRQ select             W25         Pins 2 & 3 closed
      IRQ7

       SIMM CONFIGURATION

      Size          Bank 0

      1MB        (4) 256K x 9

      4MB         (4) 1M x 9

      16MB        (4) 4M x 9

      32MB        (4) 8M x 9

               SIMM CONFIGURATION

      Size           Bank 0         Bank 1

       1MB         (1) 256K x        None
                       36

       2MB         (1) 512K x        None
                       36

       2MB         (1) 256K x     (1) 256K x
                       36             36

       3MB         (1) 512K x     (1) 256K x
                       36             36

       4MB        (1) 1M x 36        None

       4MB         (1) 512K x     (1) 512K x
                       36             36

       5MB        (1) 1M x 36     (1) 256K x
                                      36

       6MB        (1) 1M x 36     (1) 512K x
                                      36

       8MB        (1) 2M x 36        None

       8MB        (1) 1M x 36     (1) 1M x 36

       9MB        (1) 2M x 36     (1) 256K x
                                      36

      10MB        (1) 2M x 36     (1) 512K x
                                      36

      12MB        (1) 2M x 36     (1) 1M x 36

      16MB        (1) 4M x 36        None

      16MB        (1) 2M x 36     (1) 2M x 36

      17MB        (1) 4M x 36     (1) 256K x
                                      36

      18MB        (1) 4M x 36     (1) 512K x
                                      36

      20MB        (1) 4M x 36     (1) 1M x 36

      24MB        (1) 4M x 36     (1) 2M x 36

      32MB        (1) 8M x 36        None

      32MB        (1) 4M x 36     (1) 4M x 36

                CACHE CONFIGURATION

  Note: The location of the cache is unidentified.

                         CPU SPEED SELECTION

               Speed                             W21

               25MHz               Pins 1 & 2, 3 & 4, 5 & 6 closed

               33MHz                   Pins 3 & 4, 5 & 6 closed

              50iMHz               Pins 1 & 2, 3 & 4, 5 & 6 closed

              66iMHz                   Pins 3 & 4, 5 & 6 closed

              75iMHz               Pins 1 & 2, 3 & 4, 5 & 6 closed

              100iMHz                  Pins 3 & 4, 5 & 6 closed

                            CPU TYPE SELECTION

      Type           W17            W18            W19            W26

    80486SX          Open        Pins 1 & 2       Open           Open
                                   closed

    80486SX2         Open        Pins 1 & 2       Open           Open
                                   closed

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

    AM486DX2      Pins 1 & 2     Pins 2 & 3     Pins 1 & 2      Closed
                    closed         closed        closed

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

  80486DX2 (WB)   Pins 1 & 2     Pins 2 & 3     Pins 1 & 2       Open
                    closed         closed        closed

     ODP486       Pins 1 & 2     Pins 2 & 3     Pins 2 & 3       Open
                    closed         closed        closed

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

    AM486DX4      Pins 1 & 2     Pins 2 & 3     Pins 1 & 2       Open
                    closed         closed        closed

  80486DX4 (WB)   Pins 1 & 2     Pins 2 & 3     Pins 1 & 2       Open
                    closed         closed        closed

    AM 5X86       Pins 1 & 2     Pins 2 & 3     Pins 1 & 2      Closed
                    closed         closed        closed

  CPU VOLTAGE SELECTION

   Voltage       W27

    3.3v         Open

     5v         Closed

         BUSCLK SIGNAL SELECTION

        Speed                W20

        16MHz         Pins 2 & 3 closed

        25MHz         Pins 1 & 2 closed

        33MHz                Open

                   DMA CHANNEL SELECTION

       Channel              W23                 W24

          1              Pins 1 & 2         Pins 1 & 2
                           closed             closed

          3              Pins 2 & 3         Pins 2 & 3
                           closed             closed

                          SERIAL PORT 2 SELECTION

  Setting      W1        W2         W3         W4        W5         W6

  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.

                              EDOUT SELECTION

               Setting                                W8

        EDOUT left to software                       Open

  EDOUT to pin 29 & ground to pin 17       Pins 1 & 3, 2 & 4 closed

  EDOUT to pin 17 & ground to pin 29       Pins 1 & 2, 3 & 4 closed

  Note: The above listed pins are located on J2.

                              HDOUT SELECTION

               Setting                                 W9

        HDOUT left to software                        Open

  HDOUT to pin 33 & ground to pin 27        Pins 1 & 3, 2 & 4 closed

  HDOUT to pin 27 & ground to pin 33        Pins 1 & 2, 3 & 4 closed

  Note: The above listed pins are located on J2.

