
DD & TT ENTERPRISE USA COMPANY

DT-LB134 (9-BIT SIMM VERSION)

Processor            80386DX/CX486DLC/80486SX/80486DX/80486DX2/ODP586SX
Processor Speed      20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set             Symphony
Max. Onboard DRAM    64MB
SRAM Cache           64/256KB
BIOS                 AMI
Dimensions           330mm x 218mm
I/O Options          PS/2 mouse, 32-bit VESA local bus slot
NPU Options          CX87DLC/80387DX

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Turbo LED           J1/pins 1 & 2    Speaker             J2B/pins 1 & 4

  Turbo switch        J1/pins 3 & 4    Mouse port               J11A
                                       header

  Reset switch        J1/pins 5 & 6    PS/2 mouse port          J11B

  Power LED &              J2A         32-bit VESA               S1
  keylock                              local bus

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

      Factory configured-do not alter     E2/pins 1 & 2       unknown

      Factory configured-do not alter     E2/pins 3 & 4       unknown

     Monitor type select color           E2/pins 5 & 6       closed

      Monitor type select monochrome      E2/pins 5 & 6        open

      ATCLK iOSC/2                         E7/1-3, 4-6        closed

      ATCLK iOSC/1                         E7/3-5, 2-4        closed

     Mouse port enabled                       E12            closed

      Mouse port disabled                      E12             open

     CMOS memory normal operation             E13             open

      CMOS memory clear                        E13            closed

     Onboard speaker enabled              J2B/pins 1 &       closed
                                                2

      Onboard speaker disabled             J2B/pins 1 &        open
                                                2

      Burst mode 3-2-2-2                       JP1            closed

      Burst mode 2-1-1-1                       JP1             open

      Cache wait state select 0 wait           JP2            closed
      states

      Cache wait state select 1 wait           JP2             open
      state

                  SRAM JUMPER CONFIGURATION

       Jumper                64K                  256K

         E1A           pins 2 & 3 closed   pins 1 & 2 closed

         E1B           pins 2 & 3 closed   pins 1 & 2 closed

         E1C                 open                closed

         E1D                 open                closed

         E1E                 open                closed

         E1F           pins 1 & 2 closed   pins 1 & 2 closed

         E1G           pins 1 & 2 closed   pins 1 & 2 closed

         E1H           pins 1 & 2 closed   pins 1 & 2 closed

         E1I           pins 1 & 2 closed   pins 1 & 2 closed

         E1J                closed               closed

         E1K                closed               closed

             SRAM CONFIGURATION

     Size          Cache           TAG

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

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

              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

                                   CPU TYPE CONFIGURATION

   Type          E3              E4            E5             E6            E7        E8

  80386DX       open          3&4,9&10       1&3,4&6   3&4,9&11,10&12,    1&3,4&6    3&4
    33

  80386DX       open        3&4,7&8,9&10     1&3,4&6    3&4,9&11,10&12    1&3,4&6    5&6
    40

  CX486DLC      open          3&4,9&10       1&3,4&6    3&4,9&11,10&12    1&3,4&6    3&4
    33

  CX486DLC      open        3&4,7&8,9&10     1&3,4&6    3&4,9&11,10&12    1&3,4&6    5&6
    40

  80486SX       2&3           1&2,9&10       3&5,4&6   1&2,5&6,7&9,8&10   1&3,4&6    1&2
    20

  80486SX       2&3           1&2,9&10       3&5,4&6   1&2,5&6,7&9,8&10   1&3,4&6   3&4,5&6
    25

  80486SX       2&3           1&2,9&10       3&5,4&6   1&2,5&6,7&9,8&10   1&3,4&6    3&4
    33

  80486DX    1&2,3&4,5&6      1&2,9&10       3&5,4&6   1&2,5&6,7&9,8&10   1&3,4&6    3&4
    33

  80486DX2   1&2,3&4,5&6      1&2,9&10       3&5,4&6   1&2,5&6,7&9,8&10   1&3,4&6   3&4,5&6
    50

  80486DX    1&2,3&4,5&6  1&2,5&6,7&8,9&10   1&3,2&4   1&2,5&6,7&9,8&10   3&5,2&4   3&4,5&6
    50

  80486DX2   1&2,3&4,5&6      1&2,9&10       3&5,4&6   1&2,5&6,7&9,8&10   1&3,4&6    3&4
    66

  Notes: Pins indicated should be in the closed position.

  Early versions of the board (model DT-LB133) do not support the 80486 series processor.

