ZYTEX COMPUTERS, INC.

TB486

Processor         80486DX
Processor Speed   33MHz
Chip Set          ETEQ
Max. Onboard DRAM 32MB
Cache             64/256KB
BIOS              AMI/MR
Dimensions        330.2mm x 218.4mm
I/O OPTIONS       32-bit external memory card slot
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  Reset switch                J4        Power LED & Keylock       JP26

  External battery            JP2       Speaker                   JP27

  32-bit external             JP5       Turbo LED                  T1
  memory card

  Turbo switch               JP25

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select monochrome           J4              Open

      Monitor type select color                J4             Closed

  »   Filter circuitry disabled                JP3            Closed

      Filter circuitry enabled                 JP3             Open

  »   NPU read speed select 3 wait            JP24             Open
      states

      NPU read speed select 2 wait            JP24            Closed
      states

              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          TAG

     64KB        (8) 8K x 8    (2) 8K x 8

     256KB       (8) 32K x 8   (2) 8K x 8

                        CACHE JUMPER CONFIGURATION

   Size         JP19          JP20         JP21       JP22        JP23

   64KB       pins 2 & 3   pins 2 & 3      Open       Open        Open
               closed        closed

   256KB      pins 1 & 2   pins 1 & 2     Closed     Closed      Closed
               closed        closed