
CACHE COMPUTERS, INC.

SX 386-20 (Model 308)

Processor         80386SX
Processor Speed   16/20MHz
Chip Set          VIA
Max. Onboard DRAM 8MB
Cache             None
BIOS              AMI/Award/Phoenix/Quadtel
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Turbo switch                J3       External battery            J8

  Turbo LED                   J6       Speaker                     J11

  Power LED & keylock         J7       Reset switch                SW3

  Note:The location of the expansion slots is unidentified.

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

     CPU speed select 20MHz                 J1                Open

      CPU speed select 16MHz                 J1               Closed

     NPU disabled                           J2               Closed

      NPU enabled                            J2                Open

     Monitor type select                    J4                Open
      monochrome

      Monitor type select color              J4               Closed

     DMA speed select 8/10MHz               J99             pins 2 & 3
                                                              closed

      DMA speed select 4MHz                  J99              Closed

      DMA speed select synchronous           J99             pins 1 & 2
      with CPU                                                closed

     Factory configured - do not           SW2/5               Off
      alter

     Factory configured - do not           SW2/6               Off
      alter

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2         Bank 3

     512KB       (2) 256K x        NONE          NONE           NONE
                     9

      1MB        (2) 256K x     (2) 256K x       NONE           NONE
                     9              9

     1.5MB       (2) 256K x     (2) 256K x     (2) 256K x       NONE
                     9              9              9

      2MB        (2) 256K x     (2) 256K x     (2) 256K x   (2) 256K x 9
                     9              9              9

      2MB        (2) 1M x 9        NONE          NONE           NONE

      3MB        (2) 256K x     (2) 256K x    (2) 1M x 9        NONE
                     9              9

      4MB        (2) 1M x 9     (2) 1M x 9       NONE           NONE

      5MB        (2) 256K x     (2) 256K x    (2) 1M x 9     (2) 1M x 9
                     9              9

      6MB        (2) 1M x 9     (2) 1M x 9    (2) 1M x 9        NONE

      8MB        (2) 1M x 9     (2) 1M x 9    (2) 1M x 9     (2) 1M x 9

                    DRAM JUMPER/SWITCH CONFIGURATION

  Size      J10      J13      SW2/1      SW2/2       SW2/3      SW2/4

  512KB    2 & 3    2 & 3      Off        Off         Off        Off

   1MB     2 & 3    2 & 3      On         Off         Off        Off

  1.5MB    2 & 3    2 & 3      Off         On         Off        Off

   2MB     2 & 3    2 & 3      On          On         Off        Off

   2MB     1 & 2    1 & 2      Off        Off         On         On

   3MB     2 & 3    1 & 2      Off         On         On         Off

   4MB     1 & 2    1 & 2      On         Off         On         On

   5MB     2 & 3    1 & 2      On          On         On         Off

   6MB     1 & 2    1 & 2      Off         On         On         On

   8MB     1 & 2    1 & 2      On          On         On         On

  Note:Pins designated should be in the closed position.

                 DRAM WAIT STATE CONFIGURATION

  Read States    Write States        SW2/7          SW2/8

      NONE           NONE             Off             On

       1               1              Off            Off

       1               2              On             Off

       2               2              On              On

