
WYSE TECHNOLOGY, INC.

WYSE DECISION 386SX/20

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

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Reset switch                J1       Turbo switch                J4

  Power LED & keylock         J2       Turbo LED                   J5

  Speaker                     J3       External battery            J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CPU speed select 20MHz                   JP1           pins 1 & 2
                                                              closed

      CPU speed select 16MHz                   JP1           pins 2 & 3
                                                              closed

     Monitor type select color                JP5           pins 1 & 2
                                                              closed

      Monitor type select monochrome           JP5           pins 2 & 3
                                                              closed

     Battery select internal                  JP6           pins 1 & 2
                                                              closed

      Battery select external                  JP6           pins 2 & 3
                                                              closed

     Power good signal detect from            JP7           pins 2 & 3
      power supply                                            closed

      Power good signal detect from            JP7           pins 1 & 2
      board                                                   closed

                            DRAM CONFIGURATION

  Size      Bank 0     Bank 1     Bank 2    Bank 3     Bank 4     Bank 5

  1MB 1       (8)        (4)       NONE      NONE       NONE       NONE
            44256       41256

  2MB 1       (8)        (4)       NONE      NONE        (2)     (2) 256K
            44256       41256                          256K x      x 9
                                                         9

  3MB 1       (8)        (4)       NONE      NONE      (2) 1M      NONE
            44256       41256                           x 9

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

  5MB 1       (8)        (4)       NONE      NONE      (2) 1M    (2) 1M x
            44256       41256                           x 9         9

   5MB       NONE       NONE        (2)       (2)      (2) 1M    (2) 1M x
                                   256K x    256K x     x 9         9
                                     9         9

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

   8MB       NONE       NONE       (2) 1M    (2) 1M    (2) 1M    (2) 1M x
                                    x 9       x 9       x 9         9

  Note 1 :Banks 0 and 1 are filled at the factory with DIP chips.


