
SOFTSYS COMPUTER CENTERS, INC.

80386SX

Processor         80386SX
Processor Speed   8/16MHz
Chip Set          C & T NEAT
Max. Onboard DRAM 8MB
SRAM Cache        None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Power LED & keylock         J1       Turbo LED                   J5

  Speaker                     J2       External battery            J6

  Turbo switch                J3       Auxiliary keyboard          J7

  Reset switch                J4

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     NPU mode select synchronous with         JP4             open
      CPU
                                               JP6           pins 2 & 3
                                                              closed

      NPU mode select asynchronous with        JP4            closed
      CPU
                                               JP6           pins 1 & 2
                                                              closed

      NPU enabled                              JP5            closed

      NPU disabled                             JP5             open

     BIOS ROM type select 27256               JP7           pins 1 & 2
                                                              closed

      BIOS ROM type select 27512               JP7           pins 2 & 3
                                                              closed

     Monitor type select monochrome           JP8           pins 2 & 3
                                                              closed

      Monitor type select color                JP8           pins 1 & 2
                                                              closed

     8042 switch CPU speed select pin         JP9           pins 1 & 2
      23                                                      closed

      8042 switch CPU speed select pin         JP9           pins 2 & 3
      30                                                      closed

                            DRAM CONFIGURATION

    Size       Bank 0(SIMM)       Bank 1      Bank 2 (DIP)  Bank 3 (DIP)
                                 (SIMM)

   512KB 1     (2) 256K x 9       NONE           NONE           NONE

   512KB 2         NONE           NONE        (18) 41256        NONE

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

    1MB 2          NONE           NONE        (18) 41256     (18) 41256

   1.5MB 1     (2) 256K x 9    (2) 256K x 9   (18) 41256        NONE

   1.5MB 2     (2) 256K x 9       NONE        (18) 41256     (18) 41256

    2MB 1      (2) 256K x 9    (2) 256K x 9   (18) 41256     (18) 41256

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

    2MB 2          NONE           NONE        (18) 411000    (18) 411000

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

    4MB 2       (2) 1M x 9        NONE        (18) 411000    (18) 411000

    5MB 1       (2) 1M x 9     (2) 1M x 9     (18) 41256     (18) 41256

    5MB 1       (2) 1M x 9     (2) 1M x 9     (18) 411000       NONE

    5MB 2       (2) 1M x 9     (2) 1M x 9     (18) 41256     (18) 41256

    6MB 1       (2) 1M x 9     (2) 1M x 9     (18) 411000    (18) 411000

    6MB 2       (2) 1M x 9     (2) 1M x 9     (18) 411000    (18) 411000

    8MB 1       (2) 4M x 9     (2) 4M x 9        NONE           NONE

  Note 1 :Jumpers JP1 and JP2 pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10,and
  11 & 12 closed.

  Note 2 :Jumpers JP1 and JP2 pins 1 & 12, 2 & 11, 3 & 10, 4 & 9, 5 & 8,
  and 6 & 7 closed.

