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.