TOP MICROSYSTEMS, INC.

JC-386SX

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

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Speaker                     J1       Reset switch                J4

  Turbo LED                   J2       External battery            J5

  Power LED & keylock         J3

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color (CGA           JP1            Closed
      only)

      Monitor type select monochrome           JP1             Open
      (any other)

  »   CMOS memory normal operation             JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP2           pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

  Size      Bank 0       P0        Bank 1       P1       Bank 2   Bank 3

  512KB       (4)        (2)        NONE       NONE      NONE      NONE
            44256       41256

   1MB        (4)        (2)         (4)        (2)      NONE      NONE
            44256       41256      44256      41256

  1.5MB       (4)        (2)         (4)        (2)       (2)      NONE
            44256       41256      44256      41256      256K x
                                                           9

   2MB        (4)        (2)        NONE       NONE      NONE      NONE
            441000     411000

   2MB        (4)        (2)         (4)        (2)       (2)       (2)
            44256       41256      44256      41256      256K x    256K x
                                                           9         9

  2.5MB       (4)        (2)         (4)        (2)      NONE      NONE
            441000     411000      44256      41256

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

   3MB        (4)        (2)         (4)        (2)       (2)      NONE
            411000     411000      44256      41256      256K x
                                                           9

   4MB        (4)        (2)         (4)        (2)      NONE      NONE
            441000     411000      441000     411000

  4.5MB       (4)        (2)         (4)        (2)       (2)      NONE
            441000     411000      441000     411000     256K x
                                                           9

   5MB        (4)        (2)         (4)        (2)      (2) 1M    (2) 1M
            44256       41256      44256      41256       x 9       x 9

   5MB        (4)        (2)         (4)        (2)       (2)       (2)
            441000     411000      441000     411000     256K x    256K x
                                                           9         9

   6MB        (4)        (2)         (4)        (2)      (2) 1M    NONE
            441000     411000      441000     411000      x 9

   8MB        (4)        (2)         (4)        (2)      (2) 1M    (2) 1M
            441000     411000      441000     411000      x 9       x 9