
EVERSOURCE COMPUTERS, INC.

HT18 386SX

Processor         80386SX
Processor Speed   16/20/25MHz
Chip Set          Headland
Max. Onboard DRAM 8MB
Cache             None
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Turbo button                JP2      Turbo switch               JP10

  External battery            JP6      Power LED & keylock        JP11

  Reset switch                JP7      Speaker                    JP17

  Turbo LED                   JP9

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                JP1            Closed

      Monitor type select monochrome           JP1             Open

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

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

     4.5MB      (2) 256K x 9   (2) 1M x 9     (2) 1M x 9        NONE

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

                        PIPELINE MODE CONFIGURATION

      Size          JP12          JP13           JP15           JP16

    Disabled        Open        pins 1 & 2     pins 2 & 3     pins 1 & 2
                                 closed         closed         closed

    Enabled        Closed       pins 2 & 3     pins 1 & 2     pins 2 & 3
                                 closed         closed         closed

