EVEREX SYSTEMS, INC.

STEP 386SX20 GATE ARRAY EV-18107C

Processor              80386SX
Processor Speed        20MHz
Chip Set               C & T
Max. onboard DRAM      16MB
Cache                  64KB
BIOS                   AMI
Dimensions             355mm x 304mm
I/O Options            Floppy drive interface, IDE interface, parallel
                       port, serial ports (2)
NPU Options            80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Parallel port               J7       Floppy drive interface     U100

  IDE interface               J8       Serial port 2              U106

  Speaker                     JP2      Serial port 1              U107

  External battery            JP9      LED connector               LED

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Cache LED disabled                       J3             Closed

      Cache LED enabled                        J3              Open

  »   BIOS type select 27256                  JP8              Open

      BIOS type select 27512                  JP8             Closed

  »   Floppy drive interface enabled          JP9           pins 1 & 2
                                                              closed

      Floppy drive interface disabled         JP9           pins 3 & 4
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

     512KB        (2) 256K x 9       NONE

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

      2MB         (2) 1M x 9         NONE

     2.5MB        (2) 256K x 9    (2) 1M x 9

      4MB         (2) 1M x 9      (2) 1M x 9

      8MB         (2) 4M x 9         NONE

     8.5MB        (2) 256K x 9    (2) 4M x 9

      10MB        (2) 1M x 9      (2) 4M x 9

      16MB        (2) 4M x 9      (2)4M x 9

                   ONBOARD SERIAL/PARALLEL CONFIGURATION

      Port             Connector             IRQ             Address

      COM1               U107                IRQ4              3F8h

      COM2               U106                IRQ3              2F8h

      LPT2                J7                 IRQ7              378h

  Note:The onboard serial & parallel port configurations are fixed and
  cannot be altered or disabled.