
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.

