EVEREX SYSTEMS, INC.

STEP 386CX

Processor                  80286/80386SX
Processor Speed            Unidentified
Chip Set                   Unidentified
Video Chip Set             None
Maximum Onboard Memory     8MB
Maximum Video Memory       None
Cache                      None
BIOS                       Unidentified
Dimensions                 254mm x 218mm
I/O Options                Parallel port, serial ports (2), Instep Board
                           connector
NPU Options                80287/80387SX

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                                CONNECTIONS

  Purpose                 Location    Purpose                    Location

  Serial port 1             CN1       Parallel port                CN3

  Serial port 2             CN2       Instep Board connector       CN4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      IDE interface enabled                    J4              Open

      IDE interface disabled                   J4             Closed

                            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

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

     2.5MB       (2) 256K x 9   (2) 1M x 9        None           None

     2.5MB       (2) 1M x 9     (2) 256K x 9      None           None

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

      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

                     SERIAL PORT 1 INTERRUPT SELECTION

                 IRQ                                   JP2

                   IRQ3                        Pins 9 & 10 closed

  »                IRQ4                        Pins 11 & 12 closed

                     SERIAL PORT 2 INTERRUPT SELECTION

                 IRQ                                   JP2

  »                IRQ3                         Pins 5 & 6 closed

                   IRQ4                         Pins 7 & 8 closed

                     PARALLEL PORT INTERRUPT SELECTION

                 IRQ                                   JP2

                   IRQ5                         Pins 3 & 4 closed

  »                IRQ7                         Pins 1 & 2 closed

                  HANDSHAKE SELECTION (PORT 1)

            Setting                           JP3

            Enabled              1 & 2, 4 & 5, 7 & 8, 10 & 11

            Disabled             2 & 3, 5 & 6, 8 & 9, 11 & 12

  Note: Pins designated should be in the closed position.

                  HANDSHAKE SELECTION (PORT 2)

            Setting                           JP4

            Enabled              1 & 2, 4 & 5, 7 & 8, 10 & 11

            Disabled             2 & 3, 5 & 6, 8 & 9, 11 & 12

  Note: Pins designated should be in the closed position.

                        DTE/DCE SELECTION (PORT 1)

               Setting                                 JP5

                 DTE                     1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 &
                                                   10, 11 & 12

                 DCE                     1 & 3, 2 & 4, 5 & 7, 6 & 8, 9 &
                                                   11, 12 & 14

  Note: Pins designated should be in the closed position.

                        DTE/DCE SELECTION (PORT 2)

               Setting                                 JP6

                 DTE                     1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 &
                                                   10, 11 & 12

                 DCE                     1 & 3, 2 & 4, 5 & 7, 6 & 8, 9 &
                                                   11, 12 & 14

  Note: Pins designated should be in the closed position.

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                       MISCELLANEOUS TECHNICAL NOTE

            To upgrade to an 80386SX processor, install 80386SX Instep
            Board at CN4.