DEICO ELECTRONICS, INC.

386NSX

Processor               80386SX
Processor Speed         16/20/25MHz
Chip Set                OPTI
Max. Onboard DRAM       16MB
Cache                   None
BIOS                    AMI
Dimensions              330mm x 218mm
I/O Options             Parallel port, serial ports (2), floppy drive
                        interface, IDE interface, bus mouse port
NPU Options             80387SX

[Image]

                                CONNECTIONS

  Purpose                Location       Purpose               Location

  Serial port 1             J13         Reset switch            J19

  Serial port 2             J14         Speaker                 J21

  Parallel port             J15         Power LED &             J22
                                        keylock

  IDE interface             J16         Turbo switch       J23 pins 1 & 2

  Floppy drive              J17         Turbo LED          J23 pins 2 & 3
  interface

  IDE interface LED         J18         External battery         R1

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Serial port 2 select IRQ3                W1            pins 1 & 2
                                                              closed

      Serial port 2 select IRQ9                W1            pins 2 & 3
                                                              closed

      Serial port 2 disabled                   W1            pins 3 & 4
                                                              closed

  »   Serial port 1 select IRQ4                W2            pins 1 & 2
                                                              closed

      Serial port 1 select IRQ5                W2            pins 2 & 3
                                                              closed

      Serial port 1 disabled                   W2            pins 3 & 4
                                                              closed

  »   Parallel IRQ select IRQ7                 W3            pins 1 & 2
                                                              closed

      Parallel IRQ select IRQ5                 W3            pins 2 & 3
                                                              closed

      Parallel port select no interrupt        W3            pins 3 & 4
                                                              closed

      Flash BIOS reprogram mode enabled        W4            pins 1 & 2
                                                              closed

      Flash BIOS reprogram mode                W4            pins 2 & 3
      disabled                                                closed

  »   Monitor type select color                W5            pins 1 & 2
                                                              closed

      Monitor type select monochrome           W5            pins 2 & 3
                                                              closed

  »   BIOS address line normal                 W6            pins 2 & 3
      operation                                               closed

      BIOS address line inverted               W6            pins 1 & 2
                                                              closed

  »   Mouse IRQ select IRQ9                    W7            pins 1 & 2
                                                              closed

      Mouse IRQ select IRQ5                    W7            pins 2 & 3
                                                              closed

  »   CMOS memory normal operation             W8            pins 1 & 2
                                                              closed

      CMOS memory clear                        W8            pins 2 & 3
                                                              closed

  »   Factory configured - do not alter        W9            pins 1 & 2
                                                              closed

  »   Battery type select internal             W11            Closed

      Battery type select external             W11             Open

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

     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

     9MB        (2) 256K x 9   (2) 256K x 9   (2) 4M x 9        NONE

     10MB       (2) 1M x 9     (2) 4M x 9        NONE           NONE

     12MB       (2) 1M x 9     (2) 1M x 9     (2) 4M x 9        NONE

     16MB       (2) 4M x 9     (2) 4M x 9        NONE           NONE

                   CPU SPEED CONFIGURATION

        Size                  W9                  W10

        16MHz          pins 2 & 3 closed          Open

        20MHz          pins 1 & 2 closed   pins 1 & 2 closed

        25MHz          pins 1 & 2 closed   pins 2 & 3 closed