
UNIDENTIFIED

80386 SX/16/20

Processor         80386SX
Processor Speed   16/20MHz
Chip Set          C & T NEAT
Max. Onboard DRAM 8MB
Cache             None
BIOS              Unidentified
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Reset switch              JP1        Turbo switch              JP4

  Power LED & keylock       JP2        Turbo LED                 JP5

  Speaker                   JP3        External battery          JP6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     NPU mode select synchronous with        JP8             Closed
      CPU

      NPU mode select asynchronous            JP8              Open
      with CPU

     NPU disabled                            JP9             Closed

      NPU enabled                             JP9              Open

     Pipeline mode enabled                   JP10            Closed

      Pipeline mode disabled                  JP10             Open

     Monitor type select color               JP11            Closed

      Monitor type select monochrome          JP11             Open

                            DRAM CONFIGURATION

     Size          Bank 0          Bank 1         Bank 2        Bank 3

    512KB        (18) 41256         NONE           NONE          NONE

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

    640KB        (18) 41256      (18) 4164         NONE          NONE

    640KB           NONE            NONE        (2) 256K x   (2) 64K x 9
                                                    9

     1MB         (18) 41256      (18) 41256        NONE          NONE

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

    1.5MB        (18) 41256      (18) 41256     (2) 256K x       NONE
                                                    9

    1.64MB       (18) 41256      (18) 4164      (2) 256K x   (2) 256K x 9
                                                    9

     2MB         (18) 41256      (18) 41256     (2) 256K x   (2) 256K x 9
                                                    9

     2MB         (18) 411000        NONE           NONE          NONE

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

     3MB         (18) 41256      (18) 41256     (2) 1M x 9       NONE

     4MB         (18) 411000    (18) 411000        NONE          NONE

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

    4.64MB       (18) 41256      (18) 4164      (2) 1M x 9    (2) 1M x 9

     5MB         (18) 41256      (18) 41256     (2) 1M x 9    (2) 1M x 9

     6MB         (18) 411000    (18) 411000     (2) 1M x 9       NONE

     8MB         (18) 411000    (18) 411000     (2) 1M x 9    (2) 1M x 9

                         DRAM JUMPER CONFIGURATION

            Size                                 JP12

            512KB             pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

            512KB             pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15,
                                          and 17 & 18 closed

            640KB             pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

            640KB             pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15,
                                          and 17 & 18 closed

             1MB              pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

             1MB              pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15,
                                          and 17 & 18 closed

            1.5MB             pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

           1.64MB             pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

             2MB              pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

             2MB              pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

             2MB              pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15,
                                          and 17 & 18 closed

                     DRAM JUMPER CONFIGURATION (CONT)

            Size                                 JP12

             3MB              pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

             4MB              pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

             4MB              pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15,
                                          and 17 & 18 closed

           4.64MB             pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

             5MB              pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

             6MB              pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15,
                                          and 17 & 18 closed

             8MB              pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14,
                                          and 16 & 17 closed

                    BATTERY CONFIGURATION

        Type                 JP6                  JP7

      Internal         pins 2 & 3 closed   pins 2 & 3 closed

      External              Closed         pins 1 & 2 closed

