UNIDENTIFIED

401 386SX

Processor         80386SX
Processor Speed   16MHz
Chip Set          VLSI
Max. Onboard DRAM 8MB
Cache             None
BIOS              Award
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Power LED & keylock       JP1        Turbo switch              JP15

  Speaker                   JP2        External battery          JP18

  Reset switch           JP3 or JP17   Turbo LED                 JP20

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   NPU mode select synchronous with         JP4             Open
      CPU

      NPU mode select synchronous with         JP4            Closed
      oscillator installed at X1

  »   Factory configured - do not alter        JP5              N/A

  »   Factory configured - do not alter        JP8           pins 2 & 3
                                                              closed

  »   Factory configured - do not alter        JP9              N/A

  »   Monitor type select color               JP10           pins 1 & 2
                                                              closed

      Monitor type select monochrome          JP10           pins 2 & 3
                                                              closed

  »   Factory configured - do not alter       JP11             Open

  »   Factory configured - do not alter       JP12             Open

  »   Factory configured - do not alter       JP13            Closed

  »   Factory configured - do not alter       JP14             Open

  »   BIOS type select 27256                  JP16           pins 2 & 3
                                                              closed

      BIOS type select 27512                  JP16           pins 1 & 2
                                                              closed

                            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

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

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

     2MB        (18) 411000        NONE           NONE           NONE

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

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

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

     5MB        (18) 411000     (18) 411000     (2) 256K x    (2) 256K x
                                                    9             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

  DRAM mode   Max. Pages    Wait States   DRAM speed     JP6       JP7

     F4           4           0 or 1         80ns       2 & 3     2 & 3

     F1           1           0 or 1        100ns       1 & 2     2 & 3

    W01           4           1 or 2        100ns       2 & 3     1 & 2

    W02           4           2 or 3        120ns       1 & 2     1 & 2

  Note: Pins designated should be in the closed position.