UNIDENTIFIED

386SX-S NON CACHE MAINBOARD MODEL 3

Processor         80386SX/CX486SLC
Processor Speed   25/33/40MHz
Chip Set          Unidentified
Max. Onboard DRAM 16MB
Cache             None
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            JP1      Turbo LED                   JP7

  Turbo switch                JP5      Power LED & keylock         JP8

  Reset switch                JP6      Speaker                     JP9

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                JP3            Closed

      Monitor type select monochrome           JP3             Open

  »   NPU synchronous with CPU                 JP4           pins 1 & 2
                                                              closed

      NPU asynchronous with CPU                JP4           pins 2 & 3
                                                              closed

  »   CPU speed select 40MHz                  JP10           pins 1 & 2
                                                              closed

      CPU speed select 33MHz                  JP10           pins 2 & 3
                                                              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

      4MB         (2) 1M x 9      (2) 1M x 9

      8MB         (2) 4M x 9         NONE

      16MB        (2) 4M x 9      (2) 4M x 9