
UNIDENTIFIED

386CM

Processor         80386DX
Processor Speed   25MHz
Chip Set          Intel
Max. Onboard DRAM 16MB
Cache             32KB
BIOS              Unidentified
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387DX/3167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            BC1       Reset switch               J19

  Power LED & keylock         J17       Speaker                    J20

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     NPU synchronous with CPU                 JP1           pins 1 & 2
                                                              closed

      NPU asynchronous with CPU                JP1           pins 2 & 3
                                                              closed

     BIOS type select 27512                   JP4           pins 1 & 2
                                                              closed

      BIOS type select 27256                   JP4           pins 2 & 3
                                                              closed

     Non-cacheable region select              JP5           pins 1 & 2
      0E0000-0FFFFF (27512)                                   closed

      Non-cacheable region select              JP5           pins 2 & 3
      0F0000-0FFFFF (27256)                                   closed

     NPU disabled                             JP6           pins 1 & 2
                                                              closed

      NPU enabled                              JP6           pins 2 & 3
                                                              closed

     NPU disabled                             JP8           pins 1 & 2
                                                              closed

      NPU enabled                              JP8           pins 2 & 3
                                                              closed

     32-bit memory access wait state          JP10          pins 1 & 2
      select 4 wait states                                    closed

      32-bit memory access wait state          JP10          pins 2 & 3
      select 3 wait states                                    closed

     Turbo speed enabled                      J21             Open

      Turbo speed disabled                     J21            Closed

     32-bit memory RAS# & CAS# T state        JP25          pins 1 & 2
      select 1 T state                                        closed

      32-bit memory RAS# & CAS# T state        JP25          pins 2 & 3
      select 0.5 T state                                      closed

     Monitor type select color                SW2           pins 1 & 2
                                                              closed

      Monitor type select monochrome           SW2           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

   Size       Extended       Bank 0      Bank 1      Bank 2      Bank 3

    1MB          0KB        (4) 256K      NONE        NONE        NONE
                              x 9

    1MB         384KB       (4) 256K      NONE        NONE        NONE
                              x 9

    2MB        1408KB       (4) 256K    (4) 256K      NONE        NONE
                              x 9         x 9

    3MB        2432KB       (4) 256K    (4) 256K    (4) 256K      NONE
                              x 9         x 9         x 9

    4MB        3456KB       (4) 256K    (4) 256K    (4) 256K     (4) 256K
                              x 9         x 9         x 9          x 9

    4MB        3456KB       (4) 1M x      NONE        NONE        NONE
                               9

    5MB        4480KB       (4) 1M x    (4) 256K      NONE        NONE
                               9          x 9

    6MB        5504KB       (4) 1M x    (4) 256K    (4) 256K      NONE
                               9          x 9         x 9

    7MB        6528KB       (4) 1M x    (4) 256K    (4) 256K     (4) 256K
                               9          x 9         x 9          x 9

    8MB        7552KB       (4) 1M x    (4) 1M x      NONE        NONE
                               9           9

    9MB        8576KB       (4) 1M x    (4) 1M x    (4) 256K      NONE
                               9           9          x 9

   10MB        9600KB       (4) 1M x    (4) 1M x    (4) 256K     (4) 256K
                               9           9          x 9          x 9

   12MB        10624KB      (4) 1M x    (4) 1M x    (4) 1M x      NONE
                               9           9           9

   12MB        11648KB      (4) 1M x    (4) 1M x    (4) 1M x      NONE
                               9           9           9

   13MB        12672KB      (4) 1M x    (4) 1M x    (4) 1M x     (4) 256K
                               9           9           9           x 9

   16MB        13696KB      (4) 1M x    (4) 1M x    (4) 1M x     (4) 1M x
                               9           9           9            9

   16MB        14720KB      (4) 1M x    (4) 1M x    (4) 1M x     (4) 1M x
                               9           9           9            9

          DRAM JUMPER CONFIGURATION

  Size     SW4/1    SW4/2     SW4/3    SW4/4

   1MB       On       On       On       On

   1MB      Off       On       On       On

   2MB       On      Off       On       On

   3MB      Off      Off       On       On

   4MB       On       On       Off      On

   4MB       On       On       Off      On

   5MB      Off       On       Off      On

   6MB       On      Off       Off      On

   7MB      Off      Off       Off      On

   8MB       On       On       On       Off

   9MB      Off       On       On       Off

  10MB       On      Off       On       Off

  12MB      Off      Off       On       Off

  12MB       On       On       Off      Off

  13MB      Off       On       Off      Off

  16MB       On      Off       Off      Off

  16MB      Off      Off       Off      Off

  Note:The location of SW4 is unidentified.

                   CACHE CONFIGURATION

            Size                       Bank 0

            0KB                         NONE

            32KB                     (4) 8K x 8

  Note: The location of the cache bank is unidentified

                        CACHE JUMPER CONFIGURATION

      Size              JP2                JP3                JP22

      0KB            pins 2 & 3         pins 2 & 3      pins 2 & 3 closed
                      closed              closed

      32KB           pins 1 & 2         pins 1 & 2      pins 1 & 2 closed
                      closed              closed

                          DMA MODE CONFIGURATION

                  Mode                         JP7              JP9

  Normal (processor holds on all DMA &      pins 1 & 2       pins 1 & 2
            refresh cycles)                  closed           closed

  Bypass (processor holds on cache DMA      pins 2 & 3       pins 2 & 3
       invalidation cycles only)             closed           closed

