UNIDENTIFIED

386-20/25

Processor              80386SX (exact location unidentified)
Processor Speed        20/25MHz
Chip Set               Unidentified
Maximum Onboard Memory 10MB (on external memory card)
Cache                  None
BIOS                   Unidentified
Dimensions             228mm x 220mm
I/O Options            External memory card
NPU Options            80387SX (exact location unidentified)

[Image]

                            CONNECTIONS

        Function          Label          Function           Label

  External battery          X1      Turbo LED                x8

  Reset switch              X4      Speaker                  X17

  Status port               X5      Turbo switch             X22

  Power LED & keylock       x6      External memory card     SL1

                        USER CONFIGURABLE SETTINGS

                 Setting                     Label           Position

  »   Speed select through keyboard            S1           Pins 2 & 3
                                                              closed

      Speed select through turbo switch        S1           Pins 1 & 2
                                                              closed

  »   I/O slot wait state select 4 wait        S2           Pins 1 & 2
      states                                                  closed

      I/O slot wait state select 6 wait        S2           Pins 2 & 3
      states                                                  closed

  »   Factory configured - do not alter        S5              N/A

  »   Factory configured - do not alter      SW1/1             N/A

  »   NPU disabled                           SW1/2             Off

      NPU enabled                            SW1/2              On

  »   Floppy drive speed does not            SW1/3             Off
      affect CPU speed

      Floppy drive speed at CPU speed        SW1/3              On
      8MHz

  »   Monitor type select monochrome         SW1/4             Off

      Monitor type select color              SW1/4              On

  »   Factory configured - do not alter       X23              N/A

                                DRAM

     Size        Bank 0        Bank 1        Bank 2        Bank 3

     1MB         1MB kit        None          None          None

     1MB         1MB kit        None          None          None

     2MB         1MB kit        None        1MB kit         None

     2MB         1MB kit        None        1MB kit         None

     4MB          None         4MB kit        None          None

     5MB         1MB kit       4MB kit        None          None

     6MB         1MB kit       4MB kit      1MB kit         None

     6MB         1MB kit       4MB kit      1MB kit         None

     8MB          None         4MB kit        None       4MB module

     9MB         1MB kit       4MB kit        None       4MB module

     10MB        1MB kit       4MB kit      1MB kit      4MB module

     10MB        1MB kit       4MB kit      1MB kit      4MB module

  Note: Banks are located on the external memory card.

                DRAM SWITCH

  Size     SW1/5   SW1/6    SW1/7    SW1/8

   1MB      On       On       On       On

   1MB      On       On       On      Off

   2MB      On       On      Off       On

   2MB      On       On      Off      Off

   4MB      On      Off       On       On

   5MB      On      Off       On      Off

   6MB      On      Off      Off       On

   6MB      On      Off      Off      Off

   8MB      Off      On       On       On

   9MB      Off      On       On      Off

  10MB      Off      On      Off       On

  10MB      Off      On      Off      Off

                             BIOS

       Setting                S3                   S4

        27128          Pins 1 & 2 closed   Pins 1 & 2 closed

        27256          Pins 2 & 3 closed   Pins 1 & 2 closed

        27512          Pins 2 & 3 closed   Pins 2 & 3 closed

                      MISCELLANEOUS TECHNICAL NOTE

  The location of pin 1 on all jumpers and the switch is unidentified.