
UNIDENTIFIED

80386 SX

Processor              80386SX
Processor Speed        16/20MHz
Chip Set               Unidentified
Video Chip Set         None
Maximum Onboard Memory 4MB
Maximum Video Memory   None
Cache                  None
BIOS                   AMI
Dimensions             330mm x 217mm
I/O Options            None
NPU Options            80387SX

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo LED                  JP1       Turbo switch                JP4

  Speaker                    JP2       Power LED & keylock         JP5

  Reset switch               JP3       External battery           JP15

  Note: JP4 may be a 2-pin jumper.

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      ROM wait state select 2 wait             J1           Pins 2 & 3
      states (16MHz CPU)                                      closed

      ROM wait state select 3 wait             J1           Pins 1 & 2
      states (20MHz CPU)                                      closed

      Turbo enabled                           JP4           Pins 2 & 3
                                                              closed

      Turbo disabled                          JP4           Pins 1 & 2
                                                              closed

      NPU not installed                       JP6           Pins 2 & 3
                                                              closed

      NPU installed                           JP6           Pins 1 & 2
                                                              closed

      Parity disabled                         JP7              Open

      Parity enabled                          JP7             Closed

      RAM wait state select 0 wait            JP8           Pins 1 & 2
      states (only if JP9 is open)                            closed

      RAM wait state select 1 wait            JP8           Pins 2 & 3
      state (only if JP9 is open)                             closed

      JP8 enabled                             JP9              Open

      8042 keyboard controller pin 29         JP9             Closed

     Factory configured - do not alter       JP10             Open
      (for AMI BIOS & 8042)

      Monitor type select color               JP11          Pins 2 & 3
                                                              closed

      Monitor type select monochrome          JP11          Pins 1 & 2
                                                              closed

      Power good signal detect from           JP13          Pins 2 & 3
      power supply                                            closed

      Power good signal detect from           JP13          Pins 1 & 2
      board                                                   closed

      12v battery charge disabled             JP14          Pins 1 & 2
                                                              closed

      12v battery charge enabled              JP14          Pins 2 & 3
                                                              closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

     512KB       (18) 41256       None

     640KB       (18) 41256     (18) 4164

      1MB        (18) 41256    (18) 41256

      2MB        (18) 411000      None

      4MB        (18) 411000   (18) 411000

               DRAM JUMPER CONFIGURATION

            Size                        J3

           512KB             Pins 1 & 2, 3 & 4 closed

           640KB             Pins 2 & 4, 3 & 5 closed

            1MB              Pins 3 & 5, 4 & 6 closed

            2MB              Pins 1 & 3, 4 & 6 closed

            4MB              Pins 1 & 3, 4 & 6 closed

                  CPU SPEED SELECTION

           Speed                        J2

           16MHz             Pins 3 & 4, 7 & 8 closed

           20MHz             Pins 3 & 4, 5 & 6 closed

