UNIDENTIFIED

386SX P9

Processor         80386SX
Processor Speed   16MHz
Chip Set          OPTI
Max. Onboard DRAM 2MB
Cache             None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card slot
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Reset switch               J1        Turbo LED                   J5

  Power LED & keylock        J2        External battery            J6

  Speaker                    J3        32-bit external             S1
                                       memory card

  Turbo switch               J4

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

  »   Turbo LED enabled                        JP1           pins 2 & 3
                                                              closed

      Turbo LED disabled                       JP1           pins 1 & 3
                                                              closed

  »   Factory configured - do not alter        JP2             Open

  »   NPU mode select synchronous with         JP3             Open
      CPU

      NPU mode select asynchronous with        JP3            Closed
      CPU

  »   NPU enabled                              JP4            Closed

      NPU disabled                             JP4             Open

  »   Factory configured - do not alter        JP5            Closed

  »   Factory configured - do not alter        JP6            Closed

  »   Crystal select OSC2                      JP7           pins 2 & 3
                                                              closed

      Crystal select OSC1                      JP7           pins 1 & 2
                                                              closed

  »   Monitor type select color                 J8            Closed

      Monitor type select monochrome            J8             Open

  »   Power good signal detect from            JP9           pins 1 & 2
      power supply                                            closed

      Power good signal detect from            JP9           pins 2 & 3
      board                                                   closed

  »   BIOS type select 27256                   JP10          pins 1 & 2
                                                              closed

      BIOS type select 27128                   JP10          pins 2 & 3
                                                              closed

                       DRAM CONFIGURATION

    Size        Bank 0       Bank 1      Bank 2       Bank 3

    512KB     (4) 44256       NONE        NONE         NONE

     1MB      (4) 44256    (4) 44256      NONE         NONE

    1.5MB     (4) 44256    (4) 44256    (4) 44256      NONE

     2MB      (4) 44256    (4) 44256    (4) 44256    (4) 44256

                   DRAM PARITY CONFIGURATION

    Size        Bank 0       Bank 1      Bank 2       Bank 3

    512KB     (2) 41256       NONE        NONE         NONE

     1MB      (2) 41256    (2) 41256      NONE         NONE

    1.5MB     (2) 41256    (2) 41256    (2) 41256      NONE

     2MB      (2) 41256    (2) 41256    (2) 41256    (2) 41256