
UNIDENTIFIED

80386SX-20/25

Processor         80386SX
Processor Speed   16/20/25MHz
Chip Set          C & T
Max. Onboard DRAM 16MB (8MB on external memory card)
Cache             None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card
NPU Options       80287/80387SX

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Power LED & keylock        J17       Turbo LED                  J22

  Speaker                    J18       External battery           JP30

  Reset switch               J19       32-bit external            SL1
                                       memory card

  Turbo switch               J21

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     NPU disabled (80287)                    JP1              Open

      NPU enabled (80287)                     JP1             Closed

     Monitor type select color               JP3           pins 1 & 2
                                                              closed

      Monitor type select monochrome          JP3           pins 2 & 3
                                                              closed

     CMOS memory normal operation            JP31             Open

      CMOS memory clear                       JP31            Closed

                         DRAM CONFIGURATION

     Size        Bank 0       Parity 0       Bank 1       Parity 1

     1MB       (36) 41256     (3) 41256       NONE       (3) 41256

     2MB       (36) 41256     (3) 41256    (36) 41256    (3) 41256

     4MB       (36) 44256     (3) 41256       NONE       (3) 41256

     8MB       (36) 44256     (3) 41256    (36) 44256    (3) 41256

    NUMERIC COPROCESSOR CONFIGURATION (80387)

     Setting           JP11             JP12

  Not installed        Open             Open

    Installed         Closed           Closed

