SPRING CIRCLE COMPUTER, INC.

80386SX


Processor         80386SX
Processor Speed   25MHz
Chip Set          Intel
Max. Onboard DRAM 16MB
Cache             None
BIOS              AMI
Dimensions        220mm x 236mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            J17       Turbo switch               J24

  Speaker                     J21       Turbo LED                  J25

  Power LED & keylock         J22       Reset switch               J26

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

  »   CMOS memory normal operation            J16              Open

      CMOS memory clear                       J16             Closed

  »   Battery select internal                 J17           pins 2 & 3
                                                              closed

      Battery select external                 J17             Closed

  »   Monitor type select color               J18             Closed

      Monitor type select monochrome          J18              Open

  »   Floppy drive current select low         J19              Open
      (12mA)

      Floppy drive current select high        J19             Closed
      (24mA)

  »   Pipeline mode disabled                  J20              Open

      Pipeline mode enabled                   J20             Closed

  »   NPU disabled                            J23           pins 2 & 3
                                                              closed

      NPU enabled                             J23           pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

  Size     Bank 0      Parity     Bank 1      Parity     Bank 2   Bank 3
                       (P-0)                  (P-1)

  512KB      (4)         (2)       NONE        NONE      NONE      NONE
            44256      41256

  512KB     NONE        NONE       NONE        NONE       (2)      NONE
                                                         256K x
                                                           9

   1MB       (4)         (2)        (4)         (2)      NONE      NONE
            44256      41256       44256      41256

   1MB      NONE        NONE       NONE        NONE       (2)       (2)
                                                         256K x    256K x
                                                           9         9

   2MB       (4)         (2)       NONE        NONE      NONE      NONE
           441000      411000

   2MB      NONE        NONE       NONE        NONE      (2) 1M    NONE
                                                          x 9

   4MB       (4)         (2)        (4)         (2)      NONE      NONE
           441000      411000     441000      411000

   4MB      NONE        NONE       NONE        NONE      (2) 1M    (2) 1M
                                                          x 9       x 9

   8MB      NONE        NONE       NONE        NONE      (2) 4M    NONE
                                                          x 9

  16MB      NONE        NONE       NONE        NONE      (2) 4M    (2) 4M
                                                          x 9       x 9